Various forms of combining parts of the invention, by which water in multi-stage recirculating water-heating tank for collector and/or multi-stage confluent water-heating tank, as a whole or separately, can be heated by solar energy collector, or a heat p
Various forms of combining parts of the invention, by which water in multi-stage recirculating water-heating tank for collector and/or multi-stage confluent water-heating tank, as a whole or separately, can be heated by solar energy collector, or a heat p
所述的经太阳能集热器、或热泵、或电加热装置同时或分别对集热器循环加热水箱、分级加热式汇流热水箱中的水进行分级加热的组合包括:阳光天可全部采用太阳能集热器进行加热和储存热水，夜间峰谷电时段可采用热泵或电加热装置进行补充加热和储存热水，无阳光的非峰谷电时段可根据定量的热水储量设置需求采用热泵进行即时加热和储存热水。