Comparison of fin-and-tube interlaced and face split evaporators with flow mal-distribution and compensation

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Abstract

Flow mal-distribution in fin-and tube evaporators for residential air-conditioning is investigated by numerical simulation. In particularly, the interlaced and the face split evaporator are compared in flow maldistribution conditions. The considered sources of mal-distribution are: Liquid/vapor distribution and airflow distribution. Furthermore, compensation of flow mal-distribution by control of individual channel superheat is studied for each type of evaporator. It is shown that the interlaced evaporator is better at flow maldistribution than the face split evaporator. However, if individual channel superheats are controlled, the face split evaporator achieves the best performance, i.e. an increase of 7% in UA-value and 1.6% to 2.4% in COP compared to the interlaced evaporator without compensation.
Original languageEnglish
Title of host publicationICR 2011
Publication date2011
Publication statusPublished - 2011
Event23rd IIR International Congress of Refrigeration - Prague, Czech Republic
Duration: 21 Aug 201126 Aug 2011
Conference number: 23
http://www.icr2011.org/

Conference

Conference23rd IIR International Congress of Refrigeration
Number23
CountryCzech Republic
CityPrague
Period21/08/201126/08/2011
Internet address

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