Polymer heat exchangers are gaining increasing attention in the field of air cooling applications. This paper aims to present a parametrical analysis on a membrane-based semi-direct evaporative cooler (MSDEC) with internal baffles. A mathematical model has been established to achieve an in-depth understanding of the heat and mass transfer process of the proposed MSDEC. An experimental system has been employed to study the evaporative cooling performance of the hollow fiber module and validate the mathematical process. Simulation results demonstrated that the installation of baffles can improve the wet-bulb effectiveness by up to 32%. In addition, the developed model is adopted to study the air treatment performance of the MSDEC with baffles by evaluating the influence of various essential parameters including the fiber length, the number of fiber rows, the fiber row spacing, the geometrical dimension of baffles, and the inlet air velocity.

聚合物热交换器在空气冷却应用领域中越来越受到关注。本文旨在对带有内部挡板的基于膜的半直接蒸发冷却器（MSDEC）进行参数分析。已经建立了数学模型，以深入了解所提议的MSDEC的传热和传质过程。实验系统已用于研究中空纤维组件的蒸发冷却性能并验证数学过程。仿真结果表明，安装挡板可以将湿球效率提高多达32％。此外，采用开发的模型通过评估各种基本参数（包括纤维长度）的影响来研究带挡板的MSDEC的空气处理性能，