Refrigerant circuit for a reverse cycle heating system has a compressor, a condenser, a vaporizer and an expansion valve

摘要

First (11) and second (11') vaporizers fit in a circuit. Acting as a defrosting device, a refrigerant from a condenser flows through and is fed afterwards to a vaporizer that serves to pick up energy. Systems arranged in parallel are operated on alternate sides by a corresponding circuit for allocated valves.