Kalina循环的热力学第一定律分析

从热力学第一定律的角度出发,选取P-R方程作为氨-水混合物性质的基本计算公式,对一级蒸馏Kalina循环进行了热力学分析.编制了氨-水混合工质热力性质及Kalina循环热力性能计算程序,对Kalina循环热功转换的主要热力性能进行了理论计算,分析了透平进口压力、透平进口温度、透平背压、工作溶液浓度、基本溶液浓度、循环倍增率等关键参数对循环性能的影响.

An Analysis of Kalina Cycle Based on the 1st Law of Thermodynamics

Starting from the 1~(st) law of thermodynamics,and making use of Peng-Robinson equations to serve as the basic equations for representing the properties of ammonia-water mixtures,a thermodynamic analysis of a stair distillation Kalina cycle is being presented.A program for calculating the thermodynamic properties of ammonia-water mixtures,and another for calculating the performance of Kalina cycles,have been composed,with which the heat-work conversion particulars of Kalina cycles have been theoretically calculated,and the influence on cycle property of critical parameters,like the pressure and temperature at turbine's entrance,the turbine's back pressure,the concentration of the working solution and that of the basic solution as well as the cycle's mass ratio,analyzed.Figs8,tables 2 and refs 16.