SYSTEM DESCRIPTION DOCUMENT
Saturday, November 21, 2009
Prepared For:
SYST798
Prepared By:
Pierre Cannon
Sumon Nandy
Amy Nandy
Saturday, November 21, 2009
Table of Contents
1
2
3
4
5
6
7
Originating Requirements ......................................................................................................................... 1
Design Constraints .................................................................................................................................. 13
Performance Requirements ..................................................................................................................... 16
Functional Behavior Models ................................................................................................................... 22
Item Dictionary ....................................................................................................................................... 56
Components ............................................................................................................................................ 62
Interfaces ................................................................................................................................................. 70
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Saturday, November 21, 2009
List of Figures
1 Operate OTEC System Enhanced FFBD ................................................................................................ 25
2 Operate OTEC System FFBD ................................................................................................................. 25
3 Operate OTEC System N2 Diagram ....................................................................................................... 26
4 Operate OTEC System IDEF0 Diagram ................................................................................................. 27
5 Control OTEC System Enhanced FFBD ................................................................................................ 29
6 Control OTEC System FFBD ................................................................................................................. 29
7 Control OTEC System N2 Diagram ....................................................................................................... 30
8 Control OTEC System IDEF0 Diagram ................................................................................................. 31
9 Generate Power Enhanced FFBD ........................................................................................................... 34
10 Generate Power FFBD .......................................................................................................................... 34
11 Generate Power N2 Diagram ................................................................................................................ 35
12 Generate Power IDEF0 Diagram .......................................................................................................... 36
13 Monitor Health Enhanced FFBD .......................................................................................................... 38
14 Monitor Health FFBD ........................................................................................................................... 38
15 Monitor Health N2 Diagram ................................................................................................................. 39
16 Monitor Health IDEF0 Diagram ........................................................................................................... 40
17 OTEC System Subcomponent Connectivity ......................................................................................... 63
18 Central Computer Subcomponent Connectivity ................................................................................... 64
— ii —
Saturday, November 21, 2009
List of Tables
"Body of List of Tables"
— iii —
Saturday, November 21, 2009
1 Originating Requirements
C.1 Electricity Cost
Requirement Statement:
The OTEC system shall provide electricity at a competitive price point.
Refined By Subordinate Requirements:
Quality Efficiency
Basis Of:
Function: 0 Operate OTEC System
C.2 Time to Market
Requirement Statement:
The OTEC system shall minimize the time to market.
Refined By Subordinate Requirements:
Q.4 Commercial Components
Basis Of:
Function: 0 Operate OTEC System
C.3 Renewable
Requirement Statement:
The OTEC system shall have the ability to replace currently existing non-renewable energy sources
for the region.
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Subordinate Requirements:
Recycled Power
Basis Of:
Function: 0 Operate OTEC System
C.4 Adaptable
Requirement Statement:
The OTEC system shall be adaptable, enabling the possibility of supporting future markets, such as
clean water or clean fuels.
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refines Higher-Level Requirement:
Capital Cost
Refined By Subordinate Requirements:
Modularity
Basis Of:
Function: 0 Operate OTEC System
—1—
Saturday, November 21, 2009
1 Originating Requirements
C.5 Scalable
Requirement Statement:
The OTEC system shall be scalable to increase capacity if demands increase.
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Subordinate Requirements:
Modularity
Basis Of:
Function: 0 Operate OTEC System
C.6 Environment
Requirement Statement:
The OTEC system shall have little to no environmental impact.
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Subordinate Requirements:
Recycled Power
Used Water
Basis Of:
Function: 0 Operate OTEC System
C.7 Energy Capacity
Requirement Statement:
The OTEC system shall have the capacity to meet the demands of the local region.
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Subordinate Requirements:
Modularity
Basis Of:
Function: 0 Operate OTEC System
C.8 Availability
Requirement Statement:
The OTEC system shall have high availability.
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Subordinate Requirements:
Redundancies
Power Cable
Basis Of:
—2—
Saturday, November 21, 2009
1 Originating Requirements
Function: 0 Operate OTEC System
C.9 Efficiency
Requirement Statement:
The OTEC system shall be designed to provide the highest efficiency available for the chosen
cycle.
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Subordinate Requirements:
Quality Efficiency
Basis Of:
Function: 0 Operate OTEC System
C.10 Lifetime
Requirement Statement:
The OTEC system shall be designed with a lifetime of at least 40 years.
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Subordinate Requirements:
Component Lifetime
Basis Of:
Function: 0 Operate OTEC System
C.11 Job Creation
Requirement Statement:
The OTEC system shall create jobs in the local region.
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Subordinate Requirements:
Human Factors
Basis Of:
Function: 0 Operate OTEC System
C.12 O&M Costs
Requirement Statement:
The OTEC system shall be designed to minimize operations and maintenance costs.
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Subordinate Requirements:
Component Lifetime
Supportability
—3—
Saturday, November 21, 2009
1 Originating Requirements
Basis Of:
Function: 0 Operate OTEC System
C.13 Capital Cost
Requirement Statement:
The OTEC system shall be designed to minimize the capital cost.
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Subordinate Requirements:
Adaptable
Basis Of:
Function: 0 Operate OTEC System
N.1 Command
Requirement Statement:
Command: A command station on the OTEC platform shall be integrated to allow for an on-site
crew to monitor the health and safety of the various subsystems the compromise the OTEC plant to
enable immediate corrective action to be taken in the event of an emergency. Context? A sixperson crew plus a crew chief is anticipated for around-the-clock monitoring and safety functions
on the OTEC plant
Reference Paragraph Number & Title:
Non-Functional Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Subordinate Requirements:
Emergency Shutoff
Contol subsystem
Computer
Processing
Error Monitoring
Health Monitoring
Corrective Action
Basis Of:
Function: 0 Operate OTEC System
Function: 1 Control OTEC System
Specifies:
Component: 1 Central Computer
N.2 Communication
Requirement Statement:
—4—
Saturday, November 21, 2009
1 Originating Requirements
Communication: The command station shall be equipped with VHF radios for communicating with
the Coast Guard and other ship traffic that might be in the area. In addition, either satellite phones
will provide an all-weather telephone service. Broadband Internet service will also be provided for
data communications with Power Holding Company of Nigeria.
Reference Paragraph Number & Title:
Non-Functional Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Subordinate Requirements:
Emergency Shutoff
Contol subsystem
Computer
Processing
Basis Of:
Function: 0 Operate OTEC System
Function: 1 Control OTEC System
N.3 Monitoring and Control
Requirement Statement:
Monitoring and Control: All major equipment shall provide appropriate status information to the
command center to enable effective system status monitoring and enable corrective actions to be
taken by crew in the control center.
Reference Paragraph Number & Title:
Non-Functional Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Subordinate Requirements:
Tachometer rating
Tachometer status
Thermocouple rating
Voltage Meters
Emergency Shutoff
Contol subsystem
Computer
Processing
Error Monitoring
Health Monitoring
Corrective Action
Basis Of:
Function: 0 Operate OTEC System
Function: 1 Control OTEC System
Function: 3 Monitor Health
Specifies:
Component: 1 Central Computer
—5—
Saturday, November 21, 2009
1 Originating Requirements
N.4 System Lifetime
Requirement Statement:
The OTEC plant shall be designed to operate over a forty-year (40) period with appropriate system,
subsystem and component level maintenance performed over the life of the system.
Reference Paragraph Number & Title:
Non-Functional Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Basis Of:
Function: 0 Operate OTEC System
Function: 2 Generate Power
Specifies:
Component:
Component:
Component:
Component:
2
7
8
9
Cold Water Pipe
Hot Water Pipe
Turbine
Water Pump
N.5 System Availability
Requirement Statement:
The OTEC system shall have an availability of 95%.
Reference Paragraph Number & Title:
Non-Functional Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Basis Of:
Function: 0 Operate OTEC System
N.6 Survivability
Requirement Statement:
The OTEC plant shall be designed and constructed to “survive” a 100-year storm that Lagos could
experience. Context? Because of the location and weather patterns, Nigeria doesn’t experience
hurricane level storms or any earthquakes. A typical 100-year storm in the area is would result in
land flooding and would have no impact on the OTEC system. The term “survive” implies that the
plant will not be operational during a major tsunami but the system should be capable of being reactivated within four weeks of the storm’s conclusion following necessary repairs.
Reference Paragraph Number & Title:
Non-Functional Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Basis Of:
Function: 0 Operate OTEC System
Function: 2 Generate Power
—6—
Saturday, November 21, 2009
1 Originating Requirements
Specifies:
Component: 5 Fluid Pump
Component: 8 Turbine
Component: 9 Water Pump
N.7 Construction
Requirement Statement:
The OTEC system shall be designed and constructed to facilitate installation by appropriate
commercially available ships, dry docks, tugs, and similar marine construction craft. Context ? A
shore-side facility for staging and preparing the OTEC systems for installation is anticipated.
Reference Paragraph Number & Title:
Non-Functional Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Subordinate Requirements:
Tachometer rating
Thermocouple rating
Basis Of:
Function: 0 Operate OTEC System
Function: 2 Generate Power
Specifies:
Component: 5 Fluid Pump
Component: 8 Turbine
Component: 9 Water Pump
N.8 Maintenance of Subsystems
Requirement Statement:
Design and construction of the OTEC plant shall facilitate regularly scheduled maintenance of
subsystems and components as recommended by the various manufactures.
Reference Paragraph Number & Title:
Non-Functional Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Basis Of:
Function: 0 Operate OTEC System
Function: 3 Monitor Health
Specifies:
Component: 5 Fluid Pump
Component: 8 Turbine
Component: 9 Water Pump
N.9 MTTR
Requirement Statement:
—7—
Saturday, November 21, 2009
1 Originating Requirements
Key component replacement and regularly maintenance will be designed such that the mean time
to repair (MTTR) shall support the capability factor target of 95%.
Reference Paragraph Number & Title:
Non-Functional Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Basis Of:
Function: 0 Operate OTEC System
Function: 3 Monitor Health
Specifies:
Component: 5 Fluid Pump
Component: 8 Turbine
Component: 9 Water Pump
N.10 Sea Safety
Requirement Statement:
The OTEC plant shall be equipped with appropriate navigation warning signs, rotating beacon
lights, radar reflectors, and any other equipment required by stationary objects at sea consistent
with Nigerian Coast Guard regulations.
Reference Paragraph Number & Title:
Non-Functional Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Basis Of:
Function: 0 Operate OTEC System
N.11 Environmental Safety
Requirement Statement:
The OTEC plant shall be equipped with suitable fire fighting equipment as well as hazardous
material (HAZMAT) handling equipment in case of emergencies with the ammonia-based power
system and associated storage and handling equipment.
Reference Paragraph Number & Title:
Non-Functional Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Subordinate Requirements:
Emergency Shutoff
Basis Of:
Function: 0 Operate OTEC System
Function: 1 Control OTEC System
Function: 3 Monitor Health
—8—
Saturday, November 21, 2009
1 Originating Requirements
Q.1 Modularity
Requirement Statement:
The OTEC system shall incorporate a modular design for the power producing systems.
Reference Paragraph Number & Title:
Quality Characteristic Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refines Higher-Level Requirement:
Adaptable
Scalable
Energy Capacity
Basis Of:
Function: 0 Operate OTEC System
Q.2 Component Lifetime
Requirement Statement:
The OTEC system shall use subsystem components that have at least a 40 year lifetime, where
possible.
Reference Paragraph Number & Title:
Quality Characteristic Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refines Higher-Level Requirement:
Lifetime
O&M Costs
Basis Of:
Function: 0 Operate OTEC System
Function: 2 Generate Power
Specifies:
Component:
Component:
Component:
Component:
2
5
7
9
Cold Water Pipe
Fluid Pump
Hot Water Pipe
Water Pump
Q.3 Quality Efficiency
Requirement Statement:
The OTEC system shall use subsystem components that have high efficiencies, where possible.
Reference Paragraph Number & Title:
Quality Characteristic Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
—9—
Saturday, November 21, 2009
1 Originating Requirements
Refines Higher-Level Requirement:
Electricity Cost
Efficiency
Basis Of:
Function: 0 Operate OTEC System
Function: 2 Generate Power
Function: 3 Monitor Health
Q.4 Commercial Components
Requirement Statement:
The OTEC system design shall incorporate commercial components where possible.
Reference Paragraph Number & Title:
Quality Characteristic Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refines Higher-Level Requirement:
Time to Market
Basis Of:
Function: 0 Operate OTEC System
Function: 2 Generate Power
Function: 3 Monitor Health
Q.5 Recycled Power
Requirement Statement:
The OTEC system shall use the power generated to power the subsystems.
Reference Paragraph Number & Title:
Quality Characteristic Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refines Higher-Level Requirement:
Renewable
Environment
Basis Of:
Function: 0 Operate OTEC System
Function: 2 Generate Power
Q.6 Supportability
Requirement Statement:
The OTEC system shall be designed to provide ease of supportability.
Reference Paragraph Number & Title:
Quality Characteristic Requirements
Source Document(s):
— 10 —
Saturday, November 21, 2009
1 Originating Requirements
Requirements, Codes, Standards, and Regulations
Refines Higher-Level Requirement:
O&M Costs
Basis Of:
Function: 0 Operate OTEC System
Function: 2 Generate Power
Function: 3 Monitor Health
Q.7 Human Factors
Requirement Statement:
The OTEC system shall use human factors engineering where humans interact with the system.
