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本文应用国际公式化委员会(IFC)所提出的过热蒸汽热力学性质计算公式(1967年)编制成程序,在电子计算机上用外推法计算出饱和线和95%干度线之间范围内过饱和蒸汽的热力学性质,并将计算结果编制成表和图.本文提出一个准确的与球形液滴平衡的蒸汽压方程.并由此得出在较高压力下可以应用过饱和蒸汽表来计算临界液滴半径或过饱和度的较准确而简单的公式.在温度高达250℃,压力高达60bar以及干度大于95%的宽广范围内误差小于1%.当用其它方法计算时,误差可达10%到26%.
In this paper, the formula of thermodynamic properties of superheated steam proposed by the International Committee for Formulation (IFC) was compiled into a program and the extrapolation method was used to calculate the supersaturated steam in the range between the saturation line and the 95% dryness line And the results are compiled into tables and graphs.This paper presents an accurate vapor pressure equation that is in equilibrium with spherical droplets and concludes that at higher pressures supersaturated vapor tables can be used to calculate critical droplets Radius or supersaturation More accurate and simple formula The error is less than 1% over a wide range of temperatures up to 250 ° C, pressures up to 60 bar and dryness> 95% .When calculated by other methods, the error can reach 10% 26%.