2011 National Grid Energy Expo
Energy Management Systems
April 7, 2011
Assis Flores
Account Executive
assis.m.flores@jci.com
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2011 National Grid Energy Expo
Proprietary & Confidential
What are the challenges?
Efficiency has never been more important
 Operating budgets are under
pressure
 Organizations are under pressure
to reduce energy use. According to the widely published
IFMA Energy Efficiency Indicator :
 Energy costs are increasing
 65% are
more
attention to energy efficiency now than they did 1 year ago.
 Demand
forpaying
energy
is increasing.
 97%must
rate energy
cost savings
 Plants
be maintained
to as the most important factor influencing their
increased
stay
efficientattention to energy efficiency.
 75% believe significant legislation mandating energy efficiency and/or carbon
 Plants must be retrofitted to get
reduction is likely within the next 2 years.
more efficient.
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2011 National Grid Energy Expo
The Building Real Lifecycle Cost
Integrated Design, Build, Operate
Auto
Commission
Perpetual
Commissioning
Existing Practices
Design Service Live
Optimum “As Built”
Peak Performance
First Occupancy
Performance
Intended
Performance
Minimum Acceptable
Performance
Actual Service Live
Time
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2011 National Grid Energy Expo
Industry Energy Savings Benchmarks
System Commissioning
20%
 Complex systems are running
“Beta” configurations
5-7%
Real Time Feedback
 Integrated reporting and billing
 Behavior change – “Turn the lights out”
 Visual feedback – Kiosks
5-7%
Advanced Controls
 Whole system optimization
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2011 National Grid Energy Expo
Industry Energy Savings Benchmarks - Maintenance
Real-Time Monitoring
20%
 Continuously monitor faults/alarms
 Apply best practice
 Service level agreements
 No Truck Rolls
Integrated Supply Chain
 Automatically order parts
 Reduce on-site inventory
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2011 National Grid Energy Expo
20%
What are the EMS strategies?
Basic Strategies
 Time Scheduling
 Optimum Start and Stop
 Night set-back
 Peak Demand Limiting
Advanced Strategies
 Chiller and Boiler Plant Optimization
 Morning Warm-up/Cool-Down
 Night Purge
 Load Resetting
 CO2 Demand Ventilation
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2011 National Grid Energy Expo
Plant Optimization
For a
Greener World
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Johnson Controls
2011 National Grid Energy Expo
Proprietary & Confidential
Chiller plants are one of the largest energy savings opportunities
Typical commercial building energy usage profile
Chiller Plant
Energy Use
Total HVAC
Energy Use
Total Building
Energy Use
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2011 National Grid Energy Expo
Design decisions are the foundation of potential plant efficiency
Automation of system
Application of components
Design
Decisions
Selection of system components
Design of system infrastructure
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2011 National Grid Energy Expo
Operating decisions can build upon the foundation of
design decisions to enhance potential plant efficiency
Measurement , Verification, Management
Maintenance
Operating Decisions
Optimization
Automation of system
Application of components
Design
Decisions
Selection of system components
Design of system infrastructure
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2011 National Grid Energy Expo
Design and Operating Decisions
A plant with room to improve
Chiller Plant Efficiency Scale (kw/ton)
No tracking of data or reporting
No optimization
Reactive maintenance
Manual control of plant
Improperly applied equipment
Minimum efficiency equipment
All constant speed plant
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2011 National Grid Energy Expo
A fully-featured EMS is a prerequisite to excellent plant efficiency.
 Beyond starting and stopping
equipment.
 Intelligent equipment selection
and operation; continuous
adaptive tuning algorithms
 Standard protocols such as
BACnet help assure info
transparency and flow
 Information presented at the
right level of detail, at the right
place, at the right time.
 Information helps realize
efficiency potential & sustain it
EMS makes an ideal platform for plant efficiency
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2011 National Grid Energy Expo
But, efficient and capable components can get you only so far.
Variable
Speed
Drives
Automation &
Optimization
Cooling
Towers
Chillers
Pumps & Motors
To maximize efficiency, plants should be designed and
operated holistically
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2011 National Grid Energy Expo
Central Plant Optimization
MVM software for persistent performance
Prevent system degradation with
performance measurement, verification
and management service

Web-based for 24/7 access to real-time
and historical performance information

Data presented in easy-to-read graphs,
charts and plant overview display

Operators have immediate visibility to
inefficient system operation.

Analysis capabilities enable fast system
fault diagnosis

Simplified reporting with at-a-glance
energy dashboard and reports
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2011 National Grid Energy Expo
Design and Operating Decisions
A best-in-class plant
Chiller Plant Efficiency Scale (kw/ton)
Real-time measurement & dashboard
reporting; fault analysis
Full optimization program
Predictive maintenance
Demand-based relational control
Best-in-class equipment application
High efficiency equipment
All variable speed plant
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2011 National Grid Energy Expo
EMS
Systems
Case Studies of:
Chiller Plant
Optimization
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Johnson Controls
2011 National Grid Energy Expo
Proprietary & Confidential
Energy Case Study:
Sotheby’s Building
Situation
 470,000 sq. ft. facility in New York City
 Houses rare antiques & priceless art
 Needed a reliable, efficient chiller plant
Solution
 VSD retrofits on two 700-ton York
centrifugal chillers, cooling tower fans,
condenser water pumps and chilled water
pumps.
 Implemented Central Plant Optimization.
Result
 Qualified for incentives: $167,000
 Est. first year savings: $201,000
 To-date improved kW/ton: 30%
 Simple payback for the entire project: 3.6
yrs
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2011 National Grid Energy Expo
Johnson Controls/Optimum Energy Case Study:
University of Texas at Austin
Situation
 District Cooling station serving 135 buildings
(17 million sq ft )
 Total campus load:145 million ton-hours / year
 Rising energy prices, increasing cooling load
Solution
 Replaced plant with a new, all-VSD plant
 Installed 3 new 5000 ton York Titan chillers
 Johnson Controls / OptimumLOOP
Result
 Plant efficiency: 0.33 to .87 kW/ton ,
depending on wet bulb and campus load
 Estimated first year savings: 5 million kWh
 Simple payback for LOOP install: 12 months
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2011 National Grid Energy Expo
Questions & Answers
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