IIR document
Thermodynamic properties of HFO-1234yf (2,3,3,3-tetrafluoropropene).
Author(s) : TANAKA K., HIGASHI Y.
Summary
HFO-1234yf (2,3,3,3-tetrafluoropropene) is a promising alternative to HFC-134a for the air-conditioning system of automobiles. In this work, thermodynamic properties of HFO-1234yf at saturation conditions were measured. Critical properties, i.e., critical temperature, critical density, and critical pressure, were measured by the visual observation of the meniscus disappearance, and were determined to be 367.85 ±0.01 K, 478 ±3 kg/m3, and 3382 ±3 kPa, respectively. Vapour pressures were measured by a batch-type calorimeter with a metal-bellows in the temperature range from 310 K to 360 K. The present vapour pressure data were correlated by the Wagner-type equation. Surface tensions were measured by the differential capillary-rise method in the temperature range from 273 to 340 K and were correlated by the Van der Waals type equation. The acentric factor was determined to be 0.280 by the vapour-pressure correlation. Based on the critical parameters and acentric factor, saturated vapour and liquid densities were estimated by the Peng-Robinson equation and the Hankinson-Thomson equation, respectively. The heat of vaporization was also calculated from the Clausius-Clapeyron equation.
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Details
- Original title: Thermodynamic properties of HFO-1234yf (2,3,3,3-tetrafluoropropene).
- Record ID : 2009-2149
- Languages: English
- Source: 3rd Conference on Thermophysical Properties and Transfer Processes of Refrigerants
- Publication date: 2009/06/23
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Indexing
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Themes:
HFCs;
Mobile air conditioning - Keywords: R1234yf; Car; Measurement; Thermodynamic property; Equation of state; Refrigerant; Air conditioning
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