| 摘要 |
PURPOSE: To heighten the steam temperature of a steam turbine, practicing economy, by recovering a part of or the entire of exhaust heat from a gas turbine to generate cooling steam and introducing the cooling steam into a steam turbine. CONSTITUTION: A boiler 20 is prepared, which elevates through additional combustion the temperature of a part of steam generated in an exhaust heat recovery boiler 2. In addition, a pipe 14 is prepared, which introduces a part of steam generated in the exhaust heat recovery boiler 2 into a cooling part of a steam turbine 3, while a regulating valve 13 for regulating the quantity of the cooling steam is interposed in a path of the pipe 14.
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