发展马丁-侯方程作为水的专用方程

发展了适用于极性物质水的MH方程。由线性最小二乘法拟合单相区和汽液共存区的PVT及相平衡数据 ,得到方程常数 ,并用统计方法检验了方程的有效性。计算结果表明 ,饱和蒸汽压和摩尔体积误差一般小于0 .6。单相区体积和压力平均误差分别为 0 .3 %和 2 .5 %。与Bender方程相比 ,新方程准确度更高

Development of Martin-Hou Equation of State for Water

Martin-Hou was expanded as the equation of state for the polar fluid, water. The constants of the equation of state were fitted to experimental P-V-T data at single and vapor liquid co-existing phase, and their effectiveness was checked by the statistical method. Satisfactory results were obtained for the gaseous as well as the liquid region. The deviations of vapor pressure and saturated molar volumes are typically less than 0.6%, and the calculated volume and pressure in single phase deviate from those of literature by about 0.3% and 2.5% respectively.Compared with the Bender′s equation of state, the presented one gives better results in describing the properties of water.