Saturation properties of the refrigerant 143A |
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Authors: | K Srinivasan LR Oellrich |
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Affiliation: | Institut für Technische Thermodynamik und Kältetechnik, Universität Karlsruhe (TH), D-76128 Karlsruhe, Germany |
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Abstract: | 1,1,1-Trifluoroethane (CH3---CF3; R143a) is currently under consideration as a potential candidate as a component in refrigerant mixtures. Among other things, the accurate knowledge of saturation properties of the pure fluids is a pre-requisite for evaluation of mixture properties. There is a considerable amount of scatter in the available data for R143a. This article presents a conciliation of saturation property data for this refrigerant. Vapour pressures, saturated liquid and vapour densities have been correlated so that the ancilliary equations are related through a power β used for the temperature functions. The coefficients of the equations have been determined from a weighted least squares method using all the available data. The surface tension, viscosity and thermal conductivity in the saturated liquid phase have also been correlated. |
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Keywords: | saturation state R143a thermodynamic properties transport propertiesproprié té thermodynamique saturation |
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