EQUATION OF STATE OF LIQUEFIED GASES FOR THE FREE ENERGY OF HELMGOLTS

Authors

  • В. И. Недоступ Физико-химический институт им. А.В. Богатского Национальной академии наук Украины, Люстдорфская дорога, 86, г. Одесса, Украина, 65080, Ukraine
  • О. В. Недоступ Физико-химический институт им. А.В. Богатского Национальной академии наук Украины, Люстдорфская дорога, 86, г. Одесса, Украина, 65080, Ukraine

DOI:

https://doi.org/10.18198/j.ind.gases.2006.0241

Keywords:

Equation of state, Liquefied gas, Free energy Helmholtz, «Cold» isoterm, Curve of ideal gas, Nitrogen, Methane, Ethylene

Abstract

The equation of state of the liquid phase in the explicit form of dependence of free energy of Helmgolts on its canonical variables - temperature and density has been obtained. The coefficients of the equation are dealt with both properties of the liquid overcooled up to 0 K —«cold» isoterm and property of the curve of ideal gas. Proposed equation of state allows thermodynamical properties of compressed gas be calculated without using of any information about the region interface between gas and liquid. 

Author Biographies

В. И. Недоступ, Физико-химический институт им. А.В. Богатского Национальной академии наук Украины, Люстдорфская дорога, 86, г. Одесса, Украина, 65080

V.I. Nedostup

О. В. Недоступ, Физико-химический институт им. А.В. Богатского Национальной академии наук Украины, Люстдорфская дорога, 86, г. Одесса, Украина, 65080

O.V. Nedostup

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Issue

No. 3 (2006): Технические газы

Section

THERMOPHYSICAL PROPERTIES OF GASES AND THEIR MIXTURES. THERMODYNAMIC ANALYSIS OF PROCESSES IN LOW-TEMPERATURE SYSTEMS

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