| 摘要 |
PROBLEM TO BE SOLVED: To provide a cogeneration system capable of preventing pipes from being frozen even without using a freezing prevention heater during autonomous power-generating operation. ! SOLUTION: A cogeneration system 1 comprises: a fuel-battery power generator 2; a hot-water-storage water heater 3; and an exhaust heat recovery-circulation circuit 15. The hot-water-storage water heater 3 includes a hot water storage tank 4; a feedwater passage 8; a hot water feed passage 9; a hot water pouring passage 11; a bath reheating circuit 12 reheating bathtub water in a bathtub; an outdoor-temperature detection sensor 16a detecting an outdoor temperature; and an operation remote controller 46. The cogeneration system comprises a control unit 45 executing freezing prevention by automatically supplying hot water from the hot water storage tank 4 to the bathtub if the outdoor temperature detected by the outdoor-temperature detection sensor 16a is equal to or lower than a set temperature and setting to allo |
