Abstract:

The ［bmim］Cl/CH₃OH solution as working fluid for absorption refrigeration is proposed and its application potentials are analyzed in different aspects.The vapor-liquid equilibrium, heat capacity, viscosity and density of ［bmim］Cl/CH₃OH solution were measured respectively with saturation vapor pressure determination system, DSC, Ubbelohde viscometers and pycnometers in the temperature range from 293.15 K to 353.15 K.The NRTL model parameters of vapor-liquid equilibrium and the empirical correlations for heat capacity, viscosity and density as functions of temperature and concentration were obtained.The results revealed that the properties of ［bmim］Cl/CH₃OH solution can meet the requirements of ideal working fluid for absorption refrigeration and has great application potentials in absorption refrigeration.

Key words:

离子液体, 汽液平衡, 比热容, 黏度, 密度, 吸收式制冷

摘要：

提出将［bmim］Cl/CH₃OH应用为吸收式制冷工质对，并从多角度对其应用潜能进行分析。采用静态法饱和蒸气压测定装置、DSC、乌氏黏度计和比重瓶等测定了293.15～353.15 K温度范围内［bmim］Cl/CH₃OH溶液的汽液平衡、比热容、黏度和密度，拟合得到溶液汽液平衡的NRTL模型参数以及比热容、黏度、密度随浓度和温度的经验关联式。结果表明：［bmim］Cl/CH₃OH溶液的性质满足理想吸收式制冷工质对的要求，在吸收式制冷中有较大的应用潜能。

关键词:

离子液体, 汽液平衡, 比热容, 黏度, 密度, 吸收式制冷