文献类型：期刊文献

英文题名：A GENERALIZED EQUATION OF STATE FOR LIQUID DENSITY CALCULATION

作者：LEE, HY; LIU, GJ

机构：[1]E CHINA UNIV SCI & TECHNOL,DEPT CHEM,SHANGHAI 200237,PEOPLES R CHINA

年份：1995

卷号：108

期号：1-2

起止页码：15

外文期刊名：FLUID PHASE EQUILIBRIA

收录：;WOS:【SCI-EXPANDED(收录号:WOS:A1995RE70600002)】；

语种：英文

外文关键词：THEORY; LIQUID; EQUATION OF STATE; DENSITY; CORRESPONDING STATES; INTERNAL PRESSURE; POLAR; NONPOLAR

摘要：A simple equation of state for liquids which combines the modified Rackett equation with a correlation of thermal pressure coefficients is proposed. This equation can predict the density of liquids at any pressure below the critical temperature, including the neighbourhood of critical point. The average absolute deviation between calculated and experimental densities for 2012 data points of 25 liquids, both polar and nonpolar, is 0.43% over the entire range of published data with a maximum pressure of 503 MPa and a maximum reduced temperature of 0.9971. Only the critical temperature and pressure and the saturated molar volume at one temperature for normal liquids in the region away from the critical point are needed for the calculation. More data are needed near the critical point or for strongly polar liquids. The other possible equations of state obtained in this way are also discussed.