Geothermal Heat Pumps: The Next Generation
By Tom Konrad, Contributor
June 6, 2012
Climatemaster, a division of LSB Industries (NYSE:LXU), recently announced that their new Trilogy 40 geothermal heat pump (GHP) had been certified by the Air Conditioning, Heating, and Refrigeration Institute (AHRI) to exceed 40 Energy Efficiency Ratio (EER) under ground loop conditions.
EER is the ratio of effective cooling (heat removed) to the energy used, at maximal load, and is the standard measure of cooling effectiveness for geothermal heat pumps. A quick perusal of the list of Energy Star qualified GHPs shows just how big a leap this is: the highest EER rating currently available is 30, and many Energy Star qualified heat pumps have EERs as low as 17. So the Trilogy 40 is a third again as efficient for cooling as the most efficient commercially available GHP, and more than twice as efficient as some Energy Star qualified GHPs.
Image: Geothermal Heat Pump Diagram via Bigstock
Scott Lankhorst, President of Synergy Systems, a GHP installer in Kingston, NY, called the jump in efficiency pretty amazing
30 EER has been the max for quite a while now. Lankhorst says that Climatemaster hopes to have the Trilogy 40 in full production by the end of the year.
According to Barry Golsen, President and COO of LSB, the Trilogy 40 will also have improved heating performance, with a Coefficient of Performance (COP, the industry measure of heating efficiency) of 5 at ground loop conditions. This is also a significant increase, with the best GHPs in the Energy Star list having COPs of 4.1.
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