Study on the Impact to the Equivalent Enthalpy Drop Model with Exhaust Enthalpy Inaccuracy

摘要：

The equivalent enthalpy drop method is an effective tool in the analysis of thermodynamic system, but in the calculating process of equivalent enthalpy drop method, the steam turbine exhaust enthalpy needs determining in advance. For condensing turbine, the exhaust steam condition point is usually in the wet vapor region, and exhaust enthalpy cant be confirmed exactly for condenser steam turbine, so the results of the equivalent enthalpy drop method have the certain computational inaccuracy. Based on the basic principle of thermal system, the inaccuracy of model is presented when some parameter of regenerative system changes. Then, the examples that valve lever leakage increasing and heater terminal difference are illustrated by a steam turbine of a 200MW power plant, calculation is done about exhaust enthalpy inaccuracy affecting on calculation result.

关键词： steam turbine exhaust enthalpy equivalent enthalpy drop inaccuracy

作者: Lei WANG Ruiqing ZHANG Wei SHEN

作者单位: Energy and Power Engineering Department, Shenyang Institute of Engineering Shenyang 110136, Liaoning, P. R. China

会议类型: 国际会议

会议名称: The Third International Conference on Modelling and Simulation(第三届国际建模、计算、仿真、优化及其应用学术会议 ICMS 2010)

会议地点: 无锡

会议语种:英文

页码: 362-365

在线出版日期: 2010-06-04（万方平台首次上网日期，不代表论文的发表时间）