Nassau Community College Life Sciences Building
Garden City, NY
Michael Reilly, Jr. – Mechanical Option
Advisor – James Freihaut, PhD & Dustin Eplee
The Pennsylvania State University
•Introduction
•Summary
•Life Sciences Building
•Mechanical System
•Depth 1: Decentralized Air System
•Depth 2: Chiller Plant Design
•Breadth 1: Daylighting
•Conclusion
•Acknowledgements
•Questions
Michael Reilly, Jr.
•
•
•
•
20% decrease in first cost with chilled beam & dedicated
outdoor air system
50% reduction in supply air
18% increase in chilled water flow
26% decrease in energy*
Nassau Community College Life Sciences Building
•
•
$26,000 lower first cost with variable primary
flow
$1,500 annual energy savings with variable
primary flow
Mechanical Option
•Introduction
•Summary
•Life Sciences Building
•Mechanical System
•Depth 1: Decentralized Air System
•Depth 2: Chiller Plant Design
•Breadth 1: Daylighting
•Conclusion
•Acknowledgements
•Questions
Michael Reilly, Jr.
Size
Occupancy:
Levels:
Cost:
Construction Dates:
72,400 Square Feet
Classrooms/Laboratories/Offices
3/Penthouse/Basement
$30 Million
March 2010 – January 2012
Architect:
Structural:
M/E/P/FP:
CM:
Cannon Design
Cannon Design
Cannon Design
Jacobs Project Management Co.
Nassau Community College Life Sciences Building
Mechanical Option
•Introduction
•
•Summary
•Life Sciences Building
•Mechanical System
•Depth 1: Decentralized Air System
•Depth 2: Chiller Plant Design
•Breadth 1: Daylighting
•Conclusion
•Acknowledgements
•Questions
Michael Reilly, Jr.
•
Campus High Temperature Hot Water – 270°F
• Heat Exchangers – 180°F
• Direct to Air Handling Units
•
Classrooms/Offices
• 25,550 CFM VAV with Terminal Reheat
•
Laboratories
• VAV with Supply Valves and Reheat
• Fume Hoods
• Glycol Heat Recovery Run-Around Loop
•
Laboratory Exhaust
• 3 Fans with a minimum discharge of 4,000 FPM
• Heat Recovery
Campus Chilled Water - 42°F
• Booster Pumps
• Direct to all coils
Nassau Community College Life Sciences Building
Mechanical Option
•Introduction
•
Offices
•
Classrooms
•Depth 1: Decentralized Air System
•Design
•Energy/First Cost
•Life Cycle
•Depth 2: Chiller Plant Design
•Breadth 1: Daylighting
•Conclusion
•Acknowledgements
•Questions
Michael Reilly, Jr.
• 100 ft2
• 9’-1” Ceiling
• 1 Occupant
Glass Curtain Wall
Nassau Community College Life Sciences Building
• 1,100 ft2
• 9’-1” Ceiling
• 36 Occupants
Glass Curtain Wall or
Window
Mechanical Option
•Introduction
•Depth 1: Decentralized Air System
•Design
•Energy/First Cost
•Life Cycle
•Depth 2: Chiller Plant Design
•Breadth 1: Daylighting
•Conclusion
•Acknowledgements
•Questions
Michael Reilly, Jr.
EA
11,210 CFM
OA
State 1
WB = 75.5 °F
MCDB = 81.9 °F
HR = 125.7 gr/lbm
D
E
S
I
C
C
A
N
T
DB = 75.0 °F
HR = 71.2 gr/lbm
State 6
State 2
State 2.1
C
L
G
State 3
DB = 49.1 °F
(saturated)
HR = 51.6 gr/lbm
H
T
G
Nassau Community College Life Sciences Building
S
E
N
S
I
B
L
E
State 5
RA
State 4
SA
DB = 55.0 °F
HR = 51.6 gr/lbm
Dew Pt = 49.1 °F
Mechanical Option
•Introduction
•
•Depth 1: Decentralized Air System
•
•Design
•
•Energy/First Cost
•Life Cycle
•Depth 2: Chiller Plant Design
•Breadth 1: Daylighting
•Conclusion
•Acknowledgements
•Questions
Michael Reilly, Jr.