Reference Paragraph Number & Title:
Quality Characteristic Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refines Higher-Level Requirement:
Job Creation
Basis Of:
Function: 0 Operate OTEC System
Function: 1 Control OTEC System
Q.8 Redundancies
Requirement Statement:
The OTEC System shall be designed with redundancies in the control system.
Reference Paragraph Number & Title:
Quality Characteristic Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refines Higher-Level Requirement:
Availability
Basis Of:
Function: 0 Operate OTEC System
Function: 1 Control OTEC System
Q.9 Power Cable
Requirement Statement:
The OTEC system shall include more than one power connection to the shore distribution center.
Reference Paragraph Number & Title:
Quality Characteristic Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
— 11 —
Saturday, November 21, 2009
1 Originating Requirements
Refines Higher-Level Requirement:
Availability
Basis Of:
Function: 0 Operate OTEC System
Function: 2 Generate Power
Q.10 Used Water
Requirement Statement:
The OTEC system shall release used water at a depth of equal temperature.
Reference Paragraph Number & Title:
Quality Characteristic Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refines Higher-Level Requirement:
Environment
Basis Of:
Function: 0 Operate OTEC System
Function: 2 Generate Power
Specifies:
Component:
Component:
Component:
Component:
Component:
2
3
4
7
9
Cold Water Pipe
Condenser
Evaporator
Hot Water Pipe
Water Pump
— 12 —
Saturday, November 21, 2009
2 Design Constraints
C.1 Electricity Cost
Design Constraint Statement:
The OTEC system shall provide electricity at a competitive price point.
Refined By Lower-Level Requirements:
Q.3 - Quality Efficiency
C.2 Time to Market
Design Constraint Statement:
The OTEC system shall minimize the time to market.
Refined By Lower-Level Requirements:
Q.4 - Commercial Components
C.3 Renewable
Design Constraint Statement:
The OTEC system shall have the ability to replace currently existing non-renewable energy sources
for the region.
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Lower-Level Requirements:
Q.5 - Recycled Power
C.4 Adaptable
Design Constraint Statement:
The OTEC system shall be adaptable, enabling the possibility of supporting future markets, such as
clean water or clean fuels.
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refines Higher-Level Requirement:
C.13 - Capital Cost
Refined By Lower-Level Requirements:
Q.1 - Modularity
C.5 Scalable
Design Constraint Statement:
The OTEC system shall be scalable to increase capacity if demands increase.
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Lower-Level Requirements:
Q.1 - Modularity
— 13 —
Saturday, November 21, 2009
2 Design Constraints
C.6 Environment
Design Constraint Statement:
The OTEC system shall have little to no environmental impact.
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Lower-Level Requirements:
Q.5 - Recycled Power
Q.10 - Used Water
C.7 Energy Capacity
Design Constraint Statement:
The OTEC system shall have the capacity to meet the demands of the local region.
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Lower-Level Requirements:
Q.1 - Modularity
C.8 Availability
Design Constraint Statement:
The OTEC system shall have high availability.
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Lower-Level Requirements:
Q.8 - Redundancies
Q.9 - Power Cable
C.9 Efficiency
Design Constraint Statement:
The OTEC system shall be designed to provide the highest efficiency available for the chosen
cycle.
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Lower-Level Requirements:
Q.3 - Quality Efficiency
C.10 Lifetime
Design Constraint Statement:
The OTEC system shall be designed with a lifetime of at least 40 years.
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Lower-Level Requirements:
— 14 —
Saturday, November 21, 2009
2 Design Constraints
Q.2 - Component Lifetime
C.11 Job Creation
Design Constraint Statement:
The OTEC system shall create jobs in the local region.
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Lower-Level Requirements:
Q.7 - Human Factors
C.12 O&M Costs
Design Constraint Statement:
The OTEC system shall be designed to minimize operations and maintenance costs.
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Lower-Level Requirements:
Q.2 - Component Lifetime
Q.6 - Supportability
C.13 Capital Cost
Design Constraint Statement:
The OTEC system shall be designed to minimize the capital cost.
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refined By Lower-Level Requirements:
C.4 - Adaptable
— 15 —
Saturday, November 21, 2009
3 Performance Requirements
S.2 Heat Exchangers
Performance Requirement Statement:
Adequately sized heat exchangers (Condenser and Evaporator) shall be selected for the system.
Document Paragraph Title: Subsystem Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Specifies:
Component: 3 - Condenser
Component: 4 - Evaporator
S.3 Turbine
Performance Requirement Statement:
A Turbine capable of spinning with the appropriate velocity and torque shall be selected for the
system.
Document Paragraph Title: Subsystem Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Specifies:
Component: 8 - Turbine
S.4 Generator
Performance Requirement Statement:
A generator capable of producing 150MW shall be selected for the system.
Document Paragraph Title: Subsystem Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refines Higher-Level Requirement:
F.3 - Power
F.8 - Generator Connection
Specifies:
Component: 6 - Generator
S.5 Component Selection
Performance Requirement Statement:
All components selected for the OTEC system shall be rated to handle the corrosive ocean salt
water environment.
Document Paragraph Title: Subsystem Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
— 16 —
Saturday, November 21, 2009
3 Performance Requirements
Refines Higher-Level Requirement:
F.10 - Distribution Cable
Specifies:
Component:
Component:
Component:
Component:
Component:
Component:
Component:
Component:
Component:
3 3.1
4 4.1
5.1
6 6.1
8.1
9.1
Condenser
- ThermostatC
Evaporator
- ThermostatE
- Pressure Sensor
Generator
- Power Sensor
- Tachometer
- Pump Power Sensor
S.6 Voltage Regulators
Performance Requirement Statement:
The OTEC system shall use inline voltage regulators capable of supporting the distribution
requirements.
Document Paragraph Title: Subsystem Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refines Higher-Level Requirement:
F.5 - Power Factor
F.6 - Distribution Voltage
F.9 - Distribution regulations
F.10 - Distribution Cable
F.11 - Transmission Protection
Specifies:
Component: 6 - Generator
S.7 Tachometer rating
Performance Requirement Statement:
A tachometer capable of accurately tracking turbine speed +/- 20rpm shall be selected to monitor
the turbine.
Document Paragraph Title: Subsystem Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refines Higher-Level Requirement:
N.3 - Monitoring and Control
N.7 - Construction
Specifies:
Component: 8.1 - Tachometer
— 17 —
Saturday, November 21, 2009
3 Performance Requirements
S.8 Tachometer status
Performance Requirement Statement:
The tachometer shall be able to report status back to the central computer in the control center.
Document Paragraph Title: Subsystem Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refines Higher-Level Requirement:
N.3 - Monitoring and Control
Specifies:
Component: 8.1 - Tachometer
S.9 Thermocouple rating
Performance Requirement Statement:
Thermocouples capable of achieving +/- 0.1 degree C accuracy shall be selected to measure
temperatures at the heat exchangers.
Document Paragraph Title: Subsystem Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refines Higher-Level Requirement:
N.3 - Monitoring and Control
N.7 - Construction
Specifies:
Component: 3.1 - ThermostatC
Component: 4.1 - ThermostatE
S.10 Voltage Meters
Performance Requirement Statement:
Precision High Voltage Meters shall be selected to measure the generators output voltage, and
power to the water and working fluid pumps.
Document Paragraph Title: Subsystem Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refines Higher-Level Requirement:
N.3 - Monitoring and Control
Specifies:
Component: 6.1 - Power Sensor
Component: 9.1 - Pump Power Sensor
— 18 —
Saturday, November 21, 2009
3 Performance Requirements
S.11 Emergency Shutoff
Performance Requirement Statement:
The OTEC system shall be equipped with an emergency shutoff switch to stop all systems in the
event of an emergency.
Document Paragraph Title: Subsystem Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refines Higher-Level Requirement:
N.1 - Command
N.2 - Communication
N.3 - Monitoring and Control
N.11 - Environmental Safety
S.12 Contol subsystem
Performance Requirement Statement:
The Monitoring system shall provide status to the Control subsystem
Document Paragraph Title: Subsystem Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refines Higher-Level Requirement:
N.1 - Command
N.2 - Communication
N.3 - Monitoring and Control
S.13 Computer
Performance Requirement Statement:
The control system shall contain a processing computer capable of processing data from the
Monitoring subsystem
Document Paragraph Title: Subsystem Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refines Higher-Level Requirement:
N.1 - Command
N.2 - Communication
N.3 - Monitoring and Control
Specifies:
Component: 1 - Central Computer
S.14 Processing
Performance Requirement Statement:
— 19 —
Saturday, November 21, 2009
3 Performance Requirements
The status of the components shall be processed to determine if the values are good or if
adjustment need to be made to enhance performance.
Document Paragraph Title: Subsystem Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refines Higher-Level Requirement:
N.1 - Command
N.2 - Communication
N.3 - Monitoring and Control
Specifies:
Component: 1 - Central Computer
S.15 Error Monitoring
Performance Requirement Statement:
If the control system determines there is a major error in the system, the central computer shall stop
and shutdown the OTEC system.
Document Paragraph Title: Subsystem Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refines Higher-Level Requirement:
N.1 - Command
N.3 - Monitoring and Control
Specifies:
Component: 1 - Central Computer
S.16 Health Monitoring
Performance Requirement Statement:
If the control system determines the values are good, then the computer shall have the system to
continue running.
Document Paragraph Title: Subsystem Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refines Higher-Level Requirement:
N.1 - Command
N.3 - Monitoring and Control
Specifies:
Component: 1 - Central Computer
S.17 Corrective Action
Performance Requirement Statement:
— 20 —
Saturday, November 21, 2009
3 Performance Requirements
If the control system determines the adjustments need to be made, then the computer shall direct
the system to raise or lower the power to the pumps until the optimum conditions are met.
Document Paragraph Title: Subsystem Requirements
Source Document(s):
Requirements, Codes, Standards, and Regulations
Refines Higher-Level Requirement:
N.1 - Command
N.3 - Monitoring and Control
Specifies:
Component: 1 - Central Computer
— 21 —
Saturday, November 21, 2009
4 Functional Behavior Models
Part I - Function List
0 Operate OTEC System
1 Control OTEC System
2 Generate Power
3 Monitor Health
11 Start OTEC System
12 Run OTEC CPU
13 Control System
14 Stop OTEC System
21 Pump Working Fluids
22 Pump Water
23 Evaporate Working Fluid
24 Drive Turbine
25 Spin Generator
26 Condense Working Fluid
31 Monitor Turbine Speed
32 Monitor Generator Power
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
35 Monitor Fluid Pressure
36 Monitor Pump Power
Part II - Behavioral Models
0 Operate OTEC System
Description:
Top Level fuction or view of the OTEC System
Allocated To:
1 Central Computer
2 Cold Water Pipe
3 Condenser
4 Evaporator
5 Fluid Pump
6 Generator
7 Hot Water Pipe
8 Turbine
9 Water Pump
COOL OCEAN WATER
DEEP COLD OCEAN WATER
WARM OCEAN WATER
WARM OCEAN SURFACE WATER
Based On:
— 22 —
Saturday, November 21, 2009
4 Functional Behavior Models
C.1 - Electricity Cost
C.2 - Time to Market
C.3 - Renewable
C.4 - Adaptable
C.5 - Scalable
C.6 - Environment
C.7 - Energy Capacity
C.8 - Availability
C.9 - Efficiency
C.10 - Lifetime
C.11 - Job Creation
C.12 - O&M Costs
C.13 - Capital Cost
F.1 - OTEC Process
F.2 - Working Fluid
F.3 - Power
F.4 - Transmission Voltage
F.5 - Power Factor
F.6 - Distribution Voltage
F.7 - Frequency
F.8 - Generator Connection
F.9 - Distribution regulations
F.10 - Distribution Cable
F.11 - Transmission Protection
F.12 - Distance from shore
N.1 - Command
N.2 - Communication
N.3 - Monitoring and Control
N.4 - System Lifetime
N.5 - System Availability
N.6 - Survivability
N.7 - Construction
N.8 - Maintenance of Subsystems
N.9 - MTTR
N.10 - Sea Safety
N.11 - Environmental Safety
Q.1 - Modularity
Q.2 - Component Lifetime
Q.3 - Quality Efficiency
Q.4 - Commercial Components
Q.5 - Recycled Power
Q.6 - Supportability
Q.7 - Human Factors
Q.8 - Redundancies
Q.9 - Power Cable
Q.10 - Used Water
— 23 —
Saturday, November 21, 2009
4 Functional Behavior Models
Interfacing Items
Authorization
Source / Destination
Triggers Function(s):
0 Operate OTEC System
1 Control OTEC System
11 Start OTEC System
14 Stop OTEC System
Performance Rules
Triggers Function(s):
0 Operate OTEC System
1 Control OTEC System
12 Run OTEC CPU
Power
Output From:
0 Operate OTEC System
2 Generate Power
25 Spin Generator
Regulations
Triggers Function(s):
0 Operate OTEC System
2 Generate Power
21 Pump Working Fluids
22 Pump Water
23 Evaporate Working Fluid
24 Drive Turbine
25 Spin Generator
26 Condense Working Fluid
Standards
Triggers Function(s):
0 Operate OTEC System
1 Control OTEC System
2 Generate Power
3 Monitor Health
13 Control System
25 Spin Generator
26 Condense Working Fluid
31 Monitor Turbine Speed
32 Monitor Generator Power
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
35 Monitor Fluid Pressure
36 Monitor Pump Power
Startup Power
Input To:
0 Operate OTEC System
2 Generate Power
21 Pump Working Fluids
— 24 —
Saturday, November 21, 2009
4 Functional Behavior Models
Interfacing Items
Source / Destination
Status
Output From:
0 Operate OTEC System
3 Monitor Health
31 Monitor Turbine Speed
32 Monitor Generator Power
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
35 Monitor Fluid Pressure
36 Monitor Pump Power
Water
Input To:
0 Operate OTEC System
Output From:
0 Operate OTEC System
Performanc
e Rules
Startup
Standards
Power
Regulations
Update
Authorizatio
Deep Cold
n Water
Hot
Surface ...
