In this study, performance enhancers (PEs) for dehumidifiers (DHs) were developed, and the PEs were installed on the return air side of the dehumidifier to test and evaluate the performance of the dehumidifier. The PEs were aluminum plates with different pore size distributions that were based on the return air distributions of an evaporator. The pore size was inversely proportional to the airflow resistance to improve the uniformity of the return air through the evaporator for achieving better heat exchange and condensation performance of the evaporator. The PEs used in this study were divided into 3 (PE1), 6 (PE2), and 11 (PE3) grades based on the return air velocity. The dehumidifier performance test was performed based on the CNS 12492 standard under standard and overload environmental conditions. The experimental results revealed that the dehumidifiers with PEs can improve the dehumidification capacity and energy factor (EF) of the dehumidifier under most experimental conditions, and the dehumidifiers with PEs exhibited higher performance enhancement under the overload environmental condition than under the standard environmental condition. The highest EF values of dehumidifiers with PEs can be increased by 5.46 % for PE1 and by 5.84 % for PE3 compared with the original dehumidifier under the same experimental parameters, respectively. Based on the average experimental results of standard and overload environmental conditions, PE1 exhibited the highest improvement up to 4.76 % in the EF of a dehumidifier.

在这项研究中，开发了用于除湿机（DH）的性能增强剂（PE），并将这些PE安装在除湿机的回风侧以测试和评估除湿机的性能。PE是具有不同孔径分布的铝板，其基于蒸发器的回风分布。孔径与气流阻力成反比，以提高通过蒸发器的回流空气的均匀性，从而实现蒸发器的更好的热交换和冷凝性能。根据回风速度，本研究中使用的PE分为3级（PE1），6级（PE2）和11级（PE3）。除湿器性能测试是基于CNS 12492标准在标准和过载环境条件下进行的。在大多数实验条件下，除湿器的EF）以及具有PE的除湿器在过载环境下的性能增强要比标准环境下的高。在相同的实验参数下，与原始除湿机相比，PE1的除湿机的最高EF值分别比PE1和PE3分别提高5.46％和5.84％。根据标准和过载环境条件下的平均实验结果，PE1在除湿机的EF中表现出最高的改善，最高可达4.76％。