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一、引言 流体热力性质的重要性及其计算的复杂性促使人们对热力性质计算进行研究与探讨。利用通用计算图进行计算是工程计算中常用的方法.然而以往文献在提出各自的通用计算图时(如以T_r,为参数、以p_r为横坐标的偏差函数图、逸度系数及压缩因子图等)都没有从各热力性质间的内在联系上构思、编绘,当需要同时进行几种热力性质的计算时就要用到几张有关的图,计算很不方便。
I. INTRODUCTION The importance of fluid thermodynamic properties and the complexity of their calculations have prompted people to study and discuss the calculation of thermodynamic properties. However, in the past literature, when put forward their common calculation graph (such as T_r, parameter of deviation function with p_r as abscissa, fugacity coefficient and compression factor graph Etc.) are not conceived and drawn from the internal relations among the thermodynamic properties. When several thermodynamic properties need to be calculated at the same time, several related graphs are used, which is very inconvenient to calculate.