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《Turbine Technology》 2008-06
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A Method for Feed-water Enthalpy Rise Optimum Distribution of Thermodynamic System in Power Plant

GUO Min-chen1,LIU Qiang2 (1 College of Energy and Power Engineering,North China Electric Power University,Beijing 102206,China;2 College of Energy and Power Engineering,Nanjing Institute of Technology,Nanjing 211167,China)  
Based on the matrix method,the feed-water enthalpy rise optimum distribution of thermodynamic system in power plant is analyzed.Firstly,the calculation equations for the power and the heat rate of steam turbine are given in vector form,the rate of extraction steam is calculated by the general matrix thermal balance equation,and then receive the equation of the efficiency of steam turbine which has relative with parameters of every node in the thermodynamic system.The equation of the efficiency of steam turbine is the aim function,the feed-water enthalpy rise distribution is optimized under the restriction condition.The principle of feed-water enthalpy rise distribution can be explained by the optimum method,through the calculation of a 300MW unit,the results indicate that the method is versatility and generality.
【CateGory Index】: TM621.4
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