Compensation of flow maldistribution in fin-and-tube evaporators for residential air-conditioning

Publication: Research - peer-reviewJournal article – Annual report year: 2011

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Compensation of flow maldistribution in multi-channel fin-and-tube evaporators for residential air-conditioning is investigated by numerical modeling. The considered sources of maldistribution are distribution of the liquid and vapor phases in the distributor and non-uniform airflow distribution. Fin-and-tube heat exchangers usually have a predefined circuitry, however, the evaporator model is simplified to have straight tubes, in order to perform a generic investigation. The compensation of flow maldistribution is performed by control of the superheat in the individual channels. Furthermore, the effect of combinations of individual maldistribution sources is investigated for different evaporator sizes and outdoor temperatures. It is shown that a decrease in cooling capacity and coefficient of performance by flow maldistribution can be compensated by the control of individual channel superheat. Alternatively, a larger evaporator may be used.
Original languageEnglish
JournalInternational Journal of Refrigeration
Publication date2011
Volume34
Issue5
Pages1230-1237
ISSN0140-7007
DOIs
StateE-pub ahead of print

Bibliographical note

French title: Compensation de la mauvaise distribution de l’écoulement dans les évaporateurs à tubes ailetés utilisés dans le conditionnement d’air résidentiel

CitationsWeb of Science® Times Cited: 3

Keywords

  • Air-conditioning, Flow distribution, Compensation, Simulation, Finned tube, Modelling
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