Capillary-constant correlations for some new refrigerants

Journal Article · Tue Sep 01 00:00:00 EDT 1998 · International Journal of Thermophysics

DOI:https://doi.org/10.1023/A:1021991704406· OSTI ID:305484

Srinivasan, K ^[1]; Wijeysundera, N E ^[1]

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1. National Univ. of Singapore (Singapore). Dept. of Mechanical and Production Engineering

This paper presents a method of evaluating the capillary constant of some new refrigerants, namely HFCs 32, 125, 134, 134a, 143a, and 152a; HCFCs 123, 123a, 124, 141b, and 142b in the liquid-vapor coexistence regions except within 2 K from the critical point. The correlation is of the form a{sup 2} = a{sub 0}{sup 2}(1 {minus} T{sub r}){sup 0.92} where a{sub 0}{sup 2} is obtained through the saturated-liquid density data. The calculated results show that the correlation is able to predict experimental data within 4% with a maximum absolute deviation less than 9%. A procedure to calculate the surface tension without the saturated vapor density data is also presented.

• OSTI ID: 305484
• Journal Information: International Journal of Thermophysics, Vol. 19, Issue 5; Other Information: PBD: Sep 1998
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
REFRIGERANTS
MATERIAL SUBSTITUTION
CAPILLARY FLOW
SURFACE TENSION
CORRELATIONS
CALCULATION METHODS