1
Ref.
2
Control OTEC
System
3
Generate Power
System
Data
Controls
Cool Water
Warm
Water
Ref.
Monitor Health
Status
Power
Date:
Saturday, November 21, 2009
Author:
Number:
Name:
(University) Operate OTEC Sys tem
0
University User
Figure 1 Operate OTEC System Enhanced FFBD
1
Ref.
2
Control OTEC
System
3
Generate Power
Monitor Health
Ref.
Date:
Saturday, November 21, 2009
Author:
Number:
Name:
(University) Operate OTEC System
0
Figure 2 Operate OTEC System FFBD
— 25 —
University User
Saturday, November 21, 2009
4 Functional Behavior Models
Authorization
Performanc...
Standards
Update
Deep Cold ...
Hot Surfac...
Regulations
Standards
Standards
1
System
Controls
Control OTEC
System
2
Cool Water
Power
Warm Water
Data
Generate Power
3
Monitor Health
Status
Date:
Saturday, November 21, 2009
Author:
Number:
Name:
(University) Operate OTEC System
0
University User
Figure 3 Operate OTEC System N2 Diagram
— 26 —
Saturday, November 21, 2009
4 Functional Behavior Models
Authorization
Performance Rules
Regulations
Standards
1
Update
Control OTEC
System
System Controls
2
Startup Power
Hot Surface Water
Deep Cold Water
Generate Power
Warm Water
Cool Water
Power
Data
3
Status
Monitor Health
Cold Water Pipe
Central
Condenser
Computer
COOL OCEAN WATER
DEEP COLD OCEAN WATER
Evaporator
Fluid Pump
Generator
Hot Water Pipe
Turbine
WARM OCEAN WATER
WARM OCEAN SURFACE WATER
Water Pump
Date:
Saturday, November 21, 2009
Author:
Number:
Name:
(University) Operate OTEC System
0
Figure 4 Operate OTEC System IDEF0 Diagram
— 27 —
University User
Saturday, November 21, 2009
4 Functional Behavior Models
1 Control OTEC System
Allocated To:
1 Central Computer
Based On:
N.1 - Command
N.2 - Communication
N.3 - Monitoring and Control
N.11 - Environmental Safety
Q.7 - Human Factors
Q.8 - Redundancies
S.11 - Emergency Shutoff
S.13 - Computer
S.14 - Processing
S.15 - Error Monitoring
S.16 - Health Monitoring
S.17 - Corrective Action
Interfacing Items
Authorization
Source / Destination
Triggers Function(s):
0 Operate OTEC System
1 Control OTEC System
11 Start OTEC System
14 Stop OTEC System
Performance Rules
Triggers Function(s):
0 Operate OTEC System
1 Control OTEC System
12 Run OTEC CPU
Standards
Triggers Function(s):
0 Operate OTEC System
1 Control OTEC System
2 Generate Power
3 Monitor Health
13 Control System
25 Spin Generator
26 Condense Working Fluid
31 Monitor Turbine Speed
32 Monitor Generator Power
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
35 Monitor Fluid Pressure
36 Monitor Pump Power
System Controls
Input To:
2 Generate Power
— 28 —
Saturday, November 21, 2009
4 Functional Behavior Models
Interfacing Items
Source / Destination
21 Pump Working Fluids
22 Pump Water
Output From:
1 Control OTEC System
13 Control System
14 Stop OTEC System
Update
Input To:
1 Control OTEC System
12 Run OTEC CPU
Authorizatio
n
Update
11
Ref.
Performanc
Standards
e Rules
12
Start OTEC
System
13
Run OTEC CPU
Start
14
2
Stop OTEC
System
Control System
Generate Power
System
Controls
Controls
Date:
Saturday, November 21, 2009
Author:
Number:
Name:
(University) Control OTEC System
1
University User
Figure 5 Control OTEC System Enhanced FFBD
11
Ref.
12
Start OTEC
System
Run OTEC CPU
13
14
2
Stop OTEC
System
Control System
Generate Power
Date:
Saturday, November 21, 2009
Author:
Number:
Name:
(University) Control OTEC System
1
Figure 6 Control OTEC System FFBD
— 29 —
University User
Saturday, November 21, 2009
4 Functional Behavior Models
Performance
Rules
Update
Authorization
Standards
Authorization
11
Start OTEC
System
Start
12
Controls
Run OTEC CPU
Controls
13
System
Controls
Control System
14
Stop OTEC
System
System
Controls
Date:
Saturday, November 21, 2009
Author:
Number:
Name:
(University) Control OTEC System
1
University User
Figure 7 Control OTEC System N2 Diagram
— 30 —
Saturday, November 21, 2009
4 Functional Behavior Models
Performance Rules
Standards
Authorization
11
Start OTEC
System
Start
12
Update
Run OTEC CPU
Controls
13
System Controls
Control System
14
Stop OTEC
System
Central Computer
Date:
Saturday, November 21, 2009
Author:
Number:
Name:
(University) Control OTEC System
1
Figure 8 Control OTEC System IDEF0 Diagram
2 Generate Power
Allocated To:
2 Cold Water Pipe
3 Condenser
4 Evaporator
5 Fluid Pump
6 Generator
7 Hot Water Pipe
8 Turbine
9 Water Pump
COOL OCEAN WATER
DEEP COLD OCEAN WATER
— 31 —
University User
Saturday, November 21, 2009
4 Functional Behavior Models
WARM OCEAN WATER
WARM OCEAN SURFACE WATER
Based On:
F.1 - OTEC Process
F.2 - Working Fluid
F.3 - Power
F.4 - Transmission Voltage
F.5 - Power Factor
F.6 - Distribution Voltage
F.7 - Frequency
F.8 - Generator Connection
F.9 - Distribution regulations
F.10 - Distribution Cable
F.11 - Transmission Protection
F.12 - Distance from shore
N.4 - System Lifetime
N.6 - Survivability
N.7 - Construction
Q.2 - Component Lifetime
Q.3 - Quality Efficiency
Q.4 - Commercial Components
Q.5 - Recycled Power
Q.6 - Supportability
Q.9 - Power Cable
Q.10 - Used Water
S.1 - Pumps
S.2 - Heat Exchangers
S.3 - Turbine
S.4 - Generator
S.5 - Component Selection
S.6 - Voltage Regulators
Interfacing Items
Cool Water
Source / Destination
Output From:
2 Generate Power
26 Condense Working Fluid
Data
Input To:
3 Monitor Health
Output From:
2 Generate Power
Deep Cold Water
Input To:
2 Generate Power
22 Pump Water
Hot Surface Water
Input To:
2 Generate Power
— 32 —
Saturday, November 21, 2009
4 Functional Behavior Models
Interfacing Items
Source / Destination
22 Pump Water
Power
Output From:
0 Operate OTEC System
2 Generate Power
25 Spin Generator
Regulations
Triggers Function(s):
0 Operate OTEC System
2 Generate Power
21 Pump Working Fluids
22 Pump Water
23 Evaporate Working Fluid
24 Drive Turbine
25 Spin Generator
26 Condense Working Fluid
Standards
Triggers Function(s):
0 Operate OTEC System
1 Control OTEC System
2 Generate Power
3 Monitor Health
13 Control System
25 Spin Generator
26 Condense Working Fluid
31 Monitor Turbine Speed
32 Monitor Generator Power
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
35 Monitor Fluid Pressure
36 Monitor Pump Power
Startup Power
Input To:
0 Operate OTEC System
2 Generate Power
21 Pump Working Fluids
System Controls
Input To:
2 Generate Power
21 Pump Working Fluids
22 Pump Water
Output From:
1 Control OTEC System
13 Control System
14 Stop OTEC System
— 33 —
Saturday, November 21, 2009
4 Functional Behavior Models
Interfacing Items
Source / Destination
Warm Water
Output From:
2 Generate Power
23 Evaporate Working Fluid
Regulations
Startup
Power
Liquid
Ammonia
1
System
Controls
Deep Cold
Net Power
Water
21
Control OTEC
System
22
Pump Working
Fluids
Pump
Power
Hot
Surface ...
Standards
23
Evaporate
Working Fluid
Pump Water
Fluid
Hot Water
Pressure
24
Temperatur
Cold Water
e
25
Drive Turbine
Steam
Mechanical
Ammonia
Energy
Warm
Water
26
Condense
Working Fluid
Spin Generator
Ammonia
Power
Steam
3
Output
Power
Monitor Health
Cool Water
Speed
Date:
Saturday, November 21, 2009
Author:
Number:
Name:
(University) Generate Power
2
University User
Figure 9 Generate Power Enhanced FFBD
1
21
Control OTEC
System
Pump Working
Fluids
22
23
Pump Water
24
Evaporate
Working Fluid
25
Drive Turbine
26
Spin Generator
Monitor Health
Date:
Saturday, November 21, 2009
Author:
Number:
Name:
(University) Generate Power
Figure 10 Generate Power FFBD
— 34 —
3
Condense
Working Fluid
2
University User
Saturday, November 21, 2009
4 Functional Behavior Models
Regulations
Startup
Power
System Con...
Deep Cold ...
Hot Surfac...
Regulations
System Con...
Regulations
Regulations
Standards
Regulations
Regulations
Standards
21
Fluid Pressure
Pump Power
Pump Working
Fluids
22
Hot Water
Pump Water
Cold Water
Pump Power
23
Fluid Pressure
Temperature
Warm Water
Steam
Ammonia
Evaporate
Working Fluid
24
Mechanical
Energy
Drive Turbine
Ammonia
Steam
Speed
25
Net Power
Net Power
Output Power
Power
Spin Generator
26
Liquid
Ammonia
Liquid
Ammonia
Condense
Working Fluid
Cool Water
Temperature
Date:
Saturday, November 21, 2009
Author:
Number:
Name:
(University) Generate Power
2
Figure 11 Generate Power N2 Diagram
— 35 —
University User
Saturday, November 21, 2009
4 Functional Behavior Models
Regulations
Standards
Startup Power
System Controls
21
Pump Power
Pump Working
Fluids
Data
Fluid Pressure
22
Deep Cold Water
Hot Surface Water
Pump Power
Pump Water
Cold Water
Hot Water
23
Evaporate
Working Fluid
Warm Water
Temperature
Fluid Pressure
Steam Ammonia
24
Speed
Drive Turbine
Ammonia Steam
Mechanical Energy
25
Spin Generator
Power
Output Power
Net Power
26
Temperature
Condense
Working Fluid
Fluid Pump
Hot Water Pipe
Water Pump
Cold Water Pipe
WARM OCE...
WARM OCEAN SURFA...
COOL OCE...
DEEP COLD OCE...
Evaporator
Turbine
Generator
Allocated To:
1 Central Computer
Based On:
N.3 - Monitoring and Control
— 36 —
Condenser
Date:
Saturday, November 21, 2009
Author:
Number:
Name:
(University) Generate Power
Figure 12 Generate Power IDEF0 Diagram
3 Monitor Health
Cool Water
Liquid Ammonia
2
University User
Saturday, November 21, 2009
4 Functional Behavior Models
N.8 - Maintenance of Subsystems
N.9 - MTTR
N.11 - Environmental Safety
Q.3 - Quality Efficiency
Q.4 - Commercial Components
Q.6 - Supportability
S.7 - Tachometer rating
S.8 - Tachometer status
S.9 - Thermocouple rating
S.10 - Voltage Meters
S.11 - Emergency Shutoff
S.12 - Contol subsystem
Interfacing Items
Data
Source / Destination
Input To:
3 Monitor Health
Output From:
2 Generate Power
Standards
Triggers Function(s):
0 Operate OTEC System
1 Control OTEC System
2 Generate Power
3 Monitor Health
13 Control System
25 Spin Generator
26 Condense Working Fluid
31 Monitor Turbine Speed
32 Monitor Generator Power
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
35 Monitor Fluid Pressure
36 Monitor Pump Power
Status
Output From:
0 Operate OTEC System
3 Monitor Health
31 Monitor Turbine Speed
32 Monitor Generator Power
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
35 Monitor Fluid Pressure
36 Monitor Pump Power
— 37 —
Saturday, November 21, 2009
4 Functional Behavior Models
Output
Power
2
Generate Power
Fluid
Standards
Pressure
32
Temperatur
e
35
Monitor
Generator Power
34
Monitor
Evaporator
Temperature
Monitor Fluid
Pressure
Pump
Power
Speed
36
31
Monitor Pump
Power
33
Monitor
Condenser
Temperature
Monitor Turbine
Speed
Ref.
Status
Date:
Saturday, November 21, 2009
Author:
Number:
Name:
3
University User
(University) Monitor Health
Figure 13 Monitor Health Enhanced FFBD
2
Generate Power
32
Monitor
Generator Power
35
34
Monitor Fluid
Pressure
36
Monitor
Evaporator
Temperature
Monitor Pump
Power
31
33
Ref.
