【摘要】 以文献提供的大量精确pVT实验数据为基础,拟合了制冷工质七氟丙烷HFC-227ea的modified benedict-webb-rubin(MBWR)状态方程,给出了32个参数值.该方程适用压力从0.03至53 MPa,密度从2.9至1 800 kg/m3,温度从204至473 K.将该方程计算的HFC-227ea的pVT数据与实验数据比较后表明:两者的气相压力平均绝对值偏差为0.296%,饱和蒸气压平均绝对值偏差为0.213%,液相密度平均绝对值偏差为0.148%.更多还原

【Abstract】 pVT experimental data of HFC-227ea published in literature were collected,and then modified benedict-webb-rubin(MBWR) equation of state of HFC-227ea was fitted.Moreover,the values of 32 parameters in MBWR equation were obtained.This equation is suitable for conditions of the pressure from 0.03 MPa to 53 MPa,density from 2.9 kg/m~3 to 1 800 kg/m~3,and temperature from 204 K to 473 K.The average absolute deviations of this equation for gaseous phase pressure,vapor pressure and liquid density are 0.296%,0.213% and 0.148%,(respectively.)更多还原