| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a system which can be easily added to an existing boiler, be provided inexpensively without causing problems of an installation space and maintenance, promote energy saving and reduce the amount of emission of warming gas. <P>SOLUTION: In the system, a water supply pipe 20 and a hot water supply pipe 30 connecting to the existing boiler 10 are branched, and a water heater is additionally connected to the branched water supply pipe and hot water supply pipe. The water heater includes a hot water storage unit 50 and a heat pump unit 60. In the system, water supply to the boiler 10 for hot water supply is stopped and water is supplied only to the water heater and is heated. Heat transferred from the boiler 10 used for heating through the water supply pipe 20 and hot water supply pipe 30 is provided for water to be supplied to the water heater and hot water sent out from the water heater. <P>COPYRIGHT: (C)2010,JPO&INPIT |
