新的液体密度方程式

A NEW DENSITY EQUATION OF LIQUID

一、引言 以液体为工质的流体机械在各类工业生产中占有极为重要的地位,其中尤以各种类型的工业用泵最为突出,其所消耗的能量在生产总能耗中占有十分显著的比重。由于各类液泵机械运行时往往要求严格地控制在非饱和的状态下,因此。

Based on the molecular free-volume model of liquid in statistical mechanics and derived from a concise liquid EOS proposed by our research group in 1989 , a new density equation of liquid is proposed in this paper. This new density equation is not only very simple in form but also quite convenient to practice.Since the unsaturated-state water is one of most complex polar working medium with wide and broad utilization in fluid machinery field, as an illustration, the values of corresponding coefficients in the new proposed equation (20) and (21) applied to unsaturated-state water under engineering condition have to propose in this paper. Results computed from this new procedure, show that the new proposed equation is satisfied well with the accuracy requirement in engineering.