IIR document
Measurements of PvT properties, vapor pressures, and critical parameters for low GWP refrigerant R-1234ze(z).
Number: pap. n. TP-018
Author(s) : HIGASHI Y., HAYASAKA S., OGIYA S.
Summary
Measurements of PvT(pressure-density-temperature) properties and vapor pressures for new low GWP refrigerant R-1234ze(Z) (cis-1,3,3,3-tetrafluoroprop-1-ene; CF3CH=CHF) were made by the isochoric method. Pressure measurements were made by a digital quartz pressure transducer and pressure indicator. Temperature was measured with 25 O standard platinum resistance thermometer and thermometer bridge. Density was calculated from the sample mass and inner volume of pressure vessel. Nineteen vapor pressure data for R-1234ze(Z) were obtained in the temperature range from 310 K to 420 K, and pressure up to 3.33 MPa with individual three runs. On the basis of these vapor-pressure measurements, a correlation of vapor pressures was proposed. Two hundred and thirty-six PpT property data for R-1234ze(Z) were obtained in the temperature range from 310 K to 440 K, and pressure up to 6 MPa along eleven isochors. In addition, the critical temperature Tc, critical density pc, and critical pressure Pc were directly determined by the visual observation of meniscus disappearance.
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Details
- Original title: Measurements of PvT properties, vapor pressures, and critical parameters for low GWP refrigerant R-1234ze(z).
- Record ID : 30008097
- Languages: English
- Source: 4th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants
- Publication date: 2013/06/17
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