The heat‐transfer characteristics of polymer hollow fiber heat exchanger were investigated by analyzing the heat‐transfer coefficient (HTC) and the heat‐transfer resistance (HTR) distributions of both the lumen side and the shell side. The influences of the fiber wall thickness and the polymer thermal conductivity on the heat‐transfer performance were studied numerically based on the experimental validated simulation model. It is found that the original overall HTC value is below 1032 W/m²·K and the HTR is focus on the fiber wall. However, if enhancing the polymer thermal conductivity to be higher than 1.0 W/m·K and/or lowering the fiber wall thickness to be less than 0.1 mm, the overall HTC could be improved to over 2000 W/m²·K, which indicates that the fiber wall HTR is no longer the limiting factor of the polymer hollow fiber heat exchanger applications. © 2017 American Institute of Chemical Engineers AIChE J, 64: 1783–1792, 2018

中文翻译：

---

用于蒸发应用的聚合物中空纤维热交换器的传热特性

通过分析管腔侧和壳侧的传热系数（HTC）和传热阻力（HTR）分布，研究了聚合物中空纤维换热器的传热特性。在实验验证的仿真模型的基础上，数值研究了纤维壁厚和聚合物导热系数对传热性能的影响。发现原始的总体HTC值低于1032 W / m ² ·K，并且HTR集中在纤维壁上。但是，如果将聚合物导热系数提高到高于1.0 W / m·K和/或将纤维壁厚度降低到小于0.1 mm，则总HTC可以提高到2000 W / m ^2以上。·K，表明纤维壁HTR不再是聚合物中空纤维热交换器应用的限制因素。©2017美国化学工程师学会AIChE J，64：1783–1792，2018