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EQUATIONS FOR REFRIGERANTS R32 AND R125 THERMAL CONDUCTIVITY CALCULATION

Journal: REFRIGERATION ENGINEERING AND TECHNOLOGY (Vol.50, No. 6)

Publication Date:

Authors : ;

Page : 10-13

Keywords : Refrigerants ? R32 ? R125 ? Thermal conductivity ? Equations.;

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Abstract

Equations for thermal conductivity of alternative refrigerants R32and R125 for variable temperature and density were worked out. The reliable equation of state was used for each refrigerant. Coefficients of the equations were determined by least-square method on the experimental data. The equations describe the thermal conductivity in the temperature range from 223 to 466 K at pressure up to 50 MPa for R32and from 228 to 513 K at pressure up to 53 MPa for R125. The accuracy of the equations is acceptable for engineering calculations.

Last modified: 2015-01-17 17:00:04