高湿空气在高温高压区域内的热物性计算及分析

首先介绍了湿空气热物性的3种计算方法：工程计算法、基于维里方程的余函数计算法和基于R-K方程的余函数计算法，继而采用这3种方法对湿空气在不同压力、温度、湿度下的比容、焓值进行了计算，还对湿空气达到饱和状态时的含湿量进行了计算，计算完成后对计算结果进行了比较分析；结论认为3种方法对比容的计算不会产生很大偏差；压力、温度、湿度在不同的区域对焓值的影响各有不同；采用基于R-K方程的余函数计算法计算的饱和含湿量要高于采用工程计算法所计算的饱和含湿量5％～10%，很好的反映了实际的湿化情况。图3表2参11

Calculation and Analysis of Thermodynamic Properties for High Humid Air in High Temperature and High Pressure

Three calculation methods are given for the humid air: engineering calculation method, the calculation method of deviation function based on two-terms virial equation of state, the calculation method of deviation function based on modified Redlich-Kwong equation of state. Through the three calculation methods, two important data, volume and enthalpy are calculated. The saturated absolute humidity is also calculated while the humid air is in saturation conditions. All the calculation results are compared and analyzed. The conclusion is that the vapor has little difference between the three methods, the enthalpy is related with the pressure, temperature and absolute humidity in different working range, the saturated absolute humidity from the third method is more higher than the value from the first method about 5%~10%. Figs3, tables 2 and refs 11.