CFD simulation of air to air enthalpy heat exchanger: Variable membrane moisture resistance

被引：34
作者：
Al-Waked, Rafat [1 ]
Nasif, Mohammad Shakir [2 ]
Morrison, Graham [3 ]
Behnia, Masud [4 ]
机构：
[1] ACK, Dept Mech Engn, Safat 13015, Kuwait
[2] Univ Teknol PETRONAS, Dept Mech Engn, Perak, Malaysia
[3] Univ New S Wales, Sch Mech & Mfg Engn, Sydney, NSW, Australia
[4] Univ Sydney, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW 2006, Australia
来源：
APPLIED THERMAL ENGINEERING | 2015年 / 84卷
关键词：
Energy recovery; CFA; Variable resistance heat exchanger; Conjugate heat transfer; Membrane; Conjugate mass transfer; ENERGY RECOVERY VENTILATOR; PERFORMANCE; SAVINGS;
D O I：
10.1016/j.applthermaleng.2015.03.067
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Conjugate heat and mass transfer processes across membrane heat exchangers of variable mass transportation resistance were investigated numerically. One half of flow channel for the hot stream and another for the adjacent cold stream were simulated. Effects of channel height, Reynolds number and flow direction on heat exchanger thermal effectiveness and energy recovered were studied. The validated CFD model showed that values of moisture resistance decrease with the increase in flow rates and/or the decrease in vapour mass fractions on both sides of the membrane. Furthermore, total hydraulic diameter effects on the thermal efficiency within membrane heat exchangers were found strong. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：301 / 309
页数：9
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