| 摘要 |
PURPOSE:To improve the efficiency of a hot water supply system, and suppress the running cost from increasing by introducing the exhaust heat of a cogeneration system to the hot water supply system for a unit of residential building. CONSTITUTION:An exhaust heat recovery type hot water supply system is equipped with a hext-exchanger 11 for exhaust heat recovery, by which the exhaust heat of a fuel battery cooling system introduced for each residential building, exhaust heat recovery tank 12 for which city water is introduced, and heat source machine 15. In the meantime, a residence side heat-exchanger 18 is provided on a residence side, and the city water which has recovered exhaust heat from the previously mentioned exhaust heat recovery tank 12 is introduced to the residence side heat-exchanger 18. Then, a heat-exchange with hot water from a hot water circulation passage 17 is performed, and hot water is taken out and fed to a hot water supply faucet 20. Therefore, an effective utilization of exhaust heat becomes possible, and the comprehensive efficiency is greatly improved. Also, by pre-heating the city water, the running cost can be suppressed from increasing. |