Obtain design hourly cooling load predictions
Select Similar Pump/Fan model
Create regressions illustrating equipment
• Curve Model
•
•
Use regressions to determine power
Apply utility rate structure
Nassau Community College Life Sciences Building
Mechanical Option
•Introduction
Monthly CHW Pump Cost
•Depth 1: Decentralized Air System
$160.00
•Design
$140.00
•Energy/First Cost
Cost ($)
•Life Cycle
•Depth 2: Chiller Plant Design
•Breadth 1: Daylighting
•Conclusion
•Acknowledgements
•Questions
$120.00
$100.00
$80.00
VAV Pump
$60.00
CB Pump
$40.00
$20.00
$Month
Michael Reilly, Jr.
Nassau Community College Life Sciences Building
Mechanical Option
•Introduction
Monthly Fan Cost
•Depth 1: Decentralized Air System
$1,000
•Design
$875
•Energy/First Cost
Cost ($)
•Life Cycle
•Depth 2: Chiller Plant Design
•Breadth 1: Daylighting
•Conclusion
•Acknowledgements
•Questions
$750
$625
$500
VAV Fan
$375
DOAS Fan
$250
$125
$Month
Michael Reilly, Jr.
Nassau Community College Life Sciences Building
Mechanical Option
•Introduction
Monthly Energy Cost without Chilled Water
•Depth 1: Decentralized Air System
$1,120
•Design
$980
•Energy/First Cost
Cost ($)
•Life Cycle
•Depth 2: Chiller Plant Design
•Breadth 1: Daylighting
•Conclusion
•Acknowledgements
•Questions
$840
$700
$560
VAV System
$420
CB System
$280
$140
$Month
Michael Reilly, Jr.
Nassau Community College Life Sciences Building
Mechanical Option
•Introduction
Monthly Energy Cost with Chilled Water
•Depth 1: Decentralized Air System
$2,800
•Design
$2,450
•Energy/First Cost
Cost ($)
•Life Cycle
•Depth 2: Chiller Plant Design
•Breadth 1: Daylighting
•Conclusion
•Acknowledgements
•Questions
$2,100
$1,750
$1,400
VAV System
$1,050
CB System
$700
$350
$Month
Michael Reilly, Jr.
Nassau Community College Life Sciences Building
Mechanical Option
•Introduction
•
New Chilled Beam/DOAS - $1,000,000
• Smaller Air Handling Unit
• Less VAV Boxes
• Less Ductwork
• No Finned Tube Radiation
• Extra Piping
• Add Desiccant/Sensible Wheels
• Add Pump
•
20% Less First Cost
•Depth 1: Decentralized Air System
•Design
•Energy/First Cost
•Life Cycle
•Depth 2: Chiller Plant Design
•Breadth 1: Daylighting
•Conclusion
•Acknowledgements
•Questions
Michael Reilly, Jr.
Nassau Community College Life Sciences Building
•
Existing VAV with Terminal Reheat - $1,254,000
• Large Air Handling Unit
• Many VAV Boxes
• Much Ductwork
• Less Pumps
• Less piping
Mechanical Option
•Introduction
•
VAV with Terminal Reheat
• 30-year NPV: $1,628,000
•
Chilled Beam with Dedicated Outdoor Air System
• 30-year NPV: $1,470,000
•
9.7% Lower LCC with Chilled Beam/DOAS
•Depth 1: Decentralized Air System
•Design
•Energy/First Cost
•Life Cycle
•Depth 2: Chiller Plant Design
•Breadth 1: Daylighting
•Conclusion
•Acknowledgements
•Questions
Michael Reilly, Jr.
Nassau Community College Life Sciences Building
Mechanical Option
•Introduction
•Depth 1: Decentralized Air System
•Depth 2: Chiller Plant Design
•Design
•Energy/First Cost
•Life Cycle
•Breadth 1: Daylighting
•Conclusion
•Acknowledgements
•Questions
Michael Reilly, Jr.
