1. Federal Reserve Bank of Boston Case Study
John Yahoodik, Senior Project Manager Federal Reserve Bank of Boston
Rick Dorricott, Design Services Manager Energy Investment, Inc.

2. Federal Reserve Bank of Boston
Designed 1972, completed 1976
33 story tower; 5 story low-rise
Unique support functions
1,130,000 square feet
Steel construction with glass & aluminum facades
Steam heating
Electric powered chiller cooling

3. Federal Reserve Bank of Boston Project Objectives
Energy efficiency, utility cost reduction
Facility improvement, lighting and mechanical systems
Environmental management, CFC compliance

4. Federal Reserve Bank of Boston Owner’s Agent: Energy Investment, Inc.
Integrated energy improvement program
Chiller replacement program
chiller specification and selection
system design
competitive bidding
construction review

5. Federal Reserve Bank of Boston Electric End-Use
General office and banking
5 am - 6 pm weekdays
7 am - 1 pm weekends
some 24 hour operation
24,000,000 kWh annual electricity consumption

6. Federal Reserve Bank of Boston Electricity Use
Monthly electricity consumption
Monthly electricity demand
relatively flat demand

7. Federal Reserve Bank of Boston Natural Gas and Steam Use
Monthly natural gas consumption
used for cooking
Monthly steam consumption
used for heating

8. Federal Reserve Bank of Boston Original Chillers
3 York 1200 ton chillers
0.82 kW/ton
R-500 refrigerant
chiller 2 on in spring
chiller 3 for summer loads
chiller 1 used for backup
8 heat recovery chillers
tons, 330 tons total
R-22 refrigerant
kW/ton
summer and winter loads
heat recovered for hot water

9. Federal Reserve Bank of Boston Chiller Replacement - Logistical Issues
Bank Security
On-going operations
Time constraints
Space constraints
Future flexibility
Facility location

10. Federal Reserve Bank of Boston Chiller Options Studied for CFC Compliance
Retrofit existing chillers for non-CFC refrigerant
Replace with high-efficiency, non-CFC models
Steam absorption units
Gas-fired units
District cooling

11. Federal Reserve Bank of Boston Criteria for Evaluating Options
Reliability, long life
Stand-alone entity
Independent operation
Energy efficiency and performance
Life-cycle cost
Operation and maintenance considerations
Environmentally friendly, CFC compliance

12. Federal Reserve Bank of Boston Chiller Replacement Option Chosen
Primary chillers - 3 Carrier 1200 ton chillers
0.56 kW/ton
R-134a refrigerant
Heat recovery chillers - 8 Carrier

13. Federal Reserve Bank of Boston HVAC Improvements

14. Federal Reserve Bank of Boston Lighting Improvements
Upgraded fluorescent lighting
Specular reflectors
High efficiency incandescent lamps
New LED exit kits
Metal halide retrofit kits
Incandescent converted to fluorescent

15. Federal Reserve Bank of Boston Lighting Improvement Results

16. Federal Reserve Bank of Boston Integrated Energy Program
Other energy efficiency improvements help pay for chiller replacement for CFC compliance
Shorter overall program payback period

17. Federal Reserve Bank of Boston Project Timeline
8 months for engineering analysis
18 months for project approval
21 months to purchase, design and build

18. Federal Reserve Bank of Boston Five Construction Phases
Remove chillers 2 & 3
Install & activate new chiller 2 & refrigerant monitoring system
Remove chiller 1
Install and activate chillers 1 & 3
Remove heat recovery chillers 4 & 5 and install new ones

19. Federal Reserve Bank of Boston Project Results
Still under construction
Expect to save 5,300,000 kWh a year
Annual $730,000 savings
Switch to R-134a, an HFC refrigerant, not scheduled for phaseout
Improved lighting and HVAC systems
Only a 5 year project payback period