Heating by reversed refrigeration

The elements of reversed refrigeration, a method by which heating may be accomplished, are to be found in all refrigerating and air-conditioning systems. In reversed refrigeration the heat derived from the motor and the compressor and from the substance cooled — air or water — is utilized. The method is particularly applicable in industrial plants requiring refrigeration throughout the year, where the relatively hot condenser-cooling water now being wasted might be salvaged for heating purposes. Two industrial reversed-refrigeration plants now in successful operation are described here.