蒸汽热力状态参数计算方法的研究

Study on Calculation Method of Steam Thermal State Parameters

介绍了状态方程及蒸汽热力状态参数计算公式IAPWS-IF97等计算精度较高的蒸汽热力状态参数计算方法。选取温度低于623.15 K的未饱和水区、过热蒸汽区、湿蒸气或饱和线区中的多个压力、温度状态点对三者的计算精度进行比较,在进行蒸汽管网水力计算时宜采用IAPWS-IF97。

The methods for calculating stream thermal state parameters accurately, including state equations, calculation formula IAPWS-IF97 etc. are introduced. The multiple state points of pressure and temperature in unsaturated water zone of temperature below 623.15 K, superheated vapor zone and wet steam or saturated line zone are selected, and the calculation accuracy of the three zones is compared. IAPWS-IF97 should be adopted when the hydraulic calculation of steam network is conducted.