TY - JOUR
T1 - Heat capacities and Joule-Thomson coefficients of HFC refrigerants
AU - Yokozeki, A.
AU - Sato, H.
AU - Watanabe, K.
N1 - Funding Information:
The authors thank the New Energy and Industrial Technology Development Organization, Tokyo for financial support of the present study.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 1999
Y1 - 1999
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.
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U2 - 10.1023/A:1021486432011
DO - 10.1023/A:1021486432011
M3 - Conference article
AN - SCOPUS:0032643271
VL - 20
SP - 141
EP - 148
JO - International Journal of Thermophysics
JF - International Journal of Thermophysics
SN - 0195-928X
IS - 1
T2 - Proceedings of 1997 13th Symposium on Thermophysical Properties
Y2 - 22 June 1997 through 27 June 1997
ER -