析湿在翅片管换热器用作蒸发器时经常发生,对换热器的性能有重要影响。本文提出了能动态描述翅片管换热器空气侧析湿过程的数值模型,该模型不仅包括析湿过程中的传热传质模型,而且包括描述冷凝水滴形状和流动的运动模型。数值模型的计算精度较好,传热无量纲参数j_h和实验数据的平均相对误差为6.93%,传质无量纲参数j_m和实验数据的平均相对误差为12.1%。结果表明:该模型能准确描述翅片管空气侧析湿过程。 Dehumidification often occurs when finned tube heat exchangers are used as evaporators and has a significant effect on the performance of the heat exchangers. This paper presents a numerical model that can dynamically describe the air-side moisture desorption process of a fin-and-tube heat exchanger. The model includes not only the heat and mass transfer model during the desorption process but also the motion model that describes the shape and flow of the condensate droplets. The numerical model has better calculation accuracy, the average relative error of heat transfer dimensionless parameter j_h and experimental data is 6.93%, and the average relative error between mass transfer qualitative dimensionless parameter j_m and experimental data is 12.1%. The results show that this model can accurately describe the air-side moisture desorption process of finned tubes.