Abstract
In this report, we 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.
| Original language | English |
|---|---|
| Pages (from-to) | 141-148 |
| Number of pages | 8 |
| Journal | International Journal of Thermophysics |
| Volume | 20 |
| Issue number | 1 |
| Publication status | Published - 1999 Jan |
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ASJC Scopus subject areas
- Fluid Flow and Transfer Processes
- Physical and Theoretical Chemistry
- Computational Mechanics
- Mechanics of Materials
- Physics and Astronomy (miscellaneous)
Cite this
Heat capacities and Joule-Thomson coefficients of HFC refrigerants. / Yokozeki, A.; Sato, H.; Watanabe, K.
In: International Journal of Thermophysics, Vol. 20, No. 1, 01.1999, p. 141-148.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Heat capacities and Joule-Thomson coefficients of HFC refrigerants
AU - Yokozeki, A.
AU - Sato, H.
AU - Watanabe, K.
PY - 1999/1
Y1 - 1999/1
N2 - In this report, we 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.
AB - In this report, we 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.
UR - http://www.scopus.com/inward/record.url?scp=0032643271&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032643271&partnerID=8YFLogxK
M3 - Article
VL - 20
SP - 141
EP - 148
JO - International Journal of Thermophysics
JF - International Journal of Thermophysics
SN - 0195-928X
IS - 1
ER -