Heat capacities and Joule-Thomson coefficients of HFC refrigerants
- Keio Univ., Yokohama (Japan). Dept. of System Design Engineering
In this report, the authors have examined the behavior of heat capacities and Joule-Thomson coefficients in low- and moderate-density regions based on recent theoretical studies of the ideal-gas heat capacity and virial coefficients of R-32, R-125, R-134a, r-143a, and R-152a. The results have been compared with those derived from empirical equations of state which have been recently developed, based on a large quantity of experimental data for these refrigerants. Both results are in good agreement. Proper behaviors for these second-derivative properties justify the use of the empirical equations of state in low-temperature and low-density regions where no experimental data are available.
- OSTI ID:
- 345203
- Report Number(s):
- CONF-970629--
- Journal Information:
- International Journal of Thermophysics, Journal Name: International Journal of Thermophysics Journal Issue: 1 Vol. 20; ISSN 0195-928X; ISSN IJTHDY
- Country of Publication:
- United States
- Language:
- English
Similar Records
The Joule-Thomson expansion coefficient by formula manipulation
Joule-Thomson coefficient of ideal anyons within fractional exclusion statistics