【摘要】 本文用改进ＰＴ方程对２２种常见低温流体的汽化潜热进行了计算．计算结果与原始ＰＴ方程、原始ＰＲ方程和改进ＰＲ方程计算结果的比较表明，用改进型ＰＴ方程所得的结果与实验值的偏差明显小于原始ＰＴ方程、ＰＲ方程和改进ＰＲ方程，特别是该方程对强极性物质、低温流体的汽化潜热计算，优越性更为显著．更多还原

【Abstract】 Abstract\ A modified Patel Teja type equation of state is extended to calculate the latent heat of 22 different kinds of refrigerants. The result of this calculation shows that the accuracy of modified Patel Teja equation of state is higher than that of PR1, PR2 and PT1 equation of state. According to the calculation, the accuracy of this equation is much higher than other three equations of state for cryogenic fluids.更多还原