期刊名称：Bulletin of the Institute of Heat Engineering
印刷版ISSN：2083-4187
出版年度：1989
卷号：73
页码：43-54
语种：Polish
出版社：Warsaw University of Technology
摘要：In this paper the approximate formulae for calculation of saturation pressure - p and ρ', ρ", h', h", s', s" as a function of saturation temperature are found. In similar manner the approximate formulae for calculation of t, ρ', ρ", h', h", s', s" as a function of p are derived. The computer subroutine in Fortran IV for all above-mentioned thermodynamic functions and parameters was written. The operating range of this subroutine is in the ranges t ∈ <-70°C; 105°С> and p ∈ <0,01223 MPa; 3,649 MPa).
