Absorption heat pumps use an ammonia-drinking water absorption cycle, in lieu of a vapor-compression cycle, to transfer heat. Ammonia could be the refrigerant, and h2o could be the absorber. The ammonia condenses at among the list of process’s coils to launch heat and evaporates at another coil to absorb heat. https://thebookpage.com/story5753756/5-essential-elements-for-heat-pumps