大功率机组回热系统热经济性评价的新指标

New Index to Evaluate Thermal Economy of Regenerative System of High-power Unit

针对现有评价汽轮机回热系统热经济性能的指标存在的问题,通过定义一个修正系数,对理想循环热效率进行了修正,使得修正后的理想循环热效率不再受汽轮机本体相对内效率的影响。并通过实例进行了验证。

Available index couldn＇t evealuate thermal economy of regenerative system very well. （the Meal cycle can＇t efficiency affected by relative internal efficiency of steam turbine） In this paper, it amended the ideal cycle heat efficiency by definiting an amdt factor So the amended ideal cycle heat efficiency no more affeted by the relative internal efficency of steam turbine. At last, taking a 300 MW generaion unit for example, the amended ideal cycle heat efficiency was proved to be reasonable.