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http://dx.doi.org/10.3795/KSME-B.2010.34.2.113

An Experimental Study on the Evaporative Heat Transfer Characteristics of R-134a in a Micro-Channel Heat Exchanger  

Lee, Hae-Seung (Dept. of Mechanical Engineering, Korea Univ.)
Jeon, Dong-Soon (Energy System Technology Center, Korea Institute of Industrial Technology)
Kim, Young-Lyoul (Energy System Technology Center, Korea Institute of Industrial Technology)
Kim, Yong-Chan (Dept. of Mechanical Engineering, Korea Univ.)
Kim, Seon-Chang (Energy System Technology Center, Korea Institute of Industrial Technology)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.34, no.2, 2010 , pp. 113-120 More about this Journal
Abstract
An experimental investigation was carried out to examine the evaporative heat transfer characteristics of R-134a in a micro-channel heat exchanger. The micro-channel heat exchanger used in this study was a sort of plate heat exchanger. Micro-channels were fabricated on the SUS304 plate by the photo-etching process: 13 sheets of plates were stacked and bonded by the diffusion bonding process. The effects of the evaporating temperature, mass flux of R-134a, and inlet temperature of water were examined. As the difference between the inlet temperatures of R-134a and water increased, the heat transfer rate increased. The evaporative heat transfer coefficients obtained in this study range from 0.67 to 6.23 kW/$m^2{\cdot}^{\circ}C$. The experimental correlation for the Nusselt number as a function of the Reynold number and $\Theta$ was suggested for the micro-channel heat exchanger.
Keywords
Diffusion Bonding; Evaporative Heat Transfer Coefficient; Micro-channel; Printed Circuit Heat Exchanger;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By SCOPUS : 1
연도 인용수 순위
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