Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Performance Characteristic of Large Diameter Oval Finned-Tube Heat Exchanger for Dryer

건조기용 타원관 대구경 핀-관 열교환기의 성능특성

  • 배경진 (한국생산기술연구원 열유체시스템연구실용화그룹) ;
  • 차동안 (한국생산기술연구원 열유체시스템연구실용화그룹) ;
  • 권오경 (한국생산기술연구원 열유체시스템 연구실용화그룹)
  • Received : 2014.05.28
  • Accepted : 2014.07.25
  • Published : 2014.10.31
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Abstract

The objectives of this paper are to obtain an empirical equations regarding the correlations between heat transfer and pressure drop of oval fin-tube heat exchanger having large diameter using wilson plot method. It was difficult to find any recommendable heat transfer and friction factor correlation available for our large diameter experimental cases. Overall heat transfer coefficients are composed of the heat transfer coefficients both inside and outside tubes. The resulting empirical correlations for the Nui and f-factor are given as $Nu_i=0.0146Re^{0.809}Pr^{0.3}$ and $f=4.366Re^{-0.64}$, respectively. The empirical correlations of the Nui and f-factors were developed for the large diameter oval finned-tube heat exchanger as a function of the Reynolds number. As the EG(Ethylene glycol) and air flow rate increases, the heat transfer rate and pressure drop is increased largely.

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References

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Cited by

  1. Performance Characteristics of Fin-Tube Heat Exchanger having Large Diameter Oval Tube for Dryer vol.27, pp.1, 2015, https://doi.org/10.6110/KJACR.2015.27.1.008
  2. Heat and fluid flow characteristics of an oval fin-and-tube heat exchanger with large diameters for textile machine dryer vol.52, pp.11, 2016, https://doi.org/10.1007/s00231-016-1754-0