Measurements of the refractive index of alternative refrigerants |
| |
| Authors: | J Yata M Hori H Kawakatsu T Minamiyama |
| |
| Affiliation: | (1) Department of Mechanical and System Engineering, Kyoto Institute of Technology, Matsugasaki, 606 Sakyo-ku, Kyoto, Japan;(2) Department of Mechanical Engineering, Fukuyama University, 4933 Sanzo, Gakuen-cho 1, 729-02 Fukuyama, Japan |
| |
| Abstract: | Measurements of coexistence curves of the refractive index of HCFC-22, HFC23, HFC-32, HFC-125, and HFC-152a have been carried out in the range from ambient to critical temperature. Near the critical temperature the refractive index has distribution in both the vapor and the liquid phases in the test cell. Thus the values at the boundary between vapor and liquid are selected at those of saturated vapor and liquid, respectively. The values of the critical temperature and critical refractive index for each substance are estimated. The refractive index is related to density by the Lorentz-Lorenz equation. In the case of HFC-32 the value of the LL function is assumed to be constant in the limited region near the critical point, and the values of density of saturated vapor and liquid are calculated and are compared with the experimental values of density obtained byPVT measurement.Paper presented at the Twelfth Symposium on Thermophysical Properties, June 19–24, 1994, Boulder, Colorado, U.S.A. |
| |
| Keywords: | alternative refrigerants coexistence curve critical refractive index critical temperature refractive index |
| 本文献已被 SpringerLink 等数据库收录！ |
|
