本文基于乙二醇/水与丙三醇/水两组二元体系在不同温度下的实验数据,对超额焓数据应用局部作用模型拟合,并分析拟合效果与拟合参数变化情况,发现Wilson模型拟合效果较好。通过Wilson方程的活度系数表达形式,推算了两组体系的气液平衡,并进而计算了两组体系的焓浓图与[火用]浓图。
Local contribution models were used to fit the excess enthalpy data of glycol/water and glycerol/water systems previously tested. The optimal Wilson model was regressed of its parameters for vapor-liquid equilibrium calculation. Through the obtainment of VLE data, the enthalpy-concentration data and exergy-concentration data were calculated further. Finally the enthalpy-concentration diagrams and exergy-concentration diagrams were achieved.