Performance testing of 2-fluid and 3-fluid liquid-to-air membrane energy exchangers for HVAC applications in cold-dry climates
Performance testing of 2-fluid and 3-fluid liquid-to-air membrane energy exchangers for HVAC applications in cold-dry climates
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DOI：
10.1016/j.ijheatmasstransfer.2016.09.024
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发表时间：
2017-03-01
影响因子：
5.2
通讯作者：
Simonson, Carey J.
中科院分区：
文献类型：
--
作者：
Abdel-Salam, Mohamed R. H.;Besant, Robert W.;Simonson, Carey J.
液-空气膜能量交换器（LAMEE）可以通过使用半透膜分离空气和干燥剂溶液流来避免干燥剂液滴残留的问题。本研究的目的是测试和比较新型 3 流体 LAMEE 和 2 流体 LAMEE 在空气加热和加湿条件下空气和干燥剂溶液之间的热和湿传递性能。估计了流量分布不均对 3 流体 LAMEE 性能恶化的影响，并提出了膜预张力以减少平板 LAMEE 中由膜偏转引起的流量分布不均的可行性的实验研究。与最低可能出口热流体温度等于入口冷流体温度的热交换器不同，实验数据表明，2 流体 LAMEE 中的出口干燥剂溶液（热流体）温度可能低于入口空气（冷流体）温度。这是由于与空气加湿过程相关的相变能量的影响。 (C) 2016 Elsevier Ltd. 保留所有权利。
Liquid-to-air membrane energy exchangers (LAMEEs) can avoid the problem of desiccant droplets carryover by using semi-permeable membranes to separate the air and desiccant solution streams. The aim of this study is to test and compare the heat and moisture transfer performances between the air and desiccant solution inside a novel 3-fluid LAMEE and a 2-fluid LAMEE under air heating and humidifying conditions. The effect of flow maldistribution on the deterioration of the 3-fluid LAMEE's performance is estimated, and an experimental study of the feasibility of membrane pre-tension to reduce flow maldistribution caused by membrane deflections in flat-plate LAMEEs is presented. Unlike heat exchangers where the lowest possible outlet hot fluid temperature is equal to the inlet cold fluid temperature, experimental data show that the outlet desiccant solution (hot fluid) temperature in the 2-fluid LAMEE may be lower than the inlet air (cold fluid) temperature. This is attributed to the effect of the phase change energy associated with the air humidification process. (C) 2016 Elsevier Ltd. All rights reserved.