两种叉流式间接蒸发冷却器的火用分析比较-《集美大学学报（自然科学版）》

文章信息/Info

Title:: Exergetic Performance Comparison of Two Cross-Flow Indirect Evaporative Coolers

作者:: 王玉刚1; 2; 闵韵然1; 2; 1.集美大学海洋装备与机械工程学院，福建厦门 361021；2.福建省能源清洁利用与开发重点实验室，福建厦门 361021

Author(s):: WANG Yugang 1; 2; MIN Yunran1; 2; 1.College of Marine Equipment and Mechanical Engineering,Jimei University,Xiamen 361021,China；2.Key Laboratory of Clean Energy Utilization and Development of Fujian Province,Xiamen 361021,China

Keywords:: indirect evaporative cooler; exergy analysis; cross-flow; dew-point

摘要:: 为了明确叉流式露点间接蒸发冷却器和传统间接蒸发冷却器能量利用特性的差异，建立了间接蒸发冷却器的火用分析模型。在预设条件下，计算了两种冷却器的有效输出火用、输入火用、火用损失、火用效率，并对计算结果进行了对比分析。结果显示,在输入火用相等的情况下，露点间接蒸发冷却器的有效输出火用和火用效率较传统间接蒸发冷却器分别提高8.19%、2.5%；两种冷却器的热力性能存在显著差异，露点间接蒸发冷却器的排风火用损失大于传统间接蒸发冷却器，但其内部火用损失小于传统间接蒸发冷却器。由于两种冷却器的热力性能特点不同，其适用场景因而也不同。

Abstract:: To clarify the disparities in energy utilization between cross-flow dew-point indirect evaporative coolers (IECs) and conventional IECs,an exergy analysis model for IECs was established.Under the designated operating conditions,this model was applied to calculate the specific exergy,specific exergy destruction and exergy efficiency of both humid air and water streams in the two types of IECs,with a subsequent comparative analysis conducted on the calculation results.The results demonstrated that at an equal input exergy,the dew-point IEC achieves an increase of approximately 8.19% in useful output exergy and an improvement of around 2.5% in exergy efficiency compared with that of the conventional IEC.There are significant thermodynamic performance disparities between the two IECs,the dew-point IEC exhibits high exergy destruction in the exhaust air,its internal exergy destruction is lower,each type of IEC has its own applicable scenarios.