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    • 4. 发明申请
    • COMBINED CYCLE POWER PLANT
    • 组合循环发电厂
    • WO2011005343A1
    • 2011-01-13
    • PCT/US2010/030747
    • 2010-04-12
    • NRG ENERGY, INC.ROSE, Steven AndrewDOYLE, Christopher James
    • ROSE, Steven AndrewDOYLE, Christopher James
    • F02C6/08F02C6/18F22B1/18F01K7/12F01K11/02F01K19/04
    • F01K7/06F01K3/245F01K23/10Y02E20/16
    • Disclosed herein are embodiments of combined cycle power plants having elevated exhaust pressure from a steam turbine. The elevated exhaust pressure from the steam turbine may result in an elevated condensate pressure and temperature. A cooling system removes sensible heat from the condensate. The elevated condensate temperature results in a greater temperature difference between the condensate and the working medium in the cooling system. The amount of heat that is dissipated by the cooling system is proportionate to the heat transfer surface and the temperature difference between the condensate and the working medium. As a result of the greater temperature difference, a smaller cooling system configured to operate with a higher temperature condensate may be utilized in place of a larger cooling system configured to operate with lower temperature condensate. By reducing the size of the cooling system, the overall size of the combined cycle power plant may be reduced.
    • 这里公开了具有来自蒸汽轮机的高排气压力的联合循环发电厂的实施例。 来自蒸汽轮机的升高的排气压力可能导致冷凝水压力和温度升高。 冷却系统从冷凝水中除去明显的热量。 冷凝水温度升高导致冷凝水和冷却系统中工作介质之间的温差更大。 由冷却系统耗散的热量与传热面和冷凝水与工作介质之间的温差成比例。 由于温差较大,可以利用较小的冷却系统来构造成用较高温度的冷凝水进行操作,代替配置为与较低温度的冷凝物一起运行的较大的冷却系统。 通过减小冷却系统的尺寸,可以减小联合循环发电厂的总体尺寸。