Date:
Saturday, November 21, 2009
Author:
Number:
Name:
Figure 14 Monitor Health FFBD
— 38 —
Monitor
Condenser
Temperature
Monitor Turbine
Speed
3
University User
(University) Monitor Health
Saturday, November 21, 2009
4 Functional Behavior Models
Output Power
Standards
Fluid Pressure
Standards
Standards
Temperature
Pump Power
Standards
Speed
Standards
Standards
Temperature
32
Monitor
Generator Power
Status
35
Monitor Fluid
Pressure
Status
34
Monitor
Evaporator
Temperature
Status
36
Monitor Pump
Power
Status
31
Monitor Turbine
Speed
Status
33
Monitor
Condenser
Temperature
Date:
Saturday, November 21, 2009
Author:
Number:
Name:
3
Figure 15 Monitor Health N2 Diagram
— 39 —
Status
University User
(University) Monitor Health
Saturday, November 21, 2009
4 Functional Behavior Models
Standards
32
Output Power
Data
Monitor
Generator Power
Status
35
Fluid Pressure
Monitor Fluid
Pressure
34
Temperature
Monitor
Evaporator
Temperature
36
Pump Power
Monitor Pump
Power
31
Speed
Monitor Turbine
Speed
33
Temperature
Power Sensor
Pressure Sensor
ThermostatE
Pump Power Sensor
Monitor
Condenser
Temperature
ThermostatC
Tachometer
Central Computer
Date:
Saturday, November 21, 2009
Author:
Number:
Name:
3
Figure 16 Monitor Health IDEF0 Diagram
11 Start OTEC System
Allocated To:
1 Central Computer
Interfacing Items
Authorization
Source / Destination
Triggers Function(s):
0 Operate OTEC System
1 Control OTEC System
11 Start OTEC System
14 Stop OTEC System
Start
Input To:
— 40 —
University User
(University) Monitor Health
Saturday, November 21, 2009
4 Functional Behavior Models
Interfacing Items
Source / Destination
13 Control System
Output From:
11 Start OTEC System
12 Run OTEC CPU
Allocated To:
1 Central Computer
Interfacing Items
Controls
Source / Destination
Input To:
13 Control System
14 Stop OTEC System
Output From:
12 Run OTEC CPU
Performance Rules
Triggers Function(s):
0 Operate OTEC System
1 Control OTEC System
12 Run OTEC CPU
Update
Input To:
1 Control OTEC System
12 Run OTEC CPU
13 Control System
Allocated To:
1 Central Computer
Interfacing Items
Controls
Source / Destination
Input To:
13 Control System
14 Stop OTEC System
Output From:
12 Run OTEC CPU
Standards
Triggers Function(s):
0 Operate OTEC System
1 Control OTEC System
2 Generate Power
3 Monitor Health
13 Control System
— 41 —
Saturday, November 21, 2009
4 Functional Behavior Models
Interfacing Items
Source / Destination
25
26
31
32
33
34
35
36
Start
Spin Generator
Condense Working Fluid
Monitor Turbine Speed
Monitor Generator Power
Monitor Condenser Temperature
Monitor Evaporator Temperature
Monitor Fluid Pressure
Monitor Pump Power
Input To:
13 Control System
Output From:
11 Start OTEC System
System Controls
Input To:
2 Generate Power
21 Pump Working Fluids
22 Pump Water
Output From:
1 Control OTEC System
13 Control System
14 Stop OTEC System
14 Stop OTEC System
Allocated To:
1 Central Computer
Interfacing Items
Authorization
Source / Destination
Triggers Function(s):
0 Operate OTEC System
1 Control OTEC System
11 Start OTEC System
14 Stop OTEC System
Controls
Input To:
13 Control System
14 Stop OTEC System
Output From:
12 Run OTEC CPU
System Controls
Input To:
2 Generate Power
21 Pump Working Fluids
— 42 —
Saturday, November 21, 2009
4 Functional Behavior Models
Interfacing Items
Source / Destination
22 Pump Water
Output From:
1 Control OTEC System
13 Control System
14 Stop OTEC System
21 Pump Working Fluids
Allocated To:
5 Fluid Pump
Interfacing Items
Fluid Pressure
Source / Destination
Input To:
35 Monitor Fluid Pressure
Output From:
21 Pump Working Fluids
23 Evaporate Working Fluid
Liquid Ammonia
Input To:
21 Pump Working Fluids
23 Evaporate Working Fluid
Output From:
26 Condense Working Fluid
Net Power
Input To:
21 Pump Working Fluids
22 Pump Water
Output From:
25 Spin Generator
Pump Power
Input To:
36 Monitor Pump Power
Output From:
21 Pump Working Fluids
22 Pump Water
Regulations
Triggers Function(s):
0 Operate OTEC System
2 Generate Power
21 Pump Working Fluids
22 Pump Water
23 Evaporate Working Fluid
24 Drive Turbine
25 Spin Generator
— 43 —
Saturday, November 21, 2009
4 Functional Behavior Models
Interfacing Items
Source / Destination
26 Condense Working Fluid
Startup Power
Input To:
0 Operate OTEC System
2 Generate Power
21 Pump Working Fluids
System Controls
Input To:
2 Generate Power
21 Pump Working Fluids
22 Pump Water
Output From:
1 Control OTEC System
13 Control System
14 Stop OTEC System
22 Pump Water
Allocated To:
2 Cold Water Pipe
7 Hot Water Pipe
9 Water Pump
Interfacing Items
Cold Water
Source / Destination
Input To:
26 Condense Working Fluid
Output From:
22 Pump Water
Deep Cold Water
Input To:
2 Generate Power
22 Pump Water
Hot Surface Water
Input To:
2 Generate Power
22 Pump Water
Hot Water
Input To:
23 Evaporate Working Fluid
Output From:
22 Pump Water
Net Power
Input To:
21 Pump Working Fluids
22 Pump Water
Output From:
— 44 —
Saturday, November 21, 2009
4 Functional Behavior Models
Interfacing Items
Source / Destination
25 Spin Generator
Pump Power
Input To:
36 Monitor Pump Power
Output From:
21 Pump Working Fluids
22 Pump Water
Regulations
Triggers Function(s):
0 Operate OTEC System
2 Generate Power
21 Pump Working Fluids
22 Pump Water
23 Evaporate Working Fluid
24 Drive Turbine
25 Spin Generator
26 Condense Working Fluid
System Controls
Input To:
2 Generate Power
21 Pump Working Fluids
22 Pump Water
Output From:
1 Control OTEC System
13 Control System
14 Stop OTEC System
23 Evaporate Working Fluid
Allocated To:
4 Evaporator
COOL OCEAN WATER
DEEP COLD OCEAN WATER
WARM OCEAN WATER
WARM OCEAN SURFACE WATER
Interfacing Items
Fluid Pressure
Source / Destination
Input To:
35 Monitor Fluid Pressure
Output From:
21 Pump Working Fluids
23 Evaporate Working Fluid
Hot Water
Input To:
23 Evaporate Working Fluid
— 45 —
Saturday, November 21, 2009
4 Functional Behavior Models
Interfacing Items
Source / Destination
Output From:
22 Pump Water
Liquid Ammonia
Input To:
21 Pump Working Fluids
23 Evaporate Working Fluid
Output From:
26 Condense Working Fluid
Regulations
Triggers Function(s):
0 Operate OTEC System
2 Generate Power
21 Pump Working Fluids
22 Pump Water
23 Evaporate Working Fluid
24 Drive Turbine
25 Spin Generator
26 Condense Working Fluid
Steam Ammonia
Input To:
24 Drive Turbine
Output From:
23 Evaporate Working Fluid
Temperature
Input To:
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
Output From:
23 Evaporate Working Fluid
26 Condense Working Fluid
Warm Water
Output From:
2 Generate Power
23 Evaporate Working Fluid
24 Drive Turbine
Allocated To:
8 Turbine
Interfacing Items
Ammonia Steam
Source / Destination
Input To:
26 Condense Working Fluid
Output From:
24 Drive Turbine
— 46 —
Saturday, November 21, 2009
4 Functional Behavior Models
Interfacing Items
Mechanical Energy
Source / Destination
Input To:
25 Spin Generator
Output From:
24 Drive Turbine
Regulations
Triggers Function(s):
0 Operate OTEC System
2 Generate Power
21 Pump Working Fluids
22 Pump Water
23 Evaporate Working Fluid
24 Drive Turbine
25 Spin Generator
26 Condense Working Fluid
Speed
Input To:
31 Monitor Turbine Speed
Output From:
24 Drive Turbine
Steam Ammonia
Input To:
24 Drive Turbine
Output From:
23 Evaporate Working Fluid
25 Spin Generator
Allocated To:
6 Generator
Interfacing Items
Mechanical Energy
Source / Destination
Input To:
25 Spin Generator
Output From:
24 Drive Turbine
Net Power
Input To:
21 Pump Working Fluids
22 Pump Water
Output From:
25 Spin Generator
Output Power
Input To:
32 Monitor Generator Power
— 47 —
Saturday, November 21, 2009
4 Functional Behavior Models
Interfacing Items
Source / Destination
Output From:
25 Spin Generator
Power
Output From:
0 Operate OTEC System
2 Generate Power
25 Spin Generator
Regulations
Triggers Function(s):
0 Operate OTEC System
2 Generate Power
21 Pump Working Fluids
22 Pump Water
23 Evaporate Working Fluid
24 Drive Turbine
25 Spin Generator
26 Condense Working Fluid
Standards
Triggers Function(s):
0 Operate OTEC System
1 Control OTEC System
2 Generate Power
3 Monitor Health
13 Control System
25 Spin Generator
26 Condense Working Fluid
31 Monitor Turbine Speed
32 Monitor Generator Power
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
35 Monitor Fluid Pressure
36 Monitor Pump Power
26 Condense Working Fluid
Allocated To:
3 Condenser
Interfacing Items
Ammonia Steam
Source / Destination
Input To:
26 Condense Working Fluid
Output From:
24 Drive Turbine
— 48 —
Saturday, November 21, 2009
4 Functional Behavior Models
Interfacing Items
Cold Water
Source / Destination
Input To:
26 Condense Working Fluid
Output From:
22 Pump Water
Cool Water
Output From:
2 Generate Power
26 Condense Working Fluid
Liquid Ammonia
Input To:
21 Pump Working Fluids
23 Evaporate Working Fluid
Output From:
26 Condense Working Fluid
Regulations
Triggers Function(s):
0 Operate OTEC System
2 Generate Power
21 Pump Working Fluids
22 Pump Water
23 Evaporate Working Fluid
24 Drive Turbine
25 Spin Generator
26 Condense Working Fluid
Standards
Triggers Function(s):
0 Operate OTEC System
1 Control OTEC System
2 Generate Power
3 Monitor Health
13 Control System
25 Spin Generator
26 Condense Working Fluid
31 Monitor Turbine Speed
32 Monitor Generator Power
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
35 Monitor Fluid Pressure
36 Monitor Pump Power
Temperature
Input To:
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
Output From:
23 Evaporate Working Fluid
— 49 —
Saturday, November 21, 2009
4 Functional Behavior Models
Interfacing Items
Source / Destination
26 Condense Working Fluid
31 Monitor Turbine Speed
Allocated To:
8.1 Tachometer
Interfacing Items
Speed
Source / Destination
Input To:
31 Monitor Turbine Speed
Output From:
24 Drive Turbine
Standards
Triggers Function(s):
0 Operate OTEC System
1 Control OTEC System
2 Generate Power
3 Monitor Health
13 Control System
25 Spin Generator
26 Condense Working Fluid
31 Monitor Turbine Speed
32 Monitor Generator Power
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
35 Monitor Fluid Pressure
36 Monitor Pump Power
Status
Output From:
0 Operate OTEC System
3 Monitor Health
31 Monitor Turbine Speed
32 Monitor Generator Power
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
35 Monitor Fluid Pressure
36 Monitor Pump Power
32 Monitor Generator Power
Allocated To:
6.1 Power Sensor
— 50 —
Saturday, November 21, 2009
4 Functional Behavior Models
Interfacing Items
Output Power
Source / Destination
Input To:
32 Monitor Generator Power
Output From:
25 Spin Generator
Standards
Triggers Function(s):
0 Operate OTEC System
1 Control OTEC System
2 Generate Power
3 Monitor Health
13 Control System
25 Spin Generator
26 Condense Working Fluid
