A heat pump system for buildings has connections to an underground heat exchanger and a heating circuit in which a third circulation circuit is provided

摘要

The earth heat exchanger (100) connects to a first circuit (30) having a pump (31), three-way valve (34) and pressure equaliser (32) filled with a brine solution connecting to the second circuit (40) through the evaporator (400) with the compressor (42), condenser (500) and expansion valve (41). The condenser is connected to the heating heat exchanger (200). The first circuit medium may be circulated through the second circuit evaporator or fully or partially through a bypass (33) according to a thermostat (35).