| 摘要 |
PROBLEM TO BE SOLVED: To simply and easily perform electrothermal ratio control of a cogeneration device while maintaining the maximum heat recovery efficiency by simplified facilities. SOLUTION: In a cogeneration device provided with a steam generation boiler capable of operating at various pressure and provided with a gas turbine, a generator, a regenerator, a combustor, a hot water heat exchanger, supplying high temperature turbine exhaust gas from the gas turbine to the steam generation boiler after heating compressed combustion air in the regenerator, the steam generation boiler is operated under reduced pressure steam to increase heat recovery by the hot water heat exchanger when heat demand of heat load is large, and the steam generation boiler is operated under high pressure steam and part of generated high pressure steam is injected into the combustor or a compressed combustion air system including the compressor and the regenerator to increase output of the generator when heat demand of heat load is small. COPYRIGHT: (C)2005,JPO&NCIPI
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