Case Studies of Federspiel Implementations
Data Centers
Franchise Tax Board
Site Description
- 10,000 SF
- Production facility
- 12 CRAH’s (22 tons each)
- 40% built out
- Raised floor
- Virtualized servers
The Solution
- 50 wireless server inlet temperature sensors
- 4 VFDs installed
- Intelligent control software
- Reset setpoints of CRAH’s
- Automatic stop–start of CRAH’s
Energy Savings
- 310,000 kWh/year saved, verified
- 415,000 pounds of CO2/year reduced
- $27,900/year saved ($0.09/kWh)
- 14.6% reduction of total data center energy usage
- 58% reduction in fan energy usage
View the Lawrence Berkeley National Lab third party case study on the Franchise Tax Board implementation.
Data Centers Case Study 2
Site Description
- 5,000 SF
- 6 CRAH’s (chilled water, 22 tons each)
- 130 racks
- 1.8m kWh annual energy usage
The Solution
- 48 wireless server inlet temperature sensors
- 6 VFDs installed
- No other efficiency measures taken
- One–day installation
Energy Savings
- 300,000 kWh/year saved, verified
- 218,000 kWh/year fan savings
- 82,000 kWh/year chiller savings
- 400,000 pounds of CO2/year reduced
- $27,000/year saved
- 17% reduction of total data centers energy usage
- 80% reduction of fan energy
- CERTIFIED!
Buildings
UC Santa Barbara
Site Description
- Four buildings, eight AHUs
- Constant volume dual–duct HVAC converted to VAV (variable–air volume)
- 285 wireless modules
- 10 working days to install
Energy Savings
- Identified terminal boxes failed to the hot deck or cold deck
- 574,000 kWh/year saved
- 25,000 therms/year saved
- 1,060,000 pounds of CO2/year reduced
- 35% fan energy savings
- 2.6 year payback before rebates
Request an independent, third party case study of this project using the form to the right.
Buildings Case Study 2
Site Description
- 35,000 SF building
- Five floors
- Constant volume reheat HVAC converted to VAV
- Extensive asbestos
- Zone sensors on wall plates
- 74 sensors total
- 6–hour installation
Energy Savings
- Identified hot zones
- 114,900 kWh/year estimated savings
- 5,300 therms/year estimated savings
- 215,000 pounds of CO2/year estimated reduction
- 35% fan energy savings
- 2.2 yr payback before rebates
- CERTIFIED!