31 Monitor Turbine Speed
32 Monitor Generator Power
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
35 Monitor Fluid Pressure
36 Monitor Pump Power
Status
Output From:
0 Operate OTEC System
3 Monitor Health
31 Monitor Turbine Speed
32 Monitor Generator Power
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
35 Monitor Fluid Pressure
36 Monitor Pump Power
33 Monitor Condenser Temperature
Allocated To:
3.1 ThermostatC
Interfacing Items
Standards
Source / Destination
Triggers Function(s):
0 Operate OTEC System
1 Control OTEC System
2 Generate Power
3 Monitor Health
13 Control System
25 Spin Generator
— 51 —
Saturday, November 21, 2009
4 Functional Behavior Models
Interfacing Items
Source / Destination
26
31
32
33
34
35
36
Status
Condense Working Fluid
Monitor Turbine Speed
Monitor Generator Power
Monitor Condenser Temperature
Monitor Evaporator Temperature
Monitor Fluid Pressure
Monitor Pump Power
Output From:
0 Operate OTEC System
3 Monitor Health
31 Monitor Turbine Speed
32 Monitor Generator Power
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
35 Monitor Fluid Pressure
36 Monitor Pump Power
Temperature
Input To:
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
Output From:
23 Evaporate Working Fluid
26 Condense Working Fluid
34 Monitor Evaporator Temperature
Allocated To:
4.1 ThermostatE
Interfacing Items
Standards
Source / Destination
Triggers Function(s):
0 Operate OTEC System
1 Control OTEC System
2 Generate Power
3 Monitor Health
13 Control System
25 Spin Generator
26 Condense Working Fluid
31 Monitor Turbine Speed
32 Monitor Generator Power
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
— 52 —
Saturday, November 21, 2009
4 Functional Behavior Models
Interfacing Items
Source / Destination
35 Monitor Fluid Pressure
36 Monitor Pump Power
Status
Output From:
0 Operate OTEC System
3 Monitor Health
31 Monitor Turbine Speed
32 Monitor Generator Power
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
35 Monitor Fluid Pressure
36 Monitor Pump Power
Temperature
Input To:
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
Output From:
23 Evaporate Working Fluid
26 Condense Working Fluid
35 Monitor Fluid Pressure
Allocated To:
5.1 Pressure Sensor
Interfacing Items
Fluid Pressure
Source / Destination
Input To:
35 Monitor Fluid Pressure
Output From:
21 Pump Working Fluids
23 Evaporate Working Fluid
Standards
Triggers Function(s):
0 Operate OTEC System
1 Control OTEC System
2 Generate Power
3 Monitor Health
13 Control System
25 Spin Generator
26 Condense Working Fluid
31 Monitor Turbine Speed
32 Monitor Generator Power
33 Monitor Condenser Temperature
— 53 —
Saturday, November 21, 2009
4 Functional Behavior Models
Interfacing Items
Source / Destination
34 Monitor Evaporator Temperature
35 Monitor Fluid Pressure
36 Monitor Pump Power
Status
Output From:
0 Operate OTEC System
3 Monitor Health
31 Monitor Turbine Speed
32 Monitor Generator Power
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
35 Monitor Fluid Pressure
36 Monitor Pump Power
36 Monitor Pump Power
Allocated To:
9.1 Pump Power Sensor
Interfacing Items
Pump Power
Source / Destination
Input To:
36 Monitor Pump Power
Output From:
21 Pump Working Fluids
22 Pump Water
Standards
Triggers Function(s):
0 Operate OTEC System
1 Control OTEC System
2 Generate Power
3 Monitor Health
13 Control System
25 Spin Generator
26 Condense Working Fluid
31 Monitor Turbine Speed
32 Monitor Generator Power
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
35 Monitor Fluid Pressure
36 Monitor Pump Power
Status
Output From:
0 Operate OTEC System
3 Monitor Health
— 54 —
Saturday, November 21, 2009
4 Functional Behavior Models
Interfacing Items
Source / Destination
31
32
33
34
35
36
— 55 —
Monitor Turbine Speed
Monitor Generator Power
Monitor Condenser Temperature
Monitor Evaporator Temperature
Monitor Fluid Pressure
Monitor Pump Power
Saturday, November 21, 2009
5 Item Dictionary
Ammonia Steam
Input To:
26 Condense Working Fluid
Output From:
24 Drive Turbine
Authorization
Triggers:
0 Operate OTEC System
1 Control OTEC System
11 Start OTEC System
14 Stop OTEC System
Cold Water
Decomposes:
Water
Input To:
26 Condense Working Fluid
Output From:
22 Pump Water
Controls
Input To:
13 Control System
14 Stop OTEC System
Output From:
12 Run OTEC CPU
Cool Water
Decomposes:
Water
Output From:
2 Generate Power
26 Condense Working Fluid
Data
Decomposed into Lower-Level Item(s):
Fluid Pressure
Output Power
Pump Power
Speed
— 56 —
Saturday, November 21, 2009
5 Item Dictionary
Temperature
Input To:
3 Monitor Health
Output From:
2 Generate Power
Deep Cold Water
Decomposes:
Water
Input To:
2 Generate Power
22 Pump Water
Fluid Pressure
Decomposes:
Data
Input To:
35 Monitor Fluid Pressure
Output From:
21 Pump Working Fluids
23 Evaporate Working Fluid
Hot Surface Water
Decomposes:
Water
Input To:
2 Generate Power
22 Pump Water
Hot Water
Decomposes:
Water
Input To:
23 Evaporate Working Fluid
Output From:
22 Pump Water
Liquid Ammonia
Input To:
21 Pump Working Fluids
23 Evaporate Working Fluid
— 57 —
Saturday, November 21, 2009
5 Item Dictionary
Output From:
26 Condense Working Fluid
Mechanical Energy
Input To:
25 Spin Generator
Output From:
24 Drive Turbine
Net Power
Input To:
21 Pump Working Fluids
22 Pump Water
Output From:
25 Spin Generator
Output Power
Decomposes:
Data
Input To:
32 Monitor Generator Power
Output From:
25 Spin Generator
Performance Rules
Triggers:
0 Operate OTEC System
1 Control OTEC System
12 Run OTEC CPU
Power
Output From:
0 Operate OTEC System
2 Generate Power
25 Spin Generator
Pump Power
Decomposes:
Data
Input To:
36 Monitor Pump Power
Output From:
— 58 —
Saturday, November 21, 2009
5 Item Dictionary
21 Pump Working Fluids
22 Pump Water
Regulations
Triggers:
0 Operate OTEC System
2 Generate Power
21 Pump Working Fluids
22 Pump Water
23 Evaporate Working Fluid
24 Drive Turbine
25 Spin Generator
26 Condense Working Fluid
Speed
Decomposes:
Data
Input To:
31 Monitor Turbine Speed
Output From:
24 Drive Turbine
Standards
Triggers:
0 Operate OTEC System
1 Control OTEC System
2 Generate Power
3 Monitor Health
13 Control System
25 Spin Generator
26 Condense Working Fluid
31 Monitor Turbine Speed
32 Monitor Generator Power
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
35 Monitor Fluid Pressure
36 Monitor Pump Power
Start
Input To:
13 Control System
Output From:
11 Start OTEC System
— 59 —
Saturday, November 21, 2009
5 Item Dictionary
Startup Power
Input To:
0 Operate OTEC System
2 Generate Power
21 Pump Working Fluids
Status
Decomposed into Lower-Level Item(s):
Update
Output From:
0 Operate OTEC System
3 Monitor Health
31 Monitor Turbine Speed
32 Monitor Generator Power
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
35 Monitor Fluid Pressure
36 Monitor Pump Power
Steam Ammonia
Input To:
24 Drive Turbine
Output From:
23 Evaporate Working Fluid
System Controls
Input To:
2 Generate Power
21 Pump Working Fluids
22 Pump Water
Output From:
1 Control OTEC System
13 Control System
14 Stop OTEC System
Temperature
Decomposes:
Data
Input To:
33 Monitor Condenser Temperature
34 Monitor Evaporator Temperature
Output From:
23 Evaporate Working Fluid
— 60 —
Saturday, November 21, 2009
5 Item Dictionary
26 Condense Working Fluid
Update
Decomposes:
Status
Input To:
1 Control OTEC System
12 Run OTEC CPU
Warm Water
Decomposes:
Water
Output From:
2 Generate Power
23 Evaporate Working Fluid
Water
Decomposed into Lower-Level Item(s):
Cold Water
Cool Water
Deep Cold Water
Hot Surface Water
Hot Water
Warm Water
Input To:
0 Operate OTEC System
Output From:
0 Operate OTEC System
— 61 —
Saturday, November 21, 2009
6 Components
Part I - Component List
0 - OTEC System
1 - Central Computer
2 - Cold Water Pipe
3 - Condenser
3.1 - ThermostatC
4 - Evaporator
4.1 - ThermostatE
5 - Fluid Pump
5.1 - Pressure Sensor
6 - Generator
6.1 - Power Sensor
7 - Hot Water Pipe
8 - Turbine
8.1 - Tachometer
9 - Water Pump
9.1 - Pump Power Sensor
COOL OCEAN WATER
DEEP COLD OCEAN WATER
WARM OCEAN WATER
WARM OCEAN SURFACE WATER
Part II - Component Definitions
0 OTEC System
Built From Lower-Level Component(s):
1 Central Computer
2 Cold Water Pipe
3 Condenser
4 Evaporator
5 Fluid Pump
6 Generator
7 Hot Water Pipe
8 Turbine
9 Water Pump
Joined Through Logical Interface:
Cold Water input
Cool Water output
Surface water input
Warm Water Output
— 62 —
Saturday, November 21, 2009
6 Components
1
Central Computer
nil
2
Cold Water Pipe
nil
3
Condenser
nil
4
Evaporator
nil
5
Fluid Pump
nil
6
Generator
nil
7
Hot Water Pipe
nil
8
Turbine
nil
9
Water Pump
nil
Date:
Thursday, October 29, 2009
Author:
Number:
Name:
0
Figure 17 OTEC System Subcomponent Connectivity
1 Central Computer
Built In Higher-Level Component(s):
0 OTEC System
Built From Lower-Level Component(s):
3.1 ThermostatC
4.1 ThermostatE
5.1 Pressure Sensor
6.1 Power Sensor
8.1 Tachometer
9.1 Pump Power Sensor
— 63 —
University User
(University) OTEC Sys tem
Saturday, November 21, 2009
6 Components
3.1
ThermostatC
nil
4.1
ThermostatE
nil
5.1
Pressure Sensor
nil
6.1
Power Sensor
nil
8.1
Tachometer
nil
9.1
Pump Power Sensor
nil
Date:
Saturday, November 21, 2009
Author:
Number:
Name:
(University) Central Computer
1
Figure 18 Central Computer Subcomponent Connectivity
Performs Function(s):
0 Operate OTEC System
1 Control OTEC System
3 Monitor Health
11 Start OTEC System
12 Run OTEC CPU
13 Control System
14 Stop OTEC System
Specified By:
N.1 Command
N.3 Monitoring and Control
S.13 Computer
S.14 Processing
S.15 Error Monitoring
S.16 Health Monitoring
S.17 Corrective Action
— 64 —
University User
Saturday, November 21, 2009
6 Components
2 Cold Water Pipe
Built In Higher-Level Component(s):
0 OTEC System
Joined To Logical Interface:
Cold Water input
Performs Function(s):
0 Operate OTEC System
2 Generate Power
22 Pump Water
Specified By:
N.4 System Lifetime
Q.2 Component Lifetime
Q.10 Used Water
3 Condenser
Built In Higher-Level Component(s):
0 OTEC System
Joined To Logical Interface:
Cool Water output
Performs Function(s):
0 Operate OTEC System
2 Generate Power
26 Condense Working Fluid
Specified By:
Q.10 Used Water
S.2 Heat Exchangers
S.5 Component Selection
3.1 ThermostatC
Built In Higher-Level Component(s):
1 Central Computer
Performs Function(s):
33 Monitor Condenser Temperature
Specified By:
S.5 Component Selection
S.9 Thermocouple rating
4 Evaporator
Built In Higher-Level Component(s):
0 OTEC System
Joined To Logical Interface:
Warm Water Output
— 65 —
Saturday, November 21, 2009
6 Components
Performs Function(s):
0 Operate OTEC System
2 Generate Power
23 Evaporate Working Fluid
Specified By:
Q.10 Used Water
S.2 Heat Exchangers
S.5 Component Selection
4.1 ThermostatE
