| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cogeneration system capable of surely preventing overheating of a power generation unit by suitably controlling a switching valve (thermal valve) for switching a circulation piping system. Ž<P>SOLUTION: This cogeneration system is provided with a first circulation piping system for circulating a coolant between a heat exchanger of a first exhaust heat using part for supplying thermal energy to a hot-water supply load and a power generation part, and a second circulation piping system for circulating the coolant between a second exhaust heat using part consisting of a prescribed thermal load and the power generation part. When a control part executes switching from the first circulation piping system to the second circulation piping system in start of self-sustaining, switching from the first circulation piping system to the second circulation piping system is completed before electric power can be supplied from the power generation part, and the power generation part is started after start of circulation of the coolant in the power generation part or in start of circulation, and supply of AC power to an electric power supply target in self-sustaining is started after the electric power can be supplied from the power generation part. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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