To solve such a problem that a heat main running system matching varying heat consumption is designed taking into consideration heat demand variation and heat storage efficiency in a conventional apartment building cogeneration system, so that sluggishness of power generation efficiency is hitherto inevitable.
A heating medium from a cogeneration device is fed to a heat exchanger installed for each dwelling unit inside an apartment building, city water and the heating medium for a door circulate into the heat exchanger to warm, the warmed city water is fed through a water heater for each dwelling unit, the warmed heating medium for a door circulates through a heating or drying terminal, and when a first total value of a quantity of consumed heat of a hot water supply in all the dwelling units of the apartment building is equal to or more than a second total value of a quantity of consumed heat of heating or drying in all the dwelling units of the apartment building, this system is configured to heat the heating medium by a boiler for feeding.
| JP2005147557 | HOT WATER SUPPLY APPARATUS |
| JPH07222692 | BATHTUB |
| JP3632445 | HEAT PUMP BATH WATER HEATER |
AKATSU KINYA
ARIKAWA TOSHITAKA
