New Universal Relations for Liquid-Vapor Phase Equilibrium

被引：0

作者：

V. P. Skripov

M. Z. Faizullin

机构：

[1] Russian Academy of Sciences,Institute of Thermal Physics

[2] Ural Branch,undefined

来源：

International Journal of Thermophysics | 2000年 / 21卷

关键词：

heat of evaporation; orthobaric densities; saturation pressure; universal relation; vapor-liquid phase equilibrium;

D O I：

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学科分类号：

摘要：

Universal relations between the saturation pressure pLV and the value of ϕ=ΔhLV/ΔνLV−pLV, where ΔhLV .is the latent heat of evaporation and ΔνLV is the volume change of the vapor-liquid transition, and the product of the orthobaric densities ρL and ρV of the liquid and vapor at coexistence have been discovered. In the temperature range from the triple point to T/Tc≈0.9, these relations obey a power law with universal exponents. At temperatures 0.9<T/Tc≤1, pLV and ϕ depend linearly on ln(ρLρV) with retention of universality for substances of different nature.

引用

页码：1213 / 1222

页数：9