Measurements of the refractive index of alternative refrigerants

被引：16

作者：

Yata, J ^{[1
]}

Hori, M ^{[1
]}

Kawakatsu, H ^{[1
]}

Minamiyama, T ^{[1
]}

机构：

[1] FUKUYAMA UNIV,DEPT MECH ENGN,FUKUYAMA,HIROSHIMA 72902,JAPAN

来源：

INTERNATIONAL JOURNAL OF THERMOPHYSICS | 1996年 / 17卷 / 01期

关键词：

alternative refrigerants; coexistence curve; critical refractive index; critical temperature; refractive index;

D O I：

10.1007/BF01448210

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Measurements of coexistence curves of the refractive index of HCFC-22, HFC-23, 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 by PVT measurement.

引用

页码：65 / 74

页数：10

共 8 条

[1] ALTERNATIVE REFRIGERANTS R123A, R134, R141B, R142B, AND R152A - CRITICAL-TEMPERATURE, REFRACTIVE-INDEX, SURFACE-TENSION, AND ESTIMATES OF LIQUID, VAPOR, AND CRITICAL DENSITIES [J].

CHAE, HB ;

SCHMIDT, JW ;

MOLDOVER, MR .

JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (25) :8840-8845

[2] COEXISTENCE CURVE, COMPRESSIBILITY, AND EQUATION OF STATE OF XENON NEAR CRITICAL-POINT [J].

ESTLER, WT ;

HOCKEN, R ;

CHARLTON, T ;

WILCOX, LR .

PHYSICAL REVIEW A, 1975, 12 (05) :2118-2136

[3]

HIGASHI Y, 1992, 13 JAP S THERM PROP, P65

[4] GRAVITY EFFECTS IN FLUIDS NEAR THE GAS-LIQUID CRITICAL-POINT [J].

MOLDOVER, MR ;

SENGERS, JV ;

GAMMON, RW ;

HOCKEN, RJ .

REVIEWS OF MODERN PHYSICS, 1979, 51 (01) :79-99

[5]

MORIFUMI K, 1986, INT J THERMOPHYS, V7, P17

[6]

RATHJEN W, 1977, 7TH P S THERM PROP, P839

[7] THERMODYNAMIC BEHAVIOR OF FLUIDS NEAR THE CRITICAL-POINT [J].

SENGERS, JV ;

SENGERS, JMHL .

ANNUAL REVIEW OF PHYSICAL CHEMISTRY, 1986, 37 :189-222

[8] OPTICAL INVESTIGATION OF DENSITY STRATIFICATION IN CRITICAL STATE [J].

STRAUB, J .

CHEMIE INGENIEUR TECHNIK, 1967, 39 (5-6) :291-&

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