Numerical Study on the Performance of a Microchannel Heat Exchanger with a Novel Channel Array

Title
Numerical Study on the Performance of a Microchannel Heat Exchanger with a Novel Channel Array
Authors
전승원이규정문동주
Keywords
Microchannel; HeaT Exchanger; Channel Array; Thermal Resistance
Issue Date
2011-11
Publisher
대한기계학회논문집A (Transactions of the Korean Society of Mechanical Engineers A)
Citation
VOL 35, NO 11, 1119-1123
Abstract
In conventional microchannel heat exchangers, only one kind of fluid (hot or cold) flows in each plate. The channels contain different kinds of fluid depending on the vertical position, but they have the same kind of fluid at all horizontal positions. Therefore, there is a slower heat transfer rate in the horizontal direction than in the vertical direction. We propose a microchannel heat exchanger in which hot and cold fluid flows alternately in each plate to improve the thermal performance. This novel channel array requires a special design for the inlet and outlet. The proposed channel array has a faster heat transfer rate than a conventional channel array. The thermal performance of the novel channel array increases with increasing Reynolds number and Prandtl number, but it decreases as the ratio of solid to fluid thermal conductivity increases.
URI
http://pubs.kist.re.kr/handle/201004/43941
ISSN
12264873
Appears in Collections:
KIST Publication > Article
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