Michigan Energy Summit | April 25, 2019 Michigan Battle of the Buildings Campus-wide Geothermal System Presentation Michigan Energy Summit | April 25, 2019

H eating V entilation A ir- C onditioning

WHY THE NEED FOR NEW HVAC SYSTEMS? Failing equipment

LIFE CYCLE ANALYSIS |EXISTING HVAC SYSTEMS HEATING SYSTEM: Boilers [BR’s100, 200, 300]: 1978 Life expectancy: 20 years Bonus years: 17 years COOLING SYSTEM: Cooling tower, boiler, underground piping: 1968 Life Expectancy: 20 years Bonus years: 27 years Absorber [re-furbished]: 2002 Life expectancy: 15 years max. Bonus years: 0 years [equip. failed] VENTILATION SYSTEM: Fan units: 1968

HVAC

HVAC

HVAC

HVAC

HVAC

CONVENTIONAL SYSTEM Replacement with Conventional Systems New boilers [two options]: Hot-Water Boilers: More efficient Will have to convert current system over to accept new format Steam Boilers: Some efficiency based on newest technologies Steam trap maintenance still an issue

Air-Cooled Centrifugal Chillers CONVENTIONAL SYSTEM Replacement with Conventional Systems New chillers: Air-Cooled Centrifugal Chillers Gained efficiency based on newest technologies Replaces absorber and boiler Heat Exchange Unit Replaces the current cooling towers

CONVENTIONAL SYSTEM Replacement with Conventional Systems New air-handling units: Air-Handling Unit: More efficient with newer drives Need to be replaced whatever system we decide on

GEOTHERMAL How does it work? SUMMER WARM WATER COLD WATER 55°

GEOTHERMAL | WELL FIELD Approximate area and location of geothermal well field: 288 wells @ 350 feet deep field size 2.18 acres Modular design makes it easier to expand

Centralized Geothermal Actual Geothermal Well Field Administration/Student Services Building Campbell Learning Resource Center Centralized Geothermal Well Field Actual Geothermal Well Field [smaller due to commodity] East Tech West Tech Life Sciences Building

GEOTHERMAL | FEED LOOPS

GEOTHERMAL | FEED LOOPS

GEOTHERMAL | FEED LOOPS DIVERSITY

BENEFITS OF SUSTAINABILITY Values of a geothermal system over conventional: Well field life span = 50 years+ (double the life of a conventional system) Significant reduction to our greenhouse gas emissions by over 2,000 metric tons or the equivalent of converting approximately 100 cars to electric or planting 200 acres of trees (electric vs. natural gas) The College began its commitment to sustainable systems and green technologies with the construction of the CTC. A geothermal HVAC system is the next logical step in our plan for an environmentally responsible campus.

WHY PERFORMANCE CONTRACTING? Energy savings is what they do! RFQ process / selection committee Access to quality engineering and design services up front for all systems Design/build contract “One-stop” shop Value engineering Designs based on first-hand knowledge of the operators – employee input on systems Emphasis on local contractors GUARANTEED SAVINGS!

INSTALLATION PROGRESS PHOTOS Well drilling and piping installation

INSTALLATION PROGRESS PHOTOS Feed loop pipe assembly and installation

INSTALLATION PROGRESS PHOTOS Well circuit and vault installation

INSTALLATION PROGRESS PHOTOS Demolition of old equipment

INSTALLATION PROGRESS PHOTOS Asbestos abatement

INSTALLATION PROGRESS PHOTOS Temporary equipment

INSTALLATION PROGRESS PHOTOS Well field, feed loop, and building pump installation

INSTALLATION PROGRESS PHOTOS Chiller/heater, boiler, and controls installation

INSTALLATION PROGRESS PHOTOS Air-handling unit, ductwork installation

INSTALLATION PROGRESS PHOTOS Electrical equipment, and ceiling installation

BUILDING LOGISTICS | TEMPORARY OFFICES early July thru late Sept. 10 days abatement late July thru early Sept. 8 days abatement early May thru late July 10 days abatement mid June thru late August 7 days abatement

Temporary Office Plans | La-Z-Boy Center Admissions Financial Aid Registrar Upward Bound 259 HR/Security Business Office 246 258 July 1st – Sept. 16th* Data Processing 245 260 Marketing/Foundation 257 Information Systems Administration Office Administration Support Support Spaces 273 *Data Processing moves in May 2nd and leaves July 29th. 274 286 275 286d 221

INSTALLATION PROGRESS PHOTOS Temporary offices/relocation logistics

THE NUMBERS 2: The number of years the project took to complete. $16.1 million: The cost of the project, which was financed by MCCC over 20 years. 50: The lifespan on the system’s well field. This is double the lifespan of a conventional system. 5: The number of Main Campus buildings served by the new system. 288: The number of wells that supply the system’s distribution loop. 350-400: The approximate depth in feet of each of the wells. 10,000: Gallons of water that were pumped in from the college’s connection to the city water system to supply the system (a “closed-loop” that does not use groundwater). 160,000: Guaranteed reduction in kilowatt hours of energy used annually by MCCC.

THE NUMBERS [cont.] $5.5 million: Guaranteed savings by MCCC in electricity, gas and water costs over 20 years. This figure will likely be much higher. $275,000: Average guaranteed savings per year by MCCC in electricity, gas and water. This figure will likely be much higher. 1,088: Metric tons of carbon emissions reduced annually by MCCC. Based on the Environmental Protection Agency’s Greenhouse Gas Equivalencies Calculator, the annual green benefit from this reduction each year is equal to: 2.6 million road miles driven by an average passenger vehicle 120,176 gallons of gasoline consumed 1.14 million pounds of coal burned 113 homes’ energy use for one year 27,678 tree seedlings grown 1,011 acres of U.S. forests

Who has the first question?

Michigan Energy Summit | April 25, 2019 Michigan Battle of the Buildings Campus-wide Geothermal System Presentation Michigan Energy Summit | April 25, 2019