HFO-1336mzz(Z)环保制冷工质的PC-SAFT状态方程研究

Study of PC-SAFT equation of state for a new environment-friendly refrigerant HFO-1336mzz(Z)

以新型环保制冷工质HFO-1336mzz(Z)作为研究对象,采用链扰动统计缔合流体理论(PC-SAFT)状态方程,通过关联文献中的PVT数据,回归得到了HFO-1336mzz(Z)制冷工质的PC-SAFT状态方程参数。在此基础上,使用MATLAB软件编制了工质的PC-SAFT状态方程计算程序,得到了较为全面的HFO-1336mzz(Z)PVT数据。研究结果表明:PC-SAFT方程关联得到的饱和蒸汽压及饱和液体密度与文献值的平均相对偏差分别为0.40%和0.92%;同时,方程预测得到的压力及密度与文献值的平均相对偏差在超临界区分别为0.96%和1.35%,在液相区偏差分别为1.06%和1.67%。

The parameters of a PC-SAFT for HFO-1336 mzz(Z), an environmental-friendly substance for refrigerator, were obtained using literature data. Based on the PC-SAFT equation, the PVT properties of HFO-1336 mzz(Z) were calculated with the MATLAB program. The results show that the average relative deviations between the correlated results and literature data for the saturated vapor pressure and saturated liquid density are 0.40% and 0.92%, respectively. At the same time, the average relative deviations between the predicted results and literature data for pressure and density are 0.96% and 1.35% in the super critical region and 1.06% and 1.67% in the liquid region, respectively.