•
Equipment
• Carrier 270 Screw Chiller
• Bell & Gossett Base-Mounted Pumps
• Marley Cooling Tower
Nassau Community College Life Sciences Building
Mechanical Option
•Introduction
•Depth 1: Decentralized Air System
•
•
•Depth 2: Chiller Plant Design
•Design
•Energy/First Cost
•Life Cycle
•Breadth 1: Daylighting
•Conclusion
•Acknowledgements
•Questions
Michael Reilly, Jr.
Obtain design hourly cooling load predictions
Create regressions illustrating equipment
•
•
•
•
Chiller - California Energy Commission
Cooling Tower/Pump - Curve Model
Use regressions to determine power
Apply electric rate structure
Nassau Community College Life Sciences Building
Mechanical Option
•Introduction
•Depth 1: Decentralized Air System
Monthly Cost For P/S and VPF Configurations
•Depth 2: Chiller Plant Design
$6,000
$5,000
•Energy/First Cost
$4,000
•Life Cycle
•Breadth 1: Daylighting
•Conclusion
•Acknowledgements
•Questions
Cost ($)
•Design
Primary/Secondary
Variable Primary Flow
$3,000
$2,000
$1,000
$-
Month
Michael Reilly, Jr.
Nassau Community College Life Sciences Building
Mechanical Option
•Introduction
•Depth 1: Decentralized Air System
•
Primary/Secondary - $243,000
• Extra set of pumps
• More Piping
•
Variable Primary Flow - $217,000
• Less Pumps
• Less Piping
• 11% decrease in first cost
•Depth 2: Chiller Plant Design
•Design
•Energy/First Cost
•Life Cycle
•Breadth 1: Daylighting
•Conclusion
•Acknowledgements
•Questions
Michael Reilly, Jr.
Nassau Community College Life Sciences Building
Mechanical Option
•Introduction
•Depth 1: Decentralized Air System
•
Primary/Secondary
• 30-year NPV: $1,231,000
•
Variable Primary Flow
• 30-year NPV: $1,161,000
•
6% Lower LCC with VPF
•Depth 2: Chiller Plant Design
•Design
•Energy/First Cost
•Life Cycle
•Breadth 1: Daylighting
•Conclusion
•Acknowledgements
•Questions
Michael Reilly, Jr.
Nassau Community College Life Sciences Building
Mechanical Option
•Introduction
•Depth 1: Decentralized Air System
•Depth 2: Chiller Plant Design
•Breadth 1: Daylighting
•Objective
•
•
Life Sciences Building Design Goals
LEED Credit 8.1
• 75% of regularly occupied spaces between 25 fc and 500 fc.
• September 21 at 9am and 3pm
•Analysis
•Conclusion
•Acknowledgements
•Questions
Michael Reilly, Jr.
Nassau Community College Life Sciences Building
Mechanical Option
•Introduction
•Depth 1: Decentralized Air System
•Depth 2: Chiller Plant Design
•
•
•
September 21st
9 am
1st floor
•Breadth 1: Daylighting
•Objective
•Analysis
•Conclusion
•Acknowledgements
•Questions
Michael Reilly, Jr.
N
Nassau Community College Life Sciences Building
Mechanical Option
•Introduction
•Depth 1: Decentralized Air System
•Depth 2: Chiller Plant Design
•
•
•
September 21st
9 am
2nd floor
•Breadth 1: Daylighting
•Objective
•Analysis
•Conclusion
•Acknowledgements
•Questions
Michael Reilly, Jr.
N
Nassau Community College Life Sciences Building
Mechanical Option
•Introduction
•Depth 1: Decentralized Air System
•Depth 2: Chiller Plant Design
•
•
•
September 21st
3 pm
1st floor
•Breadth 1: Daylighting
•Objective
•Analysis
•Conclusion
•Acknowledgements
•Questions
Michael Reilly, Jr.
N
Nassau Community College Life Sciences Building
Mechanical Option
•Introduction
•Depth 1: Decentralized Air System
•Depth 2: Chiller Plant Design
•
•
•
September 21st
3 pm
2nd floor
•Breadth 1: Daylighting
•Objective
•Analysis
•Conclusion
•Acknowledgements
•Questions
Michael Reilly, Jr.
