Dependence of the isobaric specific heat capacity of water vapor on the pressure and temperature
1 KEZ, TU Liberec, Studentská 1402/2, 461 17 Liberec 1, Czech Republic
2 U12112, CTU Prague, Technická 4, 166 07 Praha 6, Czech Republic
a Corresponding author: firstname.lastname@example.org
Published online: 28 March 2016
The fundamental base for the calculation of the thermodynamic properties of substances is the thermal equation of state and the dependence of some of the basic specific heat capacities on temperature. Dependence of isobaric specific heat capacity on the pressure can already be deduced from these relations. International standards of the properties of water and steam are based on the new scientific formulation IAPWS-95. The equation is in the form of Helmholtz dimensionless function with very much parameters. The aim of this paper is to design the simple dependence of the isobaric specific heat capacity of water vapor on the pressure and temperature in the range in which the steam occurs in the atmospheric moist air.
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