| 摘要 |
PURPOSE:To enable an additional heating of a bath tub to be carried out further enable a heat recovery to be attained from a remained hot water in the bath tub by a method wherein a first condensor outlet water temperature and a second condensor outlet water temperature become a predetermined temperature, respectively, and a hot water storing tank lower water temperature is compared with the second condensor outlet water temperature. CONSTITUTION:When it is judged that there is remained hot water in a bath tub by a hot water temperature and water pressure sensor 26, a second heat pump 9 is operated, a remained hot water within a bath tub 11 is applied as a heating source by an evaporator 12 and then the hot water fed is heated by a second condensor 13. The hot water fed passes from a lower part of a hot water storing tank 16 through a changing-over valve 19, a pump 17, a control valve 23 and a second condensor 13, and a control valve 23 is controlled by a controller 29 in such a way as the hot water shows a predetermined temperature by a temperature sensor 26. A flow rate of the hot water fed is adjusted. The fed hot water heated up to a specified temperature returns from the changing-over valve 20, a control valve 21 and a changing-over valve 18 to an upper part of the hot water storing tank 16. At this time, a result of sensing of the temperature sensor 25 is compared with a detected hot water temperature of a hot water temperature sensor 27 at the lower part within the hot water storing tank 16, and a flow rate of the hot water is adjusted in such a way as the temperature becomes lower than a lower part temperature within the hot water storing tank 16. Under this operation, it is possible to perform an additional heating with a heat pump device 9 having the hot water storing tank 16 as the heat source. |
