TY - JOUR
T1 - CFD simulation of air to air enthalpy heat exchanger
T2 - variable membrane moisture resistance
AU - Al-Waked, Rafat
AU - Nasif, Mohammad Shakir
AU - Morrison, Graham
AU - Behnia, Masud
PY - 2015/6/5
Y1 - 2015/6/5
N2 - 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.
AB - 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.
KW - CFD
KW - Conjugate heat transfer
KW - Conjugate mass transfer
KW - Energy recovery
KW - Membrane
KW - Variable resistance heat exchanger
UR - http://www.scopus.com/inward/record.url?scp=84927772314&partnerID=8YFLogxK
U2 - 10.1016/j.applthermaleng.2015.03.067
DO - 10.1016/j.applthermaleng.2015.03.067
M3 - Article
AN - SCOPUS:84927772314
SN - 1359-4311
VL - 84
SP - 301
EP - 309
JO - Applied Thermal Engineering
JF - Applied Thermal Engineering
ER -