根据计算范围的不同,提出适合宽温度、压力范围,涵盖多个湿空气热物理性质参数的分段计算方法:在低温、低压范围内将湿空气看作理想混合气体,采用理想气体状态方程建立模型计算湿空气的热物理性质参数;在高温、高压范围内将湿空气看作干空气和水蒸气的实际二元混合气体,采用维里方程建立湿空气的半经验模型计算湿空气的热物理性质参数.分析确定了分段计算的分界点,并说明了分段计算的连续性.结果表明:与参考文献的计算结果相比,采用该文提出的湿空气热力性质分段方法得出的计算结果的最大误差仅为4.5%,且计算过程简单快捷,易于程序实现,可用于绘制焓湿图. According to the different calculation range, the subsection method is proposed to fit the wide range of temperature and pressure range and cover the thermophysical properties of a plurality of wet air. Wet air is regarded as ideal mixed gas at low temperature and low pressure, and the ideal gas equation of state is established The model calculates the thermophysical properties of wet air. The wet air is considered as the actual binary mixed gas of dry air and water vapor in the high temperature and high pressure range. The semi-empirical model of wet air is established by means of the Veli equation to calculate the thermophysical The parameters of the section are calculated and the continuity of the section calculation is described. The results show that compared with the results from the references, the staged method of the thermodynamic properties of wet air proposed in this paper is adopted The maximum error of the calculation results is only 4.5%, and the calculation process is simple and quick, easy to program implementation, can be used to draw the psychrometric chart.