To provide a co-generation apparatus that improves total efficiency, in particular, power generation efficiency.
This co-generation apparatus 10 includes at least a power generation unit 24 comprising a generator 20 connectable to a power supply passage 16 of AC electric power from a commercial power source 12 to an electric load 14 and an engine 22 for driving the generator, a heat exchanger for exchanging heat between the cooling water and the exhaust heat of the engine for raising a temperature, a cooling water passage 42c for connecting the heat exchanger 26 to the engine and supplying the cooling water outputted from the heat exchanger to the engine , and an exhaust passage 22h connected to the engine for discharging exhaust gas outputted from the engine. The co-generation apparatus is provided with a thermo-electric generating element 46 for generating power according to a temperature difference. A low temperature part 46a of the thermo-electric generating element 46 is brought in proximity to the cooling water passage 42c, and a high temperature part 46b of the thermo-electric generating element 46 is brought in proximity to the exhaust passage 22h.
COPYRIGHT: (C)2010,JPO&INPIT
Toshiyuki Kitazawa
Kei Inoue
Hirota Tokubi
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