Heat Pumps: Difference between revisions
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*They can go up to 180C output, using water as the refrigerant. [https://www.ammonia21.com/articles/10124/norwegian_researchers_develop_world_s_hottest_heat_pump] | *They can go up to 180C output, using water as the refrigerant. [https://www.ammonia21.com/articles/10124/norwegian_researchers_develop_world_s_hottest_heat_pump] | ||
*COP is 3-4 in geothermal, but air heat pump drops down from 5 to 1 in low temps. [https://www.nordicghp.com/2017/01/heat-pump-effective-temperature-range/] | *COP is 3-4 in geothermal, but air heat pump drops down from 5 to 1 in low temps. [https://www.nordicghp.com/2017/01/heat-pump-effective-temperature-range/] | ||
[[Category: HVAC]] | |||