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为了更好地应用Teja方程预测制冷工质在低温区域和临界温度附近的饱和蒸气压,基于对比态原理提出了一种新特性因子,用于替代Teja方程中的偏心因子,修正后的方程及原方程与实验数据比较后表明:在中温区域(对比温度在0.6～0 8之内)两者的计算精度相当;而在低温区域(对比温度小于0.6)和临界温度附近(对比温度大于0.8)修正后方程的计算精度有着明显的提高。
In order to better apply the Teja equation to predict the saturated vapor pressure of refrigerant in the low temperature range and the critical temperature, a new characteristic factor is proposed based on the principle of the ratio to replace the eccentricity factor in Teja equation, the modified equation and The comparison between the original equation and the experimental data shows that the calculation accuracy of the two equations is comparable in the medium temperature range (the contrast temperature is within 0.6 ~ 0.8), while in the low temperature range (the contrast temperature is less than 0.6) and the critical temperature (the contrast temperature is greater than 0.8) The corrected accuracy of the equation has been significantly improved.