Ayres also provided design for Mayo Clinic Health System ’ s Diagnostic Imaging and Sports Medicine Center , an $ 11 million facility that is attached to the complex . The Mayo facility will operate independently and will use its own HVAC system .
CMC Geothermal System
The CMC ’ s design achieves significant energy cost savings and environmental protections that in many respects go well beyond the requirements for LEED certification , said David Delfosse , vice president of Ayres ’ Architecture Division .
Subconsultant Stok ’ s energy modeling report states that the CMC design will deliver 24 % energy cost savings compared to what would be delivered by a baseline building , which means an equivalent building meeting the bare minimum requirements of ASHRAE 90.1-2010 Appendix G .
Going the extra 36 miles for energy savings
The star of the CMC ’ s energy-saving show is a geothermal system involving 190 vertical geothermal wells that plunge 500 feet under the CMC ’ s parking lot – a depth roughly equaling the height of a 40-story building . Tubing inside each well carries fluid ( mostly water ) down through 100 feet of loose material and then 400 feet of bedrock , tempering it as it flows through the approximately 55 degree bedrock , and then carries it back up a parallel tube to be returned to the CMC ’ s mechanical room . There , electric heat pumps finish the job of adding heat during the winter or subtracting heat during the summer and circulating the fluid through the HVAC system
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