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http://dx.doi.org/10.3795/KSME-B.2010.34.5.515

Experimental Study on the Air-Side Heat Transfer Characteristics of a Spirally-Coiled Circular Fin-Tube Heat Exchanger According to Geometric Parameters  

Kang, Tae-Hyung (Dept. of Mechanical Engineering, Korea Univ.)
Lee, Moo-Yeon (Dept. of Mechanical Engineering, Korea Univ.)
Kim, Yong-Chan (Dept. of Mechanical Engineering, Korea Univ.)
Yun, Sung-Jung (Research and Development Team, Korea Bundy Corporation)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.34, no.5, 2010 , pp. 515-522 More about this Journal
Abstract
The objective of this study is to investigate the air-side heat transfer characteristics of a spirally-coiled circular fin-tube heat exchanger for various geometric parameters under non-frosting conditions. The heat transfer characteristics of the heat exchanger were analyzed with respect to heat exchanger geometries, and then, the characteristics were compared with those of rectangular-plate fin-tube heat exchangers with discrete fins. The heat transfer coefficient increased with a decrease in the number of tube rows and an increase in the fin pitch. The optimum length of the L-foot was 2.7 mm. In addition, the heat transfer rate increased with a decrease in the tube pitch and the tube thickness. The heat transfer coefficient of the spirally-coiled circular fin-tube heat exchanger was 24.3% higher than that of the rectangular-plate fin-tube heat exchanger.
Keywords
Heat Transfer; Spirally-Coiled Circular Fin-Tube; Refrigerator; Heat Exchanger;
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