Built In Higher-Level Component(s):
1 Central Computer
Performs Function(s):
34 Monitor Evaporator Temperature
Specified By:
S.5 Component Selection
S.9 Thermocouple rating
5 Fluid Pump
Built In Higher-Level Component(s):
0 OTEC System
Performs Function(s):
0 Operate OTEC System
2 Generate Power
21 Pump Working Fluids
Specified By:
F.2 Working Fluid
N.6 Survivability
N.7 Construction
N.8 Maintenance of Subsystems
N.9 MTTR
Q.2 Component Lifetime
S.1 Pumps
5.1 Pressure Sensor
Built In Higher-Level Component(s):
1 Central Computer
Performs Function(s):
35 Monitor Fluid Pressure
Specified By:
S.5 Component Selection
— 66 —
Saturday, November 21, 2009
6 Components
6 Generator
Built In Higher-Level Component(s):
0 OTEC System
Performs Function(s):
0 Operate OTEC System
2 Generate Power
25 Spin Generator
Specified By:
S.4 Generator
S.5 Component Selection
S.6 Voltage Regulators
6.1 Power Sensor
Built In Higher-Level Component(s):
1 Central Computer
Performs Function(s):
32 Monitor Generator Power
Specified By:
S.5 Component Selection
S.10 Voltage Meters
7 Hot Water Pipe
Built In Higher-Level Component(s):
0 OTEC System
Joined To Logical Interface:
Surface water input
Performs Function(s):
0 Operate OTEC System
2 Generate Power
22 Pump Water
Specified By:
N.4 System Lifetime
Q.2 Component Lifetime
Q.10 Used Water
8 Turbine
Built In Higher-Level Component(s):
0 OTEC System
Performs Function(s):
0 Operate OTEC System
2 Generate Power
24 Drive Turbine
— 67 —
Saturday, November 21, 2009
6 Components
Specified By:
F.4 Transmission Voltage
F.5 Power Factor
F.6 Distribution Voltage
F.7 Frequency
F.8 Generator Connection
N.4 System Lifetime
N.6 Survivability
N.7 Construction
N.8 Maintenance of Subsystems
N.9 MTTR
S.3 Turbine
8.1 Tachometer
Built In Higher-Level Component(s):
1 Central Computer
Specified By:
S.5 Component Selection
S.7 Tachometer rating
S.8 Tachometer status
9 Water Pump
Built In Higher-Level Component(s):
0 OTEC System
Performs Function(s):
0 Operate OTEC System
2 Generate Power
22 Pump Water
Specified By:
N.4 System Lifetime
N.6 Survivability
N.7 Construction
N.8 Maintenance of Subsystems
N.9 MTTR
Q.2 Component Lifetime
Q.10 Used Water
S.1 Pumps
9.1 Pump Power Sensor
Built In Higher-Level Component(s):
1 Central Computer
Performs Function(s):
36 Monitor Pump Power
Specified By:
S.5 Component Selection
— 68 —
Saturday, November 21, 2009
6 Components
S.10 Voltage Meters
COOL OCEAN WATER
Description:
Cold water output
Joined To Logical Interface:
Cool Water output
Performs Function(s):
0 Operate OTEC System
2 Generate Power
23 Evaporate Working Fluid
DEEP COLD OCEAN WATER
Description:
Deep cold water input
Joined To Logical Interface:
Cold Water input
Performs Function(s):
0 Operate OTEC System
2 Generate Power
23 Evaporate Working Fluid
WARM OCEAN WATER
Description:
Warm Water Output
Joined To Logical Interface:
Warm Water Output
Performs Function(s):
0 Operate OTEC System
2 Generate Power
23 Evaporate Working Fluid
WARM OCEAN SURFACE WATER
Description:
Warm surface water input
Joined To Logical Interface:
Surface water input
Performs Function(s):
0 Operate OTEC System
2 Generate Power
23 Evaporate Working Fluid
— 69 —
Saturday, November 21, 2009
7 Interfaces
Part I - Derived Functional Interfaces
1 Central Computer External I/O
Functions
0 Operate OTEC System
Interface Items
 Water
Interfacing Elements
0 Operate OTEC System
2 Cold Water Pipe
0 Operate OTEC System
3 Condenser
0 Operate OTEC System
4 Evaporator
0 Operate OTEC System
5 Fluid Pump
0 Operate OTEC System
6 Generator
0 Operate OTEC System
7 Hot Water Pipe
0 Operate OTEC System
8 Turbine
0 Operate OTEC System
9 Water Pump
0 Operate OTEC System
COOL OCEAN WATER
0 Operate OTEC System
DEEP COLD OCEAN WATER
0 Operate OTEC System
WARM OCEAN WATER
0 Operate OTEC System
WARM OCEAN SURFACE
WATER
 Water
0 Operate OTEC System
7 Hot Water Pipe
0 Operate OTEC System
2 Cold Water Pipe
0 Operate OTEC System
3 Condenser
0 Operate OTEC System
4 Evaporator
0 Operate OTEC System
5 Fluid Pump
— 70 —
Saturday, November 21, 2009
7 Interfaces
1 Central Computer External I/O
Functions
Interface Items
Interfacing Elements
0 Operate OTEC System
6 Generator
0 Operate OTEC System
8 Turbine
0 Operate OTEC System
9 Water Pump
0 Operate OTEC System
COOL OCEAN WATER
0 Operate OTEC System
DEEP COLD OCEAN WATER
0 Operate OTEC System
WARM OCEAN WATER
0 Operate OTEC System
WARM OCEAN SURFACE
WATER
1 Control OTEC System
 System Controls
2 Generate Power
2 Cold Water Pipe
2 Generate Power
3 Condenser
2 Generate Power
4 Evaporator
2 Generate Power
5 Fluid Pump
2 Generate Power
6 Generator
2 Generate Power
7 Hot Water Pipe
2 Generate Power
8 Turbine
2 Generate Power
9 Water Pump
2 Generate Power
COOL OCEAN WATER
2 Generate Power
DEEP COLD OCEAN WATER
2 Generate Power
WARM OCEAN WATER
2 Generate Power
— 71 —
Saturday, November 21, 2009
7 Interfaces
1 Central Computer External I/O
Functions
Interface Items
Interfacing Elements
WARM OCEAN SURFACE
WATER
21 Pump Working Fluids
5 Fluid Pump
22 Pump Water
2 Cold Water Pipe
22 Pump Water
7 Hot Water Pipe
22 Pump Water
9 Water Pump
3 Monitor Health
 Data
2 Generate Power
7 Hot Water Pipe
2 Generate Power
2 Cold Water Pipe
2 Generate Power
3 Condenser
2 Generate Power
4 Evaporator
2 Generate Power
5 Fluid Pump
2 Generate Power
6 Generator
2 Generate Power
8 Turbine
2 Generate Power
9 Water Pump
2 Generate Power
COOL OCEAN WATER
2 Generate Power
DEEP COLD OCEAN WATER
2 Generate Power
WARM OCEAN WATER
2 Generate Power
WARM OCEAN SURFACE
WATER
13 Control System
 System Controls
2 Generate Power
2 Cold Water Pipe
2 Generate Power
— 72 —
Saturday, November 21, 2009
7 Interfaces
1 Central Computer External I/O
Functions
Interface Items
Interfacing Elements
3 Condenser
2 Generate Power
4 Evaporator
2 Generate Power
5 Fluid Pump
2 Generate Power
6 Generator
2 Generate Power
7 Hot Water Pipe
2 Generate Power
8 Turbine
2 Generate Power
9 Water Pump
2 Generate Power
COOL OCEAN WATER
2 Generate Power
DEEP COLD OCEAN WATER
2 Generate Power
WARM OCEAN WATER
2 Generate Power
WARM OCEAN SURFACE
WATER
21 Pump Working Fluids
5 Fluid Pump
22 Pump Water
2 Cold Water Pipe
22 Pump Water
7 Hot Water Pipe
22 Pump Water
9 Water Pump
14 Stop OTEC System
 System Controls
2 Generate Power
2 Cold Water Pipe
2 Generate Power
3 Condenser
2 Generate Power
4 Evaporator
2 Generate Power
5 Fluid Pump
— 73 —
Saturday, November 21, 2009
7 Interfaces
1 Central Computer External I/O
Functions
Interface Items
Interfacing Elements
2 Generate Power
6 Generator
2 Generate Power
7 Hot Water Pipe
2 Generate Power
8 Turbine
2 Generate Power
9 Water Pump
2 Generate Power
COOL OCEAN WATER
2 Generate Power
DEEP COLD OCEAN WATER
2 Generate Power
WARM OCEAN WATER
2 Generate Power
WARM OCEAN SURFACE
WATER
21 Pump Working Fluids
5 Fluid Pump
22 Pump Water
2 Cold Water Pipe
22 Pump Water
7 Hot Water Pipe
22 Pump Water
9 Water Pump
2 Cold Water Pipe External I/O
Functions
0 Operate OTEC System
Interface Items
 Water
Interfacing Elements
0 Operate OTEC System
1 Central Computer
0 Operate OTEC System
3 Condenser
0 Operate OTEC System
4 Evaporator
0 Operate OTEC System
5 Fluid Pump
0 Operate OTEC System
6 Generator
— 74 —
Saturday, November 21, 2009
7 Interfaces
2 Cold Water Pipe External I/O
Functions
Interface Items
Interfacing Elements
0 Operate OTEC System
7 Hot Water Pipe
0 Operate OTEC System
8 Turbine
0 Operate OTEC System
9 Water Pump
0 Operate OTEC System
COOL OCEAN WATER
0 Operate OTEC System
DEEP COLD OCEAN WATER
0 Operate OTEC System
WARM OCEAN WATER
0 Operate OTEC System
WARM OCEAN SURFACE
WATER
 Water
0 Operate OTEC System
7 Hot Water Pipe
0 Operate OTEC System
1 Central Computer
0 Operate OTEC System
3 Condenser
0 Operate OTEC System
4 Evaporator
0 Operate OTEC System
5 Fluid Pump
0 Operate OTEC System
6 Generator
0 Operate OTEC System
8 Turbine
0 Operate OTEC System
9 Water Pump
0 Operate OTEC System
COOL OCEAN WATER
0 Operate OTEC System
DEEP COLD OCEAN WATER
0 Operate OTEC System
WARM OCEAN WATER
0 Operate OTEC System
— 75 —
Saturday, November 21, 2009
7 Interfaces
2 Cold Water Pipe External I/O
Functions
Interface Items
Interfacing Elements
WARM OCEAN SURFACE
WATER
2 Generate Power
 Data
3 Monitor Health
1 Central Computer
 System Controls
1 Control OTEC System
1 Central Computer
13 Control System
1 Central Computer
14 Stop OTEC System
1 Central Computer
22 Pump Water
 Cold Water
26 Condense Working Fluid
3 Condenser
 Hot Water
23 Evaporate Working Fluid
4 Evaporator
23 Evaporate Working Fluid
COOL OCEAN WATER
23 Evaporate Working Fluid
DEEP COLD OCEAN WATER
23 Evaporate Working Fluid
WARM OCEAN WATER
23 Evaporate Working Fluid
WARM OCEAN SURFACE
WATER
 Pump Power
36 Monitor Pump Power
9.1 Pump Power Sensor
 Net Power
25 Spin Generator
6 Generator
 System Controls
1 Control OTEC System
1 Central Computer
13 Control System
1 Central Computer
14 Stop OTEC System
1 Central Computer
3 Condenser External I/O
Functions
0 Operate OTEC System
Interface Items
 Water
Interfacing Elements
0 Operate OTEC System
1 Central Computer
— 76 —
Saturday, November 21, 2009
7 Interfaces
3 Condenser External I/O
Functions
Interface Items
Interfacing Elements
0 Operate OTEC System
2 Cold Water Pipe
0 Operate OTEC System
4 Evaporator
0 Operate OTEC System
5 Fluid Pump
0 Operate OTEC System
6 Generator
0 Operate OTEC System
7 Hot Water Pipe
0 Operate OTEC System
8 Turbine
0 Operate OTEC System
9 Water Pump
0 Operate OTEC System
COOL OCEAN WATER
0 Operate OTEC System
DEEP COLD OCEAN WATER
0 Operate OTEC System
WARM OCEAN WATER
0 Operate OTEC System
WARM OCEAN SURFACE
WATER
 Water
0 Operate OTEC System
7 Hot Water Pipe
0 Operate OTEC System
1 Central Computer
0 Operate OTEC System
2 Cold Water Pipe
0 Operate OTEC System
4 Evaporator
0 Operate OTEC System
5 Fluid Pump
0 Operate OTEC System
6 Generator
0 Operate OTEC System
8 Turbine
0 Operate OTEC System
— 77 —
Saturday, November 21, 2009
7 Interfaces
3 Condenser External I/O
Functions
Interface Items
Interfacing Elements
9 Water Pump
0 Operate OTEC System
COOL OCEAN WATER
0 Operate OTEC System
DEEP COLD OCEAN WATER
0 Operate OTEC System
WARM OCEAN WATER
0 Operate OTEC System
WARM OCEAN SURFACE
WATER
2 Generate Power
 Data
3 Monitor Health
1 Central Computer
 System Controls
1 Control OTEC System
1 Central Computer
13 Control System
1 Central Computer
14 Stop OTEC System
1 Central Computer
26 Condense Working Fluid
 Liquid Ammonia
21 Pump Working Fluids
5 Fluid Pump
23 Evaporate Working Fluid
4 Evaporator
23 Evaporate Working Fluid
COOL OCEAN WATER
23 Evaporate Working Fluid
DEEP COLD OCEAN WATER
23 Evaporate Working Fluid
WARM OCEAN WATER
23 Evaporate Working Fluid
WARM OCEAN SURFACE
WATER
 Temperature
