Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
권호 표지
DOI QR코드

DOI QR Code

A Development of Heat Exchanger by using Small Bore Two-Port Tube

연결세경관을 이용한 열교환기의 개발

  • Lee, Sangmu (Shizuoka Works, Mitsubishi Electric Corp.) ;
  • Park, Byung-Duck (Department of Automotive Engineering, Kyungpook National University)
  • 이상무 (미쯔비시전기(주) 시즈오까제작소) ;
  • 박병덕 (경북대학교 자동차공학부)
  • Received : 2014.09.18
  • Accepted : 2014.10.30
  • Published : 2015.02.10
Download PDF
⟨ Previous Next ⟩

Abstract

The fin and tube type heat exchangers widely used in air conditioners have been developed to improve on the heat transfer performance and compactness. This study presents the new type of tube for the heat exchanger to improve the heat transfer performance by increasing the heat transfer area per unit volume in the air-conditioner heat exchanger. The new type tube can be used for mechanical expansion facility, due to the two-port copper tube. Numerical calculation shows that the heat exchanger using the two-port copper tube outperforms the conventional heat-exchanger using a circular copper tube, in terms of the increased heat transfer coefficient and higher pressure drop. The calculation results were experimentally validated and are in agreement with the experimental results. Compared to the heat exchanger using a conventional circular tube, the heat exchanger with a two-port tube increased the heat transfer coefficient up to 21%, and the pressure dropped up to 16%.

Keywords

References

  1. Kim, M. H., 2008, The recent movements of heat exchanger development, Magazine of the SAREK, Vol. 37, No. 2, pp. 4-41.
  2. Shikazono, N., 2000, Heat exchangers for air conditioners, Refrigeration, Vol. 75, No. 875, pp. 2-7.
  3. Oh, S. K., Jin, D. H., Jang, D. Y., and Oh, S. Y., Cho, K. S., 2001, A development of small bore tube heat exchanger, Proceedings of the SAREK 2001 Summer Conference, pp. 607-611.
  4. Shikazono, N., Okawa, D., Kobayashi, M., and Kasagi, N., 2006, Proposal and assessment of high performance finless heat exchanger composed of micro tubes, Transactions of the Japan Society of Mechanical Engineers Series B, Vol. 72, No. 717, pp. 187-194. https://doi.org/10.1299/kikaib.72.187
  5. Oku, T., Kasagi, N. and Suzuki, Y., 2003, Optimum design of micro bare-tube heat exchanger, Transactions of the Japan Society of Mechanical Engineers Series B, Vol. 69, No. 686, pp. 137-144.
  6. Fujino, H., Kim, H., Yoshioka, S., and Nakata, H., 2009, Heat transfer characteristics of a heat exchanger consisting of plate fins having refrigerant flow inside, Proceedings, 46th National Heat Transfer Symposium of Japan, Vol. 46, pp. 619-620.
  7. Lee, S. M. and Park, B. D., 2012, Heat transfer characteristics of the non-uniform grooved tube considering tube expansion, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 24, No. 7, pp. 553-559. https://doi.org/10.6110/KJACR.2012.24.7.553
  8. ASME, 1985, Supplement on instruments and apparatus :Part 1 Measurement uncertainty, American Society of Mechanical Engineers, New York.
  9. JSME, 1986, JSME Data book-Heat transfer, 4th edition, The Japan Society of Mechanical Engineers, Tokyo, pp. 30-31.

Cited by

  1. Recent Progress in Air-Conditioning and Refrigeration Research : A Review of Papers Published in the Korean Journal of Air-Conditioning and Refrigeration Engineering in 2015 vol.28, pp.6, 2016, https://doi.org/10.6110/KJACR.2016.28.6.256