Experimental study on the air-side heat transfer characteristics of a spirally-coiled circular fin-tube heat exchanger according to geometric parameters
- Authors
- Kang, T.; Lee, M.; Kim, Y.; Yun, S.
- Issue Date
- 2010
- Keywords
- Heat exchanger; Heat transfer; Refrigerator; Spirally-coiled circular fin-tube
- Citation
- Transactions of the Korean Society of Mechanical Engineers, B, v.34, no.5, pp.515 - 522
- Indexed
- SCOPUS
KCI
- Journal Title
- Transactions of the Korean Society of Mechanical Engineers, B
- Volume
- 34
- Number
- 5
- Start Page
- 515
- End Page
- 522
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/118372
- DOI
- 10.3795/KSME-B.2010.34.5.515
- ISSN
- 1226-4881
- Abstract
- The objective of this study is to investigate the air-side heat transfer characteristics of a spirally-coiled circular fintube 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 spirallycoiled circular fin-tube heat exchanger was 24.3% higher than that of the rectangular-plate fin-tube heat exchanger.
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