CAJ | 학술논문

在对14种制冷剂(R152a、R123、R141b、R11、R12、R125、R22、R32、R143a、R227ea、R236ea、R236fa、R245ca、R245fa)的液相黏度实验数据进行收集的基础上,将摩擦理论与工程上常用的PR方程相结合,建立了这14种制冷剂的液相黏度模型,并通过最小二乘法回归得到了模型中的各系数.结果表明,在拟合范围内,这14种制冷剂的稀薄气体黏度计算值与文献值的绝对平均偏差在1%以内,各制冷剂液相黏度计算值与实验值的绝对平均偏差在0.31%～1.92%之间,能够满足实际工程需要.
재대14충제랭제(R152a、R123、R141b、R11、R12、R125、R22、R32、R143a、R227ea、R236ea、R236fa、R245ca、R245fa)적액상점도실험수거진행수집적기출상,장마찰이론여공정상상용적PR방정상결합,건립료저14충제랭제적액상점도모형,병통과최소이승법회귀득도료모형중적각계수.결과표명,재의합범위내,저14충제랭제적희박기체점도계산치여문헌치적절대평균편차재1%이내,각제랭제액상점도계산치여실험치적절대평균편차재0.31%～1.92%지간,능구만족실제공정수요.
The experimental liquid viscosity data of 14 pure refrigerants(R152a, R123, R141b, R11, R12, R125, R22, R32, R143a, R227ea, R236ea, R236fa, R245ca, and R245fa) are collected, and then a liquid viscosity model of the refrigerants is established using the friction theory in conjunction with the Peng-Robinson(PR) equation of state. The coefficients of the viscosity model are obtained using the least square method. The results show that all the average absolute deviations between the viscosity values calculated and the data in literature for the refrigerants in the dilute gas phase are less than 1%. In addition, all the average absolute deviations between the measurements and the viscosity values calculated with the present model for the refrigerants in the liquid phase are 0.31%-1.92%.