Question: What can make both ice and heat and reduce Michigan Technological University’s carbon footprint while doing so?
Answer: Michigan Tech’s new ice-making system at the John J. MacInnes Student Ice Arena. The ammonia brine-based system not only makes ice for the hockey rink, it heats the rink’s sub-floor, preventing frost from forming under the insulated concrete slab. Heat generated as the ammonia is compressed to be used as a refrigerant heats 100 percent of the hot water used in the arena and maintains a comfortable water temperature for the nearby swimming pool and dive tank.
Michigan Tech replaced its ice-making system last summer, removing the building’s original Freon 22 direct system and installing an ammonia brine indirect system.