To provide a cogeneration system having high safety capable of preventing occurrence of healthy damage by drink, by preventing sanitary sewage from flowing into a fresh water circulation passage and informing a user of an accident when a partition of a heat exchanger breaks and water supply stops.
This cogeneration system comprises the fresh water circulation passage for circulating fresh water heated by exhaust heat of an exhaust heat such as an engine power generator, a sanitary sewage circulation passage for circulating sanitary sewage such as bathtub water, and at least one heat exchanger for exchanging heat between the fresh water and the sanitary sewage. Heat of the fresh water is supplied to the sanitary sewage by the heat exchanger to heat the sanitary sewage. The fresh water circulation passage has an upstream side solenoid valve disposed on the upstream side of the heat exchanger, and a downstream side solenoid valve disposed on the downstream side of the heat exchanger.
| WO/2013/160993 | HEAT TRANSPORT DEVICE |
| WO/2023/075590 | FLOW DIVERTER |
TAKIMOTO KEIJI
IWATA SHIN
TAKAGI HIROSHI
YOSHIMURA MASAHIRO
YOSHIDA SATORU
OSAKA GAS CO LTD
TOHO GAS KK
SEIBU GAS CO LTD