Thermodynamic-property modeling of HFO-1234ze(E)+HFC-32 mixtures for evaluating cycle performance.

作者：Katsuyuki Tanaka, Y. Higashi, Ryo Akasaka · 发表于：Proceedings of the 23^rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development. · 年份：2011 · 被引用次数：4 · 研究领域：Refrigeration and Air Conditioning Technologies、Thermodynamic and Exergetic Analyses of Power and Cooling Systems、Advanced Thermodynamic Systems and Engines

Thermodynamic-property modeling of HFO-1234ze(E)+HFC-32 mixtures was carried out by optimizing the adjustable parameters of the Knuz and Wagner model on the basis of experimental data. Average absolute-deviations in calculated values using the mixture model from experimental data are 0.2% in density, 2.6% in specific heat at constant pressure, 0.7% in bubble-point pressure, 3.7% in the heat capacity of saturated liquid, and 0.2% in the density of saturated liquid. The performance of refrigeration cycles using HFO-1234ze(E)+HFC-32 mixtures as a working fluid was calculated changing mixture composition. This calculation has shown that maximum COP is obtained at the mass fraction of w = 0.89 of HFO-1234ze(E).