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Performance Test of a Fan Coil with an Oval-Type Heat Exchanger

타원관 열교환기를 적용한 팬코일 성능 시험

  • Yoon, Jeadong (Graduate School of Energy and Environment, Seoul National University of Science and Technology) ;
  • Lee, Seunghyun (Graduate School, Seoul National University of Science and Technology) ;
  • Sung, Jeayong (Department of Mechanical and Automotive Engineering, Seoul National University of Science and Technology) ;
  • Lee, Myeong Ho (Department of Mechanical and Automotive Engineering, Seoul National University of Science and Technology)
  • 윤재동 (서울과학기술대학교 에너지환경대학원) ;
  • 이승현 (서울과학기술대학교 대학원) ;
  • 성재용 (서울과학기술대학교 기계자동차공학과) ;
  • 이명호 (서울과학기술대학교 기계자동차공학과)
  • Received : 2013.10.02
  • Accepted : 2013.12.02
  • Published : 2014.02.10

Abstract

In this study, a fan coil unit with an oval-type heat exchanger has been developed. The performance of the present fan coil unit has been investigated, by comparison with the previous fan coil unit with a circular-type heat exchanger. For the fan coil unit with circular- and oval-type heat exchangers, the heat flux and pressure loss through the heat exchangers were measured at standard operating conditions. In addition, the wind speeds exhausted from the fan coil units were compared, for the same fan motor operation. The experimental results show that the average wind speed of the oval-type heat exchanger is 20 percent higher than that of the circular-type heat exchanger. The heat flux in the oval-type heat exchanger is enhanced by 40% or more, over the circular-type heat exchanger.

Keywords

References

  1. Brauer, H., 1964, Compact heat exchanger, Chem. Progress Eng., Vol. 45, pp. 451-460.
  2. Shin, S. W., Chung, I. K., and Kim, S. Y., 2009, Local heat transfer characteristics on fin surface of plate fin-oval tube with delta wing vortex generators, Transaction of KSME, Vol. 33, No. 10, pp. 757-766.
  3. Kim, S. T., Choi, Y. H., and Kim, H. T., 2001, Numercial study for air-side flow characteristics of fin-tube heat exchangers with oval-tube, Energy Eng. J., Vol. 10, No. 2, pp. 166-175.
  4. Lee, S. J., Lee, Y. S., Kweon, Y. C., Park, J. U., and Jang, I. K., 2001, An experimental study on circuit path of FCU heat exchangers, Proc. of the KSME 2001 Autumm Anuual Meeting, pp. 207-212.
  5. Choi, Y. G., Kim, J. S., Yoon, S. H., Kim, M. H., and Oh, C., 2006, Numerical study for fluid and heat transfer of fin-tube heat exchangers with oval-tube divided, Proc. of the KOSME Fall Conference, pp. 223-224.
  6. Yoo, J. H. and Yoon, J. K., 2013, Numerical analysis for heat transfer characteristics of elliptic fin-tube heat exchanger with various shapes, Trans. Korean Soc. Mech. Eng., Vol. 37, No. 4, pp. 367-375. https://doi.org/10.3795/KSME-B.2013.37.4.367
  7. Talaat, A. I. and Abdalla, G., 2009, Thermal performance criteria of elliptic tube bundle in crossflow, International Journal of Thermal Sciences, Vol. 48, pp. 2148-2158. https://doi.org/10.1016/j.ijthermalsci.2009.03.011
  8. Kim, M. H., Shin, J. S., and Bullard, C. W., 2000, Heat transfer and pressure drop characteristics during of R22 evaporation in an oval micro-fin tube, International Refrigeration and Air Conditioning.
  9. Kang, H. C. and Lee, J. H., 2006, Convective heat transfer characteristics of oval fin-circular tube heat exchanger, KSCFE, Vol. 15, No. 2, pp. 1-6.
  10. Ko, K. W., 2008, Experimental study on heat transfer and pressure drop of heat exchangers for cooling fan coil unit, KAIS J., Vol. 9, No. 3, pp. 599-604.
  11. Min, J. C. and Webb, R. L., 2004, Numerical analyses of effects of tube shape on performance of a finned tube heat exchanger, J. Enhanced Heat Trans., Vol. 11, No. 1, pp. 61-73. https://doi.org/10.1615/JEnhHeatTransf.v11.i1.50
  12. Leu, J. S., Liu, M. S., Liaw, J. S., and Wang, C. C., 2001, A numerical investigation of louvered fin-and tube heat exchangers having circular and oval tube configurations, Int. J. Heat Mass Trans., Vol. 44, pp. 4235-4243. https://doi.org/10.1016/S0017-9310(01)00081-3

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  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 2014 vol.27, pp.7, 2015, https://doi.org/10.6110/KJACR.2015.27.7.380