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抽汽冷凝式热电联供汽轮机,它有机械功和热两种输出。延用冷凝式汽轮机以热耗或汽耗为热力评价的方法,不能评定出这两种输出的综合热经济指标,也不能说明两者的相互影响。例如对供热抽汽的焓和过热度,它就无法准确定量出最佳值和说明对电厂收益的数量。特别对大功率的再热抽汽冷凝式热电联供汽轮机,最佳再热参数和抽汽率的选择有着重要意义。本文推荐以透平部分循环热效益(以与循环效率区别)的方法作为抽汽冷凝式热电联供汽轮机的热力评价方法。
Extraction steam condensing cogeneration turbine, it has mechanical work and heat two kinds of output. Consequent to the use of condensing steam turbine heat or steam consumption as the thermal evaluation method, can not be assessed both output thermal economic indicators, can not explain the interaction between the two. For example, the enthalpy and superheat of the heat extraction steam can not accurately quantify the optimal value and explain the amount of power plant revenue. Especially for the high-power reheat extraction condensing CHP turbine, the optimal reheat parameters and the choice of extraction rate are of great significance. In this paper, we propose a method of thermal evaluation of turbine partial circulation thermal benefits (differentiated from cycle efficiency) as a thermal evaluation method for extraction condensing cogeneration steam turbines.