The said energy storing water tank consists of warm water storage tank of multiple stage heating and hot water storage tank, in parallel connection with multi-stage confluent water-heating tank.

• 所述的储能水箱是一个以上的水箱，储能水箱包括分级加热式温水储热水箱及终温储热水箱，分级加热式汇流热水箱与分级加热式温水储热水箱及终温储热水箱间的连接是并联连接。