33 Monitor Condenser Temperature
3.1 ThermostatC
34 Monitor Evaporator Temperature
4.1 ThermostatE
 Ammonia Steam
24 Drive Turbine
8 Turbine
 Cold Water
— 78 —
22 Pump Water
Saturday, November 21, 2009
7 Interfaces
3 Condenser External I/O
Functions
Interface Items
Interfacing Elements
2 Cold Water Pipe
22 Pump Water
7 Hot Water Pipe
22 Pump Water
9 Water Pump
3.1 ThermostatC External I/O
Functions
Interface Items
33 Monitor Condenser Temperature  Temperature
Interfacing Elements
26 Condense Working Fluid
3 Condenser
23 Evaporate Working Fluid
4 Evaporator
23 Evaporate Working Fluid
COOL OCEAN WATER
23 Evaporate Working Fluid
DEEP COLD OCEAN WATER
23 Evaporate Working Fluid
WARM OCEAN WATER
23 Evaporate Working Fluid
WARM OCEAN SURFACE
WATER
4 Evaporator External I/O
Functions
0 Operate OTEC System
Interface Items
 Water
Interfacing Elements
0 Operate OTEC System
1 Central Computer
0 Operate OTEC System
2 Cold Water Pipe
0 Operate OTEC System
3 Condenser
0 Operate OTEC System
5 Fluid Pump
0 Operate OTEC System
6 Generator
0 Operate OTEC System
7 Hot Water Pipe
0 Operate OTEC System
8 Turbine
— 79 —
Saturday, November 21, 2009
7 Interfaces
4 Evaporator External I/O
Functions
Interface Items
Interfacing Elements
0 Operate OTEC System
9 Water Pump
0 Operate OTEC System
COOL OCEAN WATER
0 Operate OTEC System
DEEP COLD OCEAN WATER
0 Operate OTEC System
WARM OCEAN WATER
0 Operate OTEC System
WARM OCEAN SURFACE
WATER
 Water
0 Operate OTEC System
7 Hot Water Pipe
0 Operate OTEC System
1 Central Computer
0 Operate OTEC System
2 Cold Water Pipe
0 Operate OTEC System
3 Condenser
0 Operate OTEC System
5 Fluid Pump
0 Operate OTEC System
6 Generator
0 Operate OTEC System
8 Turbine
0 Operate OTEC System
9 Water Pump
0 Operate OTEC System
COOL OCEAN WATER
0 Operate OTEC System
DEEP COLD OCEAN WATER
0 Operate OTEC System
WARM OCEAN WATER
0 Operate OTEC System
WARM OCEAN SURFACE
WATER
2 Generate Power
 Data
3 Monitor Health
1 Central Computer
— 80 —
Saturday, November 21, 2009
7 Interfaces
4 Evaporator External I/O
Functions
Interface Items
 System Controls
Interfacing Elements
1 Control OTEC System
1 Central Computer
13 Control System
1 Central Computer
14 Stop OTEC System
1 Central Computer
23 Evaporate Working Fluid
 Fluid Pressure
35 Monitor Fluid Pressure
5.1 Pressure Sensor
 Steam Ammonia
24 Drive Turbine
8 Turbine
 Temperature
33 Monitor Condenser Temperature
3.1 ThermostatC
34 Monitor Evaporator Temperature
4.1 ThermostatE
 Hot Water
22 Pump Water
2 Cold Water Pipe
22 Pump Water
7 Hot Water Pipe
22 Pump Water
9 Water Pump
 Liquid Ammonia
26 Condense Working Fluid
3 Condenser
4.1 ThermostatE External I/O
Functions
Interface Items
34 Monitor Evaporator Temperature  Temperature
Interfacing Elements
26 Condense Working Fluid
3 Condenser
23 Evaporate Working Fluid
4 Evaporator
23 Evaporate Working Fluid
COOL OCEAN WATER
23 Evaporate Working Fluid
DEEP COLD OCEAN WATER
23 Evaporate Working Fluid
WARM OCEAN WATER
23 Evaporate Working Fluid
WARM OCEAN SURFACE
WATER
— 81 —
Saturday, November 21, 2009
7 Interfaces
5 Fluid Pump External I/O
Functions
0 Operate OTEC System
Interface Items
 Water
Interfacing Elements
0 Operate OTEC System
1 Central Computer
0 Operate OTEC System
2 Cold Water Pipe
0 Operate OTEC System
3 Condenser
0 Operate OTEC System
4 Evaporator
0 Operate OTEC System
6 Generator
0 Operate OTEC System
7 Hot Water Pipe
0 Operate OTEC System
8 Turbine
0 Operate OTEC System
9 Water Pump
0 Operate OTEC System
COOL OCEAN WATER
0 Operate OTEC System
DEEP COLD OCEAN WATER
0 Operate OTEC System
WARM OCEAN WATER
0 Operate OTEC System
WARM OCEAN SURFACE
WATER
 Water
0 Operate OTEC System
7 Hot Water Pipe
0 Operate OTEC System
1 Central Computer
0 Operate OTEC System
2 Cold Water Pipe
0 Operate OTEC System
3 Condenser
0 Operate OTEC System
4 Evaporator
0 Operate OTEC System
6 Generator
— 82 —
Saturday, November 21, 2009
7 Interfaces
5 Fluid Pump External I/O
Functions
Interface Items
Interfacing Elements
0 Operate OTEC System
8 Turbine
0 Operate OTEC System
9 Water Pump
0 Operate OTEC System
COOL OCEAN WATER
0 Operate OTEC System
DEEP COLD OCEAN WATER
0 Operate OTEC System
WARM OCEAN WATER
0 Operate OTEC System
WARM OCEAN SURFACE
WATER
2 Generate Power
 Data
3 Monitor Health
1 Central Computer
 System Controls
1 Control OTEC System
1 Central Computer
13 Control System
1 Central Computer
14 Stop OTEC System
1 Central Computer
21 Pump Working Fluids
 Fluid Pressure
35 Monitor Fluid Pressure
5.1 Pressure Sensor
 Pump Power
36 Monitor Pump Power
9.1 Pump Power Sensor
 Liquid Ammonia
26 Condense Working Fluid
3 Condenser
 Net Power
25 Spin Generator
6 Generator
 System Controls
1 Control OTEC System
1 Central Computer
13 Control System
1 Central Computer
14 Stop OTEC System
1 Central Computer
— 83 —
Saturday, November 21, 2009
7 Interfaces
5.1 Pressure Sensor External I/O
Functions
35 Monitor Fluid Pressure
Interface Items
 Fluid Pressure
Interfacing Elements
23 Evaporate Working Fluid
WARM OCEAN SURFACE
WATER
21 Pump Working Fluids
5 Fluid Pump
23 Evaporate Working Fluid
4 Evaporator
23 Evaporate Working Fluid
COOL OCEAN WATER
23 Evaporate Working Fluid
DEEP COLD OCEAN WATER
23 Evaporate Working Fluid
WARM OCEAN WATER
6 Generator External I/O
Functions
0 Operate OTEC System
Interface Items
 Water
Interfacing Elements
0 Operate OTEC System
1 Central Computer
0 Operate OTEC System
2 Cold Water Pipe
0 Operate OTEC System
3 Condenser
0 Operate OTEC System
4 Evaporator
0 Operate OTEC System
5 Fluid Pump
0 Operate OTEC System
7 Hot Water Pipe
0 Operate OTEC System
8 Turbine
0 Operate OTEC System
9 Water Pump
0 Operate OTEC System
COOL OCEAN WATER
0 Operate OTEC System
DEEP COLD OCEAN WATER
0 Operate OTEC System
WARM OCEAN WATER
— 84 —
Saturday, November 21, 2009
7 Interfaces
6 Generator External I/O
Functions
Interface Items
Interfacing Elements
0 Operate OTEC System
WARM OCEAN SURFACE
WATER
 Water
0 Operate OTEC System
7 Hot Water Pipe
0 Operate OTEC System
1 Central Computer
0 Operate OTEC System
2 Cold Water Pipe
0 Operate OTEC System
3 Condenser
0 Operate OTEC System
4 Evaporator
0 Operate OTEC System
5 Fluid Pump
0 Operate OTEC System
8 Turbine
0 Operate OTEC System
9 Water Pump
0 Operate OTEC System
COOL OCEAN WATER
0 Operate OTEC System
DEEP COLD OCEAN WATER
0 Operate OTEC System
WARM OCEAN WATER
0 Operate OTEC System
WARM OCEAN SURFACE
WATER
2 Generate Power
 Data
3 Monitor Health
1 Central Computer
 System Controls
1 Control OTEC System
1 Central Computer
13 Control System
1 Central Computer
14 Stop OTEC System
1 Central Computer
25 Spin Generator
 Net Power
21 Pump Working Fluids
5 Fluid Pump
— 85 —
Saturday, November 21, 2009
7 Interfaces
6 Generator External I/O
Functions
Interface Items
Interfacing Elements
22 Pump Water
2 Cold Water Pipe
22 Pump Water
7 Hot Water Pipe
22 Pump Water
9 Water Pump
 Output Power
32 Monitor Generator Power
6.1 Power Sensor
 Mechanical Energy
24 Drive Turbine
8 Turbine
6.1 Power Sensor External I/O
Functions
32 Monitor Generator Power
Interface Items
 Output Power
Interfacing Elements
25 Spin Generator
6 Generator
7 Hot Water Pipe External I/O
Functions
0 Operate OTEC System
Interface Items
 Water
Interfacing Elements
0 Operate OTEC System
1 Central Computer
0 Operate OTEC System
2 Cold Water Pipe
0 Operate OTEC System
3 Condenser
0 Operate OTEC System
4 Evaporator
0 Operate OTEC System
5 Fluid Pump
0 Operate OTEC System
6 Generator
0 Operate OTEC System
8 Turbine
0 Operate OTEC System
9 Water Pump
0 Operate OTEC System
COOL OCEAN WATER
0 Operate OTEC System
DEEP COLD OCEAN WATER
— 86 —
Saturday, November 21, 2009
7 Interfaces
7 Hot Water Pipe External I/O
Functions
Interface Items
Interfacing Elements
0 Operate OTEC System
WARM OCEAN WATER
0 Operate OTEC System
WARM OCEAN SURFACE
WATER
 Water
0 Operate OTEC System
6 Generator
0 Operate OTEC System
1 Central Computer
0 Operate OTEC System
2 Cold Water Pipe
0 Operate OTEC System
3 Condenser
0 Operate OTEC System
4 Evaporator
0 Operate OTEC System
5 Fluid Pump
0 Operate OTEC System
8 Turbine
0 Operate OTEC System
9 Water Pump
0 Operate OTEC System
COOL OCEAN WATER
0 Operate OTEC System
DEEP COLD OCEAN WATER
0 Operate OTEC System
WARM OCEAN WATER
0 Operate OTEC System
WARM OCEAN SURFACE
WATER
2 Generate Power
 Data
3 Monitor Health
1 Central Computer
 System Controls
1 Control OTEC System
1 Central Computer
13 Control System
1 Central Computer
14 Stop OTEC System
1 Central Computer
— 87 —
Saturday, November 21, 2009
7 Interfaces
7 Hot Water Pipe External I/O
Functions
22 Pump Water
Interface Items
 Cold Water
Interfacing Elements
26 Condense Working Fluid
3 Condenser
 Hot Water
23 Evaporate Working Fluid
4 Evaporator
23 Evaporate Working Fluid
COOL OCEAN WATER
23 Evaporate Working Fluid
DEEP COLD OCEAN WATER
23 Evaporate Working Fluid
WARM OCEAN WATER
23 Evaporate Working Fluid
WARM OCEAN SURFACE
WATER
 Pump Power
36 Monitor Pump Power
9.1 Pump Power Sensor
 Net Power
25 Spin Generator
6 Generator
 System Controls
1 Control OTEC System
1 Central Computer
13 Control System
1 Central Computer
14 Stop OTEC System
1 Central Computer
8 Turbine External I/O
Functions
0 Operate OTEC System
Interface Items
 Water
Interfacing Elements
0 Operate OTEC System
1 Central Computer
0 Operate OTEC System
2 Cold Water Pipe
0 Operate OTEC System
3 Condenser
0 Operate OTEC System
4 Evaporator
0 Operate OTEC System
5 Fluid Pump
0 Operate OTEC System
6 Generator
— 88 —
Saturday, November 21, 2009
7 Interfaces
8 Turbine External I/O
Functions
Interface Items
Interfacing Elements
0 Operate OTEC System
7 Hot Water Pipe
0 Operate OTEC System
9 Water Pump
0 Operate OTEC System
COOL OCEAN WATER
0 Operate OTEC System
DEEP COLD OCEAN WATER
0 Operate OTEC System
WARM OCEAN WATER
0 Operate OTEC System
WARM OCEAN SURFACE
WATER
 Water
0 Operate OTEC System
6 Generator
0 Operate OTEC System
1 Central Computer
0 Operate OTEC System
2 Cold Water Pipe
0 Operate OTEC System
3 Condenser
0 Operate OTEC System
4 Evaporator
0 Operate OTEC System
5 Fluid Pump
0 Operate OTEC System
7 Hot Water Pipe
0 Operate OTEC System
9 Water Pump
0 Operate OTEC System
COOL OCEAN WATER
0 Operate OTEC System
DEEP COLD OCEAN WATER
0 Operate OTEC System
WARM OCEAN WATER
0 Operate OTEC System
WARM OCEAN SURFACE
WATER
— 89 —
Saturday, November 21, 2009
7 Interfaces
8 Turbine External I/O
Functions
2 Generate Power
Interface Items
 Data
Interfacing Elements
3 Monitor Health
1 Central Computer
 System Controls
1 Control OTEC System
1 Central Computer
13 Control System
1 Central Computer
14 Stop OTEC System
1 Central Computer
24 Drive Turbine
 Ammonia Steam
26 Condense Working Fluid
3 Condenser
 Mechanical Energy
25 Spin Generator
6 Generator
 Speed
