Experimental Study of PVTx Properties in the Gas Phase for Binary Mixtures of DME and HFC-134a

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• 作者：Qi Chen ; Zhenqian Deng ; Jie Wu ; Ronghua Hong ; Guangming Chen
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2016
• 出版时间：March 10, 2016
• 年：2016
• 卷：61
• 期：3
• 页码：1328-1332
• 全文大小：243K
• ISSN：1520-5134

文摘

This experimental study measured the pressure–volume–temperature–composition (PVTx) properties in the gas phase for the binary system of dimethyl ether (DME) + 1,1,1,2-tetrafluoroethane (HFC-134a) at temperatures between 313.53 and 383.49 K, pressures between 541.8 and 3170.2 kPa, densities between 0.2311 and 1.4831 mol·dm^–3, and compositions between 0.2326 and 0.8258 mole fractions of HFC-134a by using the isochoric method. The data were obtained with standard uncertainties of 1.5 kPa for pressure, 0.006 K for temperature, and 0.00025 for composition. Further, a truncated virial equation of state was developed for the binary DME/HFC-134a system by data fitting. The deviations generated by this equation turned out to be within ±0.13% in pressure and ±0.15% in density.