| 摘要 |
PROBLEM TO BE SOLVED: To provide a cogeneration apparatus capable of: maintaining a power generation operation of a power generation unit by avoiding a situation in which an operation of the power generation unit is forcibly terminated due to a microcomputer meter erroneously determining that a gas leakage is detected; and also retrieving a released heat quantity while minimizing the heat release for the avoidance.SOLUTION: A cogeneration apparatus is configured to operate the following operations when a set period of time passes at which a heat generation unit continues to generate power (YES in S1). If additional combustion of an auxiliary heat source unit is possible by comparing a present amount with a full amount of heat storage in a hot water tank (NO in S2), water at the bottom part of the hot water tank is additionally combusted to accumulate heat at the top part of the tank. If the additional combustion is not possible (YES in S2), the water at the top part of the hot water tank is delivered to the auxiliary heat source unit which is in a non-combustible state, and the heat thereof is released by an operation of a blast fan before being stored at the bottom of the hot water tank. Thereafter, the additional combustion is performed to heat the water at the bottom of the hot water tank to accumulate the heat at the top part of the hot water tank. |
