多组元液体混合物的理论极限过热度

1引言纯物质液体的极限过热度问题研究，已引起人们充分重视。通常研究液体过热的方法分为热力学极限和动力学极限过热度方法。但这两种方法并不能真正确定液体的极限过热度。为此，本文作者之一提出了一个假说，并从统计热力学涨落理论出发，建立了一个确定液体极限过热度的新方法山。文献［2］中的计算证实了新方法的正确性。一定条件下，当多组元液体混合物中发生核化时，存在与纯质液体核化不同的效应，即气相也是混合物。气核内部各组元成份通常与液体对应组元的成份不同。其原因在于不同组元具有不同挥发性。因此，相平衡条件必须包括…

DETERMINATION OF THEORETICAL SUPERHEAT LIMIT OF MULTICOMPONENT MIXTURE OF LIQUIDS

The superheat limit of mixture of liquids is determined on the basis of fluctuation theory of statistical thermodynamics. By the help of derived relations and P-R Equation of State the superheat limits of 10 groups of binary mixture of liquids were calculated and compared with the experimental data offered by the reference. The average deviation between calculated values of superheat limit and experimental ones is less than 1.78% and the maximumdeviation is less than 3.88%. The expressions given in the paper are universal and applicable for any mixture of liquids to predict their superheat limit.