TY - JOUR
T1 - Saturated liquid densities and bubble-point pressures of the binary HCFC 22 + HFC 152a system
AU - Maezawa, Yukishige
AU - Sato, Haruki
AU - Watanabe, Koichi
N1 - Funding Information:
We are indebted to Tokyo Electric Power Co. Ltd., Tokyo, for financial support. We are also grateful for a Grant-in-Aid for Scientific Research Fund in 1989 (Project No. 01790369) from the Ministry of Education, Science and Culture, Japan. Atsushi Hosi, who gave valuable assistance, is gratefully acknowledged.
PY - 1991/10
Y1 - 1991/10
N2 - Sixty-six values of saturated liquid density and bubble-point pressure for the binary HCFC 22 + HFC 152a system were measured using a magnetic densimeter coupled with a variable volume cell. The results for five different compositions, 10, 30, 50, 70 and 90 wt.% of HCFC 22, cover a temperature range of 280-380 K. The experimental uncertainties in temperature, pressure, density and composition measurements were estimated to be not greater than ±15 mK, ±20 kPa and ±0.3% and between -0.11 and +0.01 wt.%, respectively. The purity of the sample used was 99.97 wt.% for HCFC 22 and 99.9 wt.% for HFC 152a. The modified Rackett equation proposed by Spencer and Dannar and the Hankinson-Brost-Thomson equation are discussed on the basis of the present measurements. Vapor-liquid equilibrium calculations based on the Peng-Robinson equation of state are also discussed.
AB - Sixty-six values of saturated liquid density and bubble-point pressure for the binary HCFC 22 + HFC 152a system were measured using a magnetic densimeter coupled with a variable volume cell. The results for five different compositions, 10, 30, 50, 70 and 90 wt.% of HCFC 22, cover a temperature range of 280-380 K. The experimental uncertainties in temperature, pressure, density and composition measurements were estimated to be not greater than ±15 mK, ±20 kPa and ±0.3% and between -0.11 and +0.01 wt.%, respectively. The purity of the sample used was 99.97 wt.% for HCFC 22 and 99.9 wt.% for HFC 152a. The modified Rackett equation proposed by Spencer and Dannar and the Hankinson-Brost-Thomson equation are discussed on the basis of the present measurements. Vapor-liquid equilibrium calculations based on the Peng-Robinson equation of state are also discussed.
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U2 - 10.1016/0378-3812(91)80003-E
DO - 10.1016/0378-3812(91)80003-E
M3 - Article
AN - SCOPUS:0025746352
SN - 0378-3812
VL - 61
SP - 263
EP - 273
JO - Fluid Phase Equilibria
JF - Fluid Phase Equilibria
IS - 3
ER -