| 摘要 |
<p>A heating or cooling system uses a heat pump and a phasechange thermal storage tank (1) to supply space heating, space cooling, and domestic hot water to a building. A heat exchanger (12) in the exhaust air stream and another one attached to the building grey water drain pipe (11) extract heat from the stale air and grey water for delivery to the thermal storage tank (1) via an ethylene glycol loop. Subsequently, this heat is extracted from the thermal storage tank to supply the evaporator (2) in the heat pump when a heating demand occurs. A potable water loop extends through the condenser (4), a hot water tank (15) and if required, an air conditioning unit heat exchanger (14). Cooling is supplied via an extension of the ethylene glycol loop passing to a heat exchanger (10). <IMAGE></p> |
