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http://dx.doi.org/10.3795/KSME-B.2008.32.12.915

Heat Transfer Characteristics and Pressure Drop in Straight Microchannel of the Printed Circuit Heat Exchangers  

Kim, Yoon-Ho (고려대학교 대학원 기계공학과)
Seo, Jung-Eun (고려대학교 대학원 기계공학과)
Choi, Young-Jong ((주) 이노윌)
Lee, Kyu-Jung (고려대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.32, no.12, 2008 , pp. 915-923 More about this Journal
Abstract
The performance experiments for a microchannel printed circuit heat exchanger (PCHE) of high-performance and high-efficiency on the two technologies of micro photo-etching and diffusion bonding were performed in this study. The microchannel PCHE were experimentally investigated for Reynolds number in ranges of 100 $\sim$ 700 under various flow conditions in the hot side and the cold side. The inlet temperatures of the hot side were conducted in range of $40^{\circ}C\;{\sim}\;50^{\circ}C$ while that of the cold-side were fixed at $20^{\circ}C$. In the flow pattern, the counter flow was provided 6.8% and 10 $\sim$ 15% higher average heat transfer rate and heat transfer performance than the parallel flow, respectively. The average heat transfer rate, heat transfer performance and pressure drop increases with increasing Reynolds number in all the experiment. The increasing of inlet temperature in the experiment range has not an effect on the heat transfer performance while the pressure drop decrease slightly with that of inlet temperature. The experimental correlations to the heat transfer coefficient and pressure drop factor as a function of the Reynolds number have been suggested for the microchannel PCHE.
Keywords
Microchannel; Printed Circuit Heat Exchanger; Micro Photo-Etching; Diffusion Bonding;
Citations & Related Records

Times Cited By SCOPUS : 1
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