中文摘要：

从溶液物性和制冷系统方面介绍了氨水吸收式制冷的研究现状,着重讨论了制冷剂对系统性能的影响,归纳了通常采用板效率修正平衡级模型进行精馏设备设计的方法,指出采用基于速率的非平衡级模型可描述系统中制冷剂实际的提纯过程,为改进氨精馏塔的设计提供参考.

英文摘要：

The study on ammonia refrigeration system was introduced from the refrigerant physical property and the refrigeration system; and the refrigerant purity＇s influence on the system property was mainly discussed to show that the distillation equipment can employ the plate equilibrium model for the correction,and the velocity-based non-equilibrium model can describe the refrigerant purification process in the system so as to provide the reference for the improvement on the rectification column.