2012 ISCN Symposium - Energy Optimization at Central Michigan University 2012

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  • 1. • Completed 11 BuildingsAlumni House Anspach Hall Dow ScienceGrawn Hall Moore Hall Rowe HallUniversity Center Warriner Hall Campbell HallKesseler Hall Kulhavi Hall • Before: 43,800 watts • After: 7,592 watts • Total wattage reduction – 83% • Annual Savings: $26,318
  • 2. Replace incandescent bulbs with LED lights – Kesseler, Kulhavi & Campbell Halls # Lights Location Change Percent Replaced Reduction 42 Hallways 90 watt to 8 watt 91% 18 Desk 20 watt to 6 70% areas watt Rebate for $600 has been submitted Park Library# Lights Location Change PercentReplaced Reduction107 Auditorium, 50 watt 88% Extended Hr incandescent to 6 area, Elevators watt LED Filed for Rebate
  • 3. Replaced T-12lights to moreenergy efficient T-8lights in ET BuildingTotal Cost: $108,499Savings/Yr: $35,385Rebate: $20,035ROI: 40%Currently replacing lightsin Grounds South Building
  • 4. Installed motion sensors for interior lighting in classrooms, hallways, auditoriums and restrooms. Anspach Dow Foust ET Grawn IAC Moore Music PearceCost $28,500 $75,541 $32,884 $12,376 $23,260 $24,509 $60,000 $25,400 $30,500Estimated $7,198 $33,425 $9,500 $8,400 $7,000 $5,800 $20,000 $6,800 $7,625AnnualSavingsROI 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
  • 5. Installing computerPower Save softwarethroughout campus. Todate, 2,147 copies ofsoftware in use.Cost $28,000Estimated Annual Savings $100,000ROI 350%Funded by FacilitiesManagement – Implementedby Information Technology
  • 6. Replaced old pneumatic thermostats with wireless radio controlledBuilding Complete: ET Building & Central Energy FacilityCost: $28,934 Estimated Annual Savings: $7,000 ROI – 24%
  • 7. Installed 2,330radiator valves inMerrill Quad, RobinsonQuad & the TowersCost $394,743Estimated $159,077Annual SavingsROI 48%Rebate $61,785
  • 8. • 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%
  • 9. Reduce kitchen hood exhaust rate in all dining commonsCost $50,000Potential Energy $26,534SavingsROI 53%
  • 10. Campus Aerator & Flush Valve InstallationInstalled 0.5 gpm aerators on 4,500 faucetsthroughout 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%
  • 11. •The steam absorption chillerproduces chilled water for cooling.•Steam is produced by the woodfueled boiler—a renewable resource•Displaces an electric powered chiller•Higher steam demands allow moreelectric generationCost $45,000Estimated Annual Savings $584,000ROI 1,298%
  • 12. • 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
  • 13. 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 - $800,000Currently negotiating electric contractextension for 2013 and 2014 with estimatedcost avoidance of $290,000 vs. the 2012rate