| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hot water circulation heating system of high heat efficiency, capable of saving energy. <P>SOLUTION: This hot water circulation heating system performing heating by circulating hot water, comprises a tank 40 for storing hot water, an indoor radiator, a circulation pump 51 for indoor heating, allowing the hot water to flow from the tank 40 to the indoor radiator and to return to the tank 40 again, a heat pump 10 for heating the hot water, and a circulation pump 25 for heating the hot water. The circulation pump 25 for heating hot water allows the hot water to flow from the tank 40 to the heat pump 10 and to return to the tank 40 again. The heat pump 10 has a compressor 11, a radiator 12, an expansion valve 13 and an evaporator 14, and heats the hot water by the heat released from the radiator 12. <P>COPYRIGHT: (C)2008,JPO&INPIT |
