| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To miniaturize a hot water storage tank individually installed in respective houses. <P>SOLUTION: The hot water storage tank 2 and a fuel cell 3 are respectively provided in a plurality of the houses 1. A hot water supply pipe 4 is connected to an exhaust heat recovery part 3a of the fuel cell 3, and a hot water faucet 5 is connected to the hot water supply pipe 4. The hot water supply pipe 4 is connected to the hot water storage tank 2, and a hot water return pipe 8 is connected to the hot water storage tank 2. The hot water supply pipes 4 of the respective houses 1 are connected with one another. When supply of water is detected by any of flow switches for detecting supply of hot water from the hot water faucet 5, an opening and closing valve 16 with respect to the corresponding hot water storage tank 2 is opened, and hot water is fed from the hot water storage tank 2. When a hot-water detecting means 14 detects non-existence of hot water in the hot water storage tank 2 during opening of the opening and closing valve 16, the opening and closing valve 16 of the hot water storage tank 2 is closed, the opening and closing valves 16 with respect to all of the hot water storage tanks 2 of the other houses 1 are opened, and hot water is fed from the hot water storage tanks 2 of the other houses 1 to supply hot water. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
