| 摘要 |
PURPOSE:To obtain hot water with high energy efficiency by connecting a sea water heat exchange unit, a sea water heat source-heat pump unit, and a solar energy collecting unit to a hot water supply pipe system. CONSTITUTION:In a hot water supply pipe system 1, the temperature of hot water is orderly raised in the order of a sea water heat exchange unit 5 a sea water heat source heat pump unit 6 a solar energy collecting unit 7. The hot water so heated is held in a heat storage tank 70 possessed by the solar energy collecting unit 7. In operating the system, the opening degree of a three- way valve 62 is adjusted, sluice valves 52, 53, 73, and 74 are opened, the valve 54 is closed, and a solar energy-powered circulating pump 71, a hot water supply circulating pump 3, and hot water circulating pumps 51 and 61 are operated to supply hot water. Since such a device has a higher operational efficiency than that of heat suppliers using hot-water boilers, that is, the primary energy efficiency of this device is 1.1-1.4 as compared with that (0.8) of the hot water boiler, high energy efficiencies can thus be obtained. |
