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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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二次再热机组汽轮机抽汽参数确定方法
, PP. 27-30
Keywords: 1000mw机组,二次再热,汽轮机,抽汽焓值,抽汽口,火用损,回热效率,等焓升方法
Abstract:
基于给水等焓升方法(传统方法),以配备二次再热、混合式加热器的回热系统为模型,建立了汽轮机回热系统效率与抽汽焓值的关系方程,以回热系统效率最大为目标函数推导出相邻2级加热器抽汽焓值的递推关系,从而确定出汽轮机的最佳抽汽焓值(本文方法)。将本文方法用于某1000mw二次再热机组汽轮机的抽汽焓值计算,并与传统方法的计算结果进行了比较。结果表明:采用本文方法确定的汽轮机抽汽口位置分布更均匀、合理；回热系统效率高0.10%,加热器火用损总值减少1.37kj/(kg？mw)。
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