【摘要】 基于现有的pvT和导出性质实验数据,拟合了一个HFC-227ea的35项专用状态方程。本方程适用于HFC-227ea压力从零至65MPa,密度从零至1730 kg.m_-3,温度从204至423 K整个流体区域的热力学性质计算。通过与实验结果比较,检验了对HFC-227ea各种热力学性质的计算精度,包括pvT性质、比定压热容、声速、焦汤系数、饱和蒸气压等,结果表明本方程具有很高的精度。更多还原

【Abstract】 A 35-coefficient equation of state for HFC-227ea has been developed, based on the updated available measurements of pvT and derived properties. The equation of state is effective at pressures up to 65 MPa, densities up to 1730 kg.m-3, and temperatures from 204 to 423 K, respectively. Comparisons of various thermodynamic properties of HFC- 227ea, such as pvT, isobaric heat capacity, speed of sound, Joule-Thomson coefficient, vapor pressure, between experimental data and calculated values of the equation of state are also presented. The results show that the equation of state has a very good precision for representing thermodynamic properties of HFC-227ea.更多还原