Absorption heat pumps use an ammonia-water absorption cycle, in lieu of a vapor-compression cycle, to transfer heat. Ammonia would be the refrigerant, and h2o will be the absorber. The ammonia condenses at on the list of method’s coils to launch heat and evaporates at the opposite coil to soak up https://purethermal.co.uk/media-news/can-gas-absorption-heat-pumps-provide-an-alternative-heat-pump-option-in-2025/