N
Nassau Community College Life Sciences Building
Mechanical Option
•Introduction
•Depth 1: Decentralized Air System
•Depth 2: Chiller Plant Design
•Breadth 1: Daylighting
•Objective
•
Conclusion
• 1st floor, 9am – non-compliant
• 73% at 9am
• 82% at 3pm
•Analysis
•Conclusion
•Acknowledgements
•Questions
Michael Reilly, Jr.
Nassau Community College Life Sciences Building
Mechanical Option
•Introduction
•Depth 1: Decentralized Air System
•Depth 2: Chiller Plant Design
•Breadth 1: Daylighting
•
Decentralized Air System
• $254,000 decrease in first cost
• 20% higher annual energy cost
• 9.7% smaller LCC
•
P/S vs. VPF
• $26,000 decrease in first cost with VPF
• 5% decrease in annual energy cost with VPF
• 6% smaller LCC with VPF
•Conclusion
•Acknowledgments
•Questions
Michael Reilly, Jr.
Nassau Community College Life Sciences Building
Mechanical Option
•Introduction
•Depth 1: Decentralized Air System
•Depth 2: Chiller Plant Design
•Breadth 1: Daylighting
•Conclusion
•
•Acknowledgements
•
•Questions
•
•
•
•
•
•
•
•
Michael Reilly, Jr.
Dr. James Freihaut
Dustin Eplee
Jan Gasparec
Eric Lindstrom
Mike Kirkpatrick
Dr. William Bahnfleth
Dr. Jelena Srebric
Moses Ling
Michael Reilly Sr.
AE Friends
Faculty Advisor, Penn State
Faculty Advisor, Energy Wall
Mechanical Engineer, Cannon Design
Mechanical Engineer, Cannon Design
Electrical Engineer, Cannon Design
Mechanical Instructor, Penn State
Mechanical Instructor, Penn State
Mechanical Instructor, Penn State
Owner, Reilly Plumbing & Heating
Nassau Community College Life Sciences Building
Mechanical Option
•Introduction
•Depth 1: Decentralized Air System
•Depth 2: Chiller Plant Design
•Breadth 1: Daylighting
•Conclusion
•Acknowledgements
•Questions
Michael Reilly, Jr.
Nassau Community College Life Sciences Building
Mechanical Option
Primary/Secondary
Variable Primary Flow
Cooling
Tower
Cooling
Tower
P-12
P-13
P-12
Condenser
Condenser
Evaporator
Evaporator
CH-1
P-15
P-14
CH-1
P-19
P-18
Bypass
Low-Flow Bypass
P-16
Life Sciences
Building Loads
P-17
Life Sciences
Building Loads
P-13
Chilled Beam Chilled Water Pumping Schematic
Dedicated Outdoor Air Unit Schematic
EA
11,210 CFM
OA
State 1
WB = 75.5 °F
MCDB = 81.9 °F
HR = 125.7 gr/lbm
h = 39.1 Btu/lbm
D
E
S
I
C
C
A
N
T
DB = 69.1 °F
HR = 71.2 gr/lbm
h = 27.8 Btu/lbm
DB = 75.0 °F
HR = 71.2 gr/lbm
h = 29.1 Btu/lbm
State 6
State 2
DB = 70.9 °F
HR = 80.2 gr/lbm
h = 29.6 Btu/lbm
State 2.1
DB = 72.9 °F
HR = 80.2 gr/lbm
h = 31.0 Btu/lbm
C
L
G
State 3
DB = 49.1 °F
(saturated)
HR = 51.6 gr/lbm
h = 19.8 Btu/lbm
H
T
G
S
E
N
S
I
B
L
E
State 5
RA
State 4
SA
DB = 55.0 °F
HR = 51.6 gr/lbm
h = 19.7 Btu/lbm
Dew Pt = 43.9 °F
Architectural Breadth/ Daylight Shading
Chiller Plant Location
DOAS Pump Curve
DOAS Unit Fan Curve