31 Monitor Turbine Speed
8.1 Tachometer
 Steam Ammonia
23 Evaporate Working Fluid
4 Evaporator
23 Evaporate Working Fluid
COOL OCEAN WATER
23 Evaporate Working Fluid
DEEP COLD OCEAN WATER
23 Evaporate Working Fluid
WARM OCEAN WATER
23 Evaporate Working Fluid
WARM OCEAN SURFACE
WATER
8.1 Tachometer External I/O
Functions
31 Monitor Turbine Speed
Interface Items
 Speed
Interfacing Elements
24 Drive Turbine
8 Turbine
9 Water Pump External I/O
Functions
0 Operate OTEC System
Interface Items
 Water
Interfacing Elements
0 Operate OTEC System
1 Central Computer
0 Operate OTEC System
2 Cold Water Pipe
0 Operate OTEC System
— 90 —
Saturday, November 21, 2009
7 Interfaces
9 Water Pump External I/O
Functions
Interface Items
Interfacing Elements
3 Condenser
0 Operate OTEC System
4 Evaporator
0 Operate OTEC System
5 Fluid Pump
0 Operate OTEC System
6 Generator
0 Operate OTEC System
7 Hot Water Pipe
0 Operate OTEC System
8 Turbine
0 Operate OTEC System
COOL OCEAN WATER
0 Operate OTEC System
DEEP COLD OCEAN WATER
0 Operate OTEC System
WARM OCEAN WATER
0 Operate OTEC System
WARM OCEAN SURFACE
WATER
 Water
0 Operate OTEC System
6 Generator
0 Operate OTEC System
1 Central Computer
0 Operate OTEC System
2 Cold Water Pipe
0 Operate OTEC System
3 Condenser
0 Operate OTEC System
4 Evaporator
0 Operate OTEC System
5 Fluid Pump
0 Operate OTEC System
7 Hot Water Pipe
0 Operate OTEC System
8 Turbine
0 Operate OTEC System
COOL OCEAN WATER
— 91 —
Saturday, November 21, 2009
7 Interfaces
9 Water Pump External I/O
Functions
Interface Items
Interfacing Elements
0 Operate OTEC System
DEEP COLD OCEAN WATER
0 Operate OTEC System
WARM OCEAN WATER
0 Operate OTEC System
WARM OCEAN SURFACE
WATER
2 Generate Power
 Data
3 Monitor Health
1 Central Computer
 System Controls
1 Control OTEC System
1 Central Computer
13 Control System
1 Central Computer
14 Stop OTEC System
1 Central Computer
22 Pump Water
 Cold Water
26 Condense Working Fluid
3 Condenser
 Hot Water
23 Evaporate Working Fluid
4 Evaporator
23 Evaporate Working Fluid
COOL OCEAN WATER
23 Evaporate Working Fluid
DEEP COLD OCEAN WATER
23 Evaporate Working Fluid
WARM OCEAN WATER
23 Evaporate Working Fluid
WARM OCEAN SURFACE
WATER
 Pump Power
36 Monitor Pump Power
9.1 Pump Power Sensor
 Net Power
25 Spin Generator
6 Generator
 System Controls
1 Control OTEC System
1 Central Computer
13 Control System
1 Central Computer
14 Stop OTEC System
1 Central Computer
— 92 —
Saturday, November 21, 2009
7 Interfaces
9.1 Pump Power Sensor External I/O
Functions
36 Monitor Pump Power
Interface Items
 Pump Power
Interfacing Elements
21 Pump Working Fluids
5 Fluid Pump
22 Pump Water
2 Cold Water Pipe
22 Pump Water
7 Hot Water Pipe
22 Pump Water
9 Water Pump
COOL OCEAN WATER External I/O
Functions
0 Operate OTEC System
Interface Items
 Water
Interfacing Elements
0 Operate OTEC System
1 Central Computer
0 Operate OTEC System
2 Cold Water Pipe
0 Operate OTEC System
3 Condenser
0 Operate OTEC System
4 Evaporator
0 Operate OTEC System
5 Fluid Pump
0 Operate OTEC System
6 Generator
0 Operate OTEC System
7 Hot Water Pipe
0 Operate OTEC System
8 Turbine
0 Operate OTEC System
9 Water Pump
0 Operate OTEC System
DEEP COLD OCEAN WATER
0 Operate OTEC System
WARM OCEAN WATER
0 Operate OTEC System
WARM OCEAN SURFACE
WATER
 Water
0 Operate OTEC System
— 93 —
Saturday, November 21, 2009
7 Interfaces
COOL OCEAN WATER External I/O
Functions
Interface Items
Interfacing Elements
6 Generator
0 Operate OTEC System
1 Central Computer
0 Operate OTEC System
2 Cold Water Pipe
0 Operate OTEC System
3 Condenser
0 Operate OTEC System
4 Evaporator
0 Operate OTEC System
5 Fluid Pump
0 Operate OTEC System
7 Hot Water Pipe
0 Operate OTEC System
8 Turbine
0 Operate OTEC System
9 Water Pump
0 Operate OTEC System
DEEP COLD OCEAN WATER
0 Operate OTEC System
WARM OCEAN WATER
0 Operate OTEC System
WARM OCEAN SURFACE
WATER
2 Generate Power
 Data
3 Monitor Health
1 Central Computer
 System Controls
1 Control OTEC System
1 Central Computer
13 Control System
1 Central Computer
14 Stop OTEC System
1 Central Computer
23 Evaporate Working Fluid
 Fluid Pressure
35 Monitor Fluid Pressure
5.1 Pressure Sensor
 Steam Ammonia
24 Drive Turbine
8 Turbine
 Temperature
33 Monitor Condenser Temperature
3.1 ThermostatC
— 94 —
Saturday, November 21, 2009
7 Interfaces
COOL OCEAN WATER External I/O
Functions
Interface Items
Interfacing Elements
34 Monitor Evaporator Temperature
4.1 ThermostatE
 Hot Water
22 Pump Water
2 Cold Water Pipe
22 Pump Water
7 Hot Water Pipe
22 Pump Water
9 Water Pump
 Liquid Ammonia
26 Condense Working Fluid
3 Condenser
DEEP COLD OCEAN WATER External I/O
Functions
0 Operate OTEC System
Interface Items
 Water
Interfacing Elements
0 Operate OTEC System
1 Central Computer
0 Operate OTEC System
2 Cold Water Pipe
0 Operate OTEC System
3 Condenser
0 Operate OTEC System
4 Evaporator
0 Operate OTEC System
5 Fluid Pump
0 Operate OTEC System
6 Generator
0 Operate OTEC System
7 Hot Water Pipe
0 Operate OTEC System
8 Turbine
0 Operate OTEC System
9 Water Pump
0 Operate OTEC System
COOL OCEAN WATER
0 Operate OTEC System
WARM OCEAN WATER
0 Operate OTEC System
WARM OCEAN SURFACE
WATER
— 95 —
Saturday, November 21, 2009
7 Interfaces
DEEP COLD OCEAN WATER External I/O
Functions
Interface Items
 Water
Interfacing Elements
0 Operate OTEC System
6 Generator
0 Operate OTEC System
1 Central Computer
0 Operate OTEC System
2 Cold Water Pipe
0 Operate OTEC System
3 Condenser
0 Operate OTEC System
4 Evaporator
0 Operate OTEC System
5 Fluid Pump
0 Operate OTEC System
7 Hot Water Pipe
0 Operate OTEC System
8 Turbine
0 Operate OTEC System
9 Water Pump
0 Operate OTEC System
COOL OCEAN WATER
0 Operate OTEC System
WARM OCEAN WATER
0 Operate OTEC System
WARM OCEAN SURFACE
WATER
2 Generate Power
 Data
3 Monitor Health
1 Central Computer
 System Controls
1 Control OTEC System
1 Central Computer
13 Control System
1 Central Computer
14 Stop OTEC System
1 Central Computer
23 Evaporate Working Fluid
 Fluid Pressure
35 Monitor Fluid Pressure
5.1 Pressure Sensor
 Steam Ammonia
24 Drive Turbine
8 Turbine
 Temperature
— 96 —
33 Monitor Condenser Temperature
Saturday, November 21, 2009
7 Interfaces
DEEP COLD OCEAN WATER External I/O
Functions
Interface Items
Interfacing Elements
3.1 ThermostatC
34 Monitor Evaporator Temperature
4.1 ThermostatE
 Hot Water
22 Pump Water
2 Cold Water Pipe
22 Pump Water
7 Hot Water Pipe
22 Pump Water
9 Water Pump
 Liquid Ammonia
26 Condense Working Fluid
3 Condenser
WARM OCEAN WATER External I/O
Functions
0 Operate OTEC System
Interface Items
 Water
Interfacing Elements
0 Operate OTEC System
1 Central Computer
0 Operate OTEC System
2 Cold Water Pipe
0 Operate OTEC System
3 Condenser
0 Operate OTEC System
4 Evaporator
0 Operate OTEC System
5 Fluid Pump
0 Operate OTEC System
6 Generator
0 Operate OTEC System
7 Hot Water Pipe
0 Operate OTEC System
8 Turbine
0 Operate OTEC System
9 Water Pump
0 Operate OTEC System
COOL OCEAN WATER
0 Operate OTEC System
DEEP COLD OCEAN WATER
0 Operate OTEC System
WARM OCEAN SURFACE
— 97 —
Saturday, November 21, 2009
7 Interfaces
WARM OCEAN WATER External I/O
Functions
Interface Items
Interfacing Elements
WATER
 Water
0 Operate OTEC System
6 Generator
0 Operate OTEC System
1 Central Computer
0 Operate OTEC System
2 Cold Water Pipe
0 Operate OTEC System
3 Condenser
0 Operate OTEC System
4 Evaporator
0 Operate OTEC System
5 Fluid Pump
0 Operate OTEC System
7 Hot Water Pipe
0 Operate OTEC System
8 Turbine
0 Operate OTEC System
9 Water Pump
0 Operate OTEC System
COOL OCEAN WATER
0 Operate OTEC System
DEEP COLD OCEAN WATER
0 Operate OTEC System
WARM OCEAN SURFACE
WATER
2 Generate Power
 Data
3 Monitor Health
1 Central Computer
 System Controls
1 Control OTEC System
1 Central Computer
13 Control System
1 Central Computer
14 Stop OTEC System
1 Central Computer
23 Evaporate Working Fluid
 Fluid Pressure
35 Monitor Fluid Pressure
5.1 Pressure Sensor
 Steam Ammonia
24 Drive Turbine
8 Turbine
— 98 —
Saturday, November 21, 2009
7 Interfaces
WARM OCEAN WATER External I/O
Functions
Interface Items
 Temperature
Interfacing Elements
33 Monitor Condenser Temperature
3.1 ThermostatC
34 Monitor Evaporator Temperature
4.1 ThermostatE
 Hot Water
22 Pump Water
2 Cold Water Pipe
22 Pump Water
7 Hot Water Pipe
22 Pump Water
9 Water Pump
 Liquid Ammonia
26 Condense Working Fluid
3 Condenser
WARM OCEAN SURFACE WATER External I/O
Functions
0 Operate OTEC System
Interface Items
 Water
Interfacing Elements
0 Operate OTEC System
1 Central Computer
0 Operate OTEC System
2 Cold Water Pipe
0 Operate OTEC System
3 Condenser
0 Operate OTEC System
4 Evaporator
0 Operate OTEC System
5 Fluid Pump
0 Operate OTEC System
6 Generator
0 Operate OTEC System
7 Hot Water Pipe
0 Operate OTEC System
8 Turbine
0 Operate OTEC System
9 Water Pump
0 Operate OTEC System
COOL OCEAN WATER
0 Operate OTEC System
DEEP COLD OCEAN WATER
0 Operate OTEC System
— 99 —
Saturday, November 21, 2009
7 Interfaces
WARM OCEAN SURFACE WATER External I/O
Functions
Interface Items
Interfacing Elements
WARM OCEAN WATER
 Water
0 Operate OTEC System
6 Generator
0 Operate OTEC System
1 Central Computer
0 Operate OTEC System
2 Cold Water Pipe
0 Operate OTEC System
3 Condenser
0 Operate OTEC System
4 Evaporator
0 Operate OTEC System
5 Fluid Pump
0 Operate OTEC System
7 Hot Water Pipe
0 Operate OTEC System
8 Turbine
0 Operate OTEC System
9 Water Pump
0 Operate OTEC System
COOL OCEAN WATER
0 Operate OTEC System
DEEP COLD OCEAN WATER
0 Operate OTEC System
WARM OCEAN WATER
2 Generate Power
 Data
3 Monitor Health
1 Central Computer
 System Controls
1 Control OTEC System
1 Central Computer
13 Control System
1 Central Computer
14 Stop OTEC System
1 Central Computer
23 Evaporate Working Fluid
 Fluid Pressure
35 Monitor Fluid Pressure
5.1 Pressure Sensor
 Steam Ammonia
24 Drive Turbine
8 Turbine
— 100 —
Saturday, November 21, 2009
7 Interfaces
WARM OCEAN SURFACE WATER External I/O
Functions
Interface Items
 Temperature
Interfacing Elements
33 Monitor Condenser Temperature
3.1 ThermostatC
34 Monitor Evaporator Temperature
4.1 ThermostatE
 Hot Water
22 Pump Water
2 Cold Water Pipe
22 Pump Water
7 Hot Water Pipe
22 Pump Water
9 Water Pump
 Liquid Ammonia
26 Condense Working Fluid
3 Condenser
Part II - Logical Interfaces
Cold Water input
Connecting Elements:
2 Cold Water Pipe
0 OTEC System
DEEP COLD OCEAN WATER
Cool Water output
Connecting Elements:
3 Condenser
0 OTEC System
COOL OCEAN WATER
Surface water input
Connecting Elements:
7 Hot Water Pipe
0 OTEC System
WARM OCEAN SURFACE WATER
Warm Water Output
Connecting Elements:
4 Evaporator
0 OTEC System
WARM OCEAN WATER
— 101 —
Saturday, November 21, 2009
7 Interfaces
Part III - Physical Interfaces
— 102 —