Open AccessThermodynamic properties of fluid oxygen at temperatures to 250 K and pressures to 350 atmospheres on isochores at 1.3 to 3.0 times critical density
Author(s) -
Robert Goodwin
Publication year - 1969
Publication title -
journal of research of the national bureau of standards. section a. physics and chemistry
Language(s) - English
Resource type - Journals
eISSN - 2376-5704
pISSN - 0022-4332
DOI - 10.6028/jres.073a.003
Subject(s) - thermodynamics , triple point , equation of state , chemistry , critical point (mathematics) , internal energy , thermal , enthalpy , oxygen , liquid state , heat capacity , liquid phase , liquid oxygen , physics , organic chemistry , mathematical analysis , mathematics
The starting point for these calculations is liquid oxygen at the triple point. An analytical formula is used for specific heats of saturated liquid along the coexistence path to obtain internal energies and entropies of the saturated liquid. With these initial values, the calculations next are made as a function of temperature along isochores, using an "equation of state" for the specific heats C v ( ρ, T ) in the single-phase domain. Enthalpies are obtained by adding P v to the internal energies. Results are tabulated at uniform densities and temperatures. Based on uncertainties of one percent in the specific heat data, the uncertainty of thermal properties also is taken to be 1 percent.