| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hot water supply system using CO<SP>2</SP>heat pump, capable of suppressing both an initial cost and a running cost of the whole system, and supplying hot water having a stable temperature to the user side even in the case of using a large quantity of hot water at one time. <P>SOLUTION: In this hot water supply system, a tank 3 of the CO<SP>2</SP>heat pump hot water supply unit 1 and a tank 4a of an electric hot water apparatus 4 are connected, the temperature of hot water fed from the CO<SP>2</SP>hot water unit 1 into the electric hot water apparatus 4 is set lower than the boiling temperature in the electric hot water apparatus 4, a temperature control mixing valve 8 is interposed in a hot water supply pipe 7a connecting the electric hot water apparatus 4 to the user sides A, B, C, and a hot water supply pipe 5a is connected to the valve 8, thereby feeding hot water having a designated constant temperature lower than the boiling preset temperature in the electric hot water apparatus 4. <P>COPYRIGHT: (C)2003,JPO |
