Method for generating simultaneous heating and cooling operations has a double compressor unit and switching facility for one or other or both functions

摘要

The compressor unit (1), operating with ammonia refrigerant, has a low pressure first stage (21) having an evaporator (12) and separator (4) and a spray nozzle (13) in a second separator (2). The high pressure second stage (22) has a condenser (8) to the hot water circuit.