R152a-DMF体系汽液相平衡研究  

Vapor-Liquid Equilibrium(VLE) for the System 1,1-Difluoroethane-N,N-Dimethylformamide

作　　者：李新如[1] 沈彦曙[1] 孟学林[1] 圣磊[1] 郑丹星[1] 

机构地区：[1]北京化工大学,北京100029

出　　处：《工程热物理学报》2013年第3期389-392,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金项目(No.50890184);国家重点基础研究发展计划(No.2010CB227304)

摘　　要：本文通过静态法高压汽液相平衡装置测定了温度293.15～353.15 K,压力0.1～2.1 MPa条件下R152a-DMF体系的汽液相平衡数据。采用逸度系数法中的PR、SRK状态方程,活度系数法中的NRTL、Wilson模型分别对该体系的汽液相平衡实验数据进行了关联计算,结果表明,Wilson模型能更好地描述该体系在实验温度、压力下的汽液相平衡数据。The vapor-liquid equilibrium data for R152a-DMF system were determined by a high pressure vapor-liquid equilibrium device at temperature 293.15-353.15 K and pressure 0.1-2.1 MPa conditions, using a static method. The system VLE data were correlated by PR and SRK equations of state in fugacity coefficient method, and NRTL and Wilson models in activity coefficient model. The result shows that VLE data for R152a-DMF system can be well regressed by Wilson model, which can best describe the VLE data of the system under the experimental temperature and pressure.

关 键 词：R152a-DMF 汽液相平衡 PR SRK状态方程 NRTL Wilson模型 

分 类 号：TK123[动力工程及工程热物理—工程热物理]