Performance of residential air-conditioning systems with flow maldistribution in fin-and-tube evaporators
Publication: Research - peer-review › Journal article – Annual report year: 2011
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Performance of residential air-conditioning systems with flow maldistribution in fin-and-tube evaporators. / Kærn, Martin Ryhl; Brix, Wiebke; Elmegaard, Brian; Larsen, Lars Finn Sloth.
In: International Journal of Refrigeration, Vol. 34, No. 3, 2011, p. 696-706.Publication: Research - peer-review › Journal article – Annual report year: 2011
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TY - JOUR
T1 - Performance of residential air-conditioning systems with flow maldistribution in fin-and-tube evaporators
AU - Kærn,Martin Ryhl
AU - Brix,Wiebke
AU - Elmegaard,Brian
AU - Larsen,Lars Finn Sloth
N1 - Title in French: Performance des systèmes de conditionnement d’air résidentiels avec une mauvaise distribution de l’écoulement dans les évaporateurs à tubes ailetés Post-print: Creative Commons Attribution-Non-Commercial-No Derivatives
PY - 2011
Y1 - 2011
N2 - Refrigerant and airflow maldistribution in fin-and-tube evaporators for residential air-conditioning was investigated with numerical modeling. Fin-and-tube heat exchangers usually have a pre-defined circuitry. However, the objective in this study was to perform a generic investigation of each individual maldistribution source in an independent manner. Therefore, the evaporator and the condenser were simplified to be straight tubes for the purposes of this study. The numerical model of the R410A system, its verification and an investigation of individual maldistribution sources are presented in this paper. The maldistribution sources of interest were: inlet liquid/vapor phase distribution, feeder tube bending and airflow distribution. The results show that maldistribution reduced the cooling capacity and the coefficient of performance of the system. In particular, different phase distribution and non-uniform airflow distribution reduced the performance significantly. Different feeder tube bendings only caused a minor decrease in performance.
AB - Refrigerant and airflow maldistribution in fin-and-tube evaporators for residential air-conditioning was investigated with numerical modeling. Fin-and-tube heat exchangers usually have a pre-defined circuitry. However, the objective in this study was to perform a generic investigation of each individual maldistribution source in an independent manner. Therefore, the evaporator and the condenser were simplified to be straight tubes for the purposes of this study. The numerical model of the R410A system, its verification and an investigation of individual maldistribution sources are presented in this paper. The maldistribution sources of interest were: inlet liquid/vapor phase distribution, feeder tube bending and airflow distribution. The results show that maldistribution reduced the cooling capacity and the coefficient of performance of the system. In particular, different phase distribution and non-uniform airflow distribution reduced the performance significantly. Different feeder tube bendings only caused a minor decrease in performance.
KW - Air conditioning
KW - Simulation
KW - Finned tube
KW - Cooling
KW - Modeling
U2 - 10.1016/j.ijrefrig.2010.12.010
DO - 10.1016/j.ijrefrig.2010.12.010
M3 - Journal article
VL - 34
SP - 696
EP - 706
JO - International Journal of Refrigeration
T2 - International Journal of Refrigeration
JF - International Journal of Refrigeration
SN - 0140-7007
IS - 3
ER -