CONVERGING MINICHANNEL EFFECTS IN THE CONDENSER OF A SMALL CPL HEAT PIPE

Title
CONVERGING MINICHANNEL EFFECTS IN THE CONDENSER OF A SMALL CPL HEAT PIPE
Authors
강상우김진호이승철
Keywords
duct flow; heat of fusion; latent heat; Rib turbulator
Issue Date
2011-03
Publisher
International journal of air-conditioning and refrigeration
Citation
VOL 19, NO 1, 17-24
Abstract
Microchannels or minichannels are widely used for cooling high density power electronic devices, such as heat pipes and heat exchangers. The interfacial behaviors between liquid and gas phases are very important to understand the flow characteristics in microchannels or minichannels. One of the problems at the capillary pumped loop (CPL) heat pipes is the back°ow of vapor through the liquid line toward the evaporator. Therefore, we applied the converging minichannels at the condenser to avoid the back°ow. In this paper, a numerical analysis on the interfacial velocities and the total pressures depending on variations of the converging rate and the depth of the minichannels was performed. It was shown that the converging minichannels can reduce the backflow effect. The proper dimension of the minichannels to reduce the vapor backflow was also found.
URI
http://pubs.kist.re.kr/handle/201004/39763
ISSN
2010-1325
Appears in Collections:
KIST Publication > Article
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