A method of primarily testing and performance controlling heat pumps, refrigerating installations or corresponding systems, at which system thermal energy from at least one heat source (K) is supplied to an energy-carrying medium (1), a refrigerant, which circulates in the system and is advanced therein...http://www.google.com/patents/US4611470?utm_source=gb-gplus-sharePatent US4611470 - Method primarily for performance control at heat pumps or refrigerating installations and arrangement for carrying out the method
