论文信息 - Vapor Pressure Measurements of 1,1,1,2,3,3,3-Heptafluoropropane from 233.15 to 375.15 K

Vapor Pressure Measurements of 1,1,1,2,3,3,3-Heptafluoropropane from 233.15 to 375.15 K

The vapor pressures of 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea) were measured in the temperature range from 233.15 to 375.15 K. The uncertainties of the measurements were estimated to be within ±1.5 kPa for pressure and within ±5 mK for temperature. The purity of the HFC-227ea sample used in the present measurements was 99.9 mol %. A Wagner-type vapor pressure equation for HFC-227ea was developed. The critical pressure was calculated from the vapor pressure equation at the critical temperature. The normal boiling point and acentric factor were also determined.

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