Multiple medium hot water and house heating system - has valves controlling flow through heat pump with electric and solar heating

摘要

The heating system for a house combines solar heat collectors (1) with a heat pump (2) and a hot water tank (3) using electric heating at the cheap rate. The cooling circuit of the heat pump has a condenser (10a) for the hot water supply tank (4) and radiators (5) with a compressor (6) at its input side, and an expansion valve (7) at its output side. In parallel with this compressor is an evaporator (13b) in the main tank (3) receiving heat from it and a second evaporator (13a) with a fan (14) extracting heat from the atmosphere. According to the heat from the sun, the ambient temperature, the load on the main tank and the heat requirements, the cooling system passes through valves (11, 12) only through one of the heat exchangers or through both (13a, 13b).