2012 ISCN Symposium - Energy Optimization at Central Michigan University 2012
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Transcript of 2012 ISCN Symposium - Energy Optimization at Central Michigan University 2012
• Completed 11 Buildings
• Before: 43,800 watts
• After: 7,592 watts
• Total wattage reduction – 83%
• Annual Savings: $26,318
Alumni House Anspach Hall Dow Science
Grawn Hall Moore Hall Rowe Hall
University Center Warriner Hall Campbell Hall
Kesseler Hall Kulhavi Hall
Replace incandescent bulbs
with LED lights – Kesseler,
Kulhavi & Campbell Halls
Rebate for $600 has been submitted
# LightsReplaced
Location Change PercentReduction
42 Hallways 90 watt to 8 watt 91%
18 Deskareas
20 watt to 6 watt
70%
# Lights Replaced
Location Change Percent Reduction
107 Auditorium, Extended Hrarea, Elevators
50 watt incandescent to 6 watt LED
88%
Park Library
Filed for Rebate
Replaced T-12
lights to more
energy efficient T-8
lights in ET Building
Total Cost: $108,499
Savings/Yr: $35,385
Rebate: $20,035
ROI: 40%
Currently replacing lights
in Grounds South Building
Installed motion sensors for interior
lighting in classrooms, hallways,
auditoriums and restrooms.
Anspach Dow Foust ET Grawn IAC Moore Music Pearce
Cost $28,500 $75,541 $32,884 $12,376 $23,260 $24,509 $60,000 $25,400 $30,500
Estimated
Annual
Savings
$7,198 $33,425 $9,500 $8,400 $7,000 $5,800 $20,000 $6,800 $7,625
ROI 32% 58% 31% 86% 41% 28% 37% 36% 30%
Rebate $5,767 $18,659 $2,542 $2,570 $6,322 $3,377 $9,001 $6,640 $5,219
Installing computer
Power Save software
throughout campus. To
date, 2,147 copies of
software in use.
Funded by Facilities
Management – Implemented
by Information Technology
Cost $28,000
Estimated Annual Savings $100,000
ROI 350%
Replaced old pneumatic thermostats with wireless radio controlled
Building Complete: ET Building & Central Energy Facility
Cost: $28,934 Estimated Annual Savings: $7,000 ROI – 24%
Installed 2,330
radiator valves in
Merrill Quad, Robinson
Quad & the Towers
Cost $394,743
Estimated Annual Savings
$159,077
ROI 48%
Rebate $61,785
• Monitors Carbon
Dioxide (CO2)levels in
occupied spaces
• Work completed by
HVAC Department
• 98% of campus
buildings complete
• Average cost each air
handler - $700
• ROI – less than 1 year
or 100%
Reduce kitchen
hood exhaust rate
in all dining
commons
Cost $50,000
Potential Energy Savings
$26,534
ROI 53%
Installed 0.5 gpm aerators on 4,500 faucets
throughout campus
Cost $9,000
Estimated Annual Savings $58,000
ROI 640%
Installed low flow flush valves on toilets &
urinals throughout campus (650 toilets & 220 urinals)
Cost $17,500
Estimated Annual Savings $11,250
ROI 65%
Campus Aerator & Flush Valve
Installation
•The steam absorption chiller
produces chilled water for cooling.
•Steam is produced by the wood
fueled boiler—a renewable resource
•Displaces an electric powered chiller
•Higher steam demands allow more
electric generation
Cost $45,000
Estimated Annual Savings $584,000
ROI 1,298%
• Energy Rebates Received FY 11 - $99,365• Consumers Energy
• DTE/Mich Con
• Alternative Fuels• Biomass (Wood)- Wood vs. natural gas cost avoidance since
started in 2001 $10,679,000. Yearly average - $1,525,600
• Geo-thermal – Installed system for Academic Center on
Beaver Island compared to heating with fuel oil
• FY to date cost avoidance $33,570
• Solar – Installed 64 evacuated tub solar panels on the EHS
building roof. Lowers Carbon Footprint by 45 metric tons.
Estimated annual savings: $25,000
Started 3.2 MW GasTurbine/Generator
• Lowers Carbon Footprint by 11% or 9,500
metric tons by self-generating 55-60% of
total campus electric requirements
• November 2010 – October 2012
estimated savings - $800,000
Currently negotiating electric contract
extension for 2013 and 2014 with estimated
cost avoidance of $290,000 vs. the 2012
rate