| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell cogeneration system with a higher heat utilization rate than a prior art but more simplified, and easy to propagate in various houses including existing ones, to be installed in a given region or in apartment houses, as well as its operation method. <P>SOLUTION: The system comprises a dwelling-unit hot water storage tank 61 for storing exhaust heat of a fuel cell power generation device as hot water through a heat-collection circulating water pipe 62, a common hot water storage tank 77 installed inside a given area or an apartment house, a pipe 76 branching from the heat-collection circulating water pipe and guiding circulating water for heat collection above the common hot water storage tank, a pipe 82 for flowing back the circulating water for heat collection from lower part of the common hot water storage tank to a lower part of each dwelling-unit hot water storage tank, and a pipe 79 for flowing back the circulating water for heat collection from upper part of the common hot water storage tank to an upper part of each dwelling-unit hot water storage tank. When hot water temperature in each dwelling-unit hot water storage tank reaches a given value, the hot water is circulated form the heat-collection circulating water pipe to the common hot water storage tank to radiate heat through the common hot water storage tank, and the hot water inside the common hot water storage tank is effectively utilized. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
