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Performance comparison for oil-water heat transfer of circumferential overlap trisection helical baffle heat exchanger

  • Geological, Civil, Energy and Traffic Engineering
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Abstract

The performance tests were conducted on oil–water heat transfer in circumferential overlap trisection helical baffle heat exchangers with incline angles of 12°, 16°, 20°, 24° and 28°, and compared with a segmental baffle heat exchanger. The results sh ow that the shell side heat transfer coefficient h o and pressure drop Δpo both increase while the comprehensive index h o/Δpo decreases with the increase of the mass flow rate of all schemes. And the shell side heat transfer coefficient, pressure drop and the comprehensive index h o/Δpo decrease with the increase of the baffle incline angle at a certain mass flow rate. The average values of shell side heat transfer coefficient and the comprehensive index h o/Δpo of the 12° helical baffled scheme are above 50% higher than th ose of the segmental one correspondingly, while the pressure drop value is very close and the ratios of the average values are about 1.664 and 1.596, respectively. The shell-side Nusselt number Nu o and the comprehensive index Nu o·Eu zo -1 increase with the increase of Reynolds number of the shell side axial in all schemes, and the results also demonstrate that the small incline angled helical scheme has better comprehensive performance.

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Authors and Affiliations

  1. College of Urban Construction and Safety Engineering, Shanghai Institute of Technology, Shanghai, 201418, China

    Wei-han Wang  (王伟晗) & Dao-lai Cheng  (程道来)

  2. Energy and Environment Research Institute, Baoshan Iron & Steel Co., Ltd, Shanghai, 201900, China

    Tao Liu  (刘涛) & Ying-hao Liu  (刘颖昊)

Authors
  1. Wei-han Wang  (王伟晗)
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  2. Dao-lai Cheng  (程道来)
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  3. Tao Liu  (刘涛)
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  4. Ying-hao Liu  (刘颖昊)
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Corresponding author

Correspondence to Dao-lai Cheng  (程道来).

Additional information

Foundation item: Project(50976035) supported by the National Natural Science Foundation of China; Project(4521ZK120064004) supported by the Science and Technology Commission Green Energy and Power Engineering of Special Fund Project of Shanghai, China

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Wang, Wh., Cheng, Dl., Liu, T. et al. Performance comparison for oil-water heat transfer of circumferential overlap trisection helical baffle heat exchanger. J. Cent. South Univ. 23, 2720–2727 (2016). https://doi.org/10.1007/s11771-016-3333-4

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  • DOI: https://doi.org/10.1007/s11771-016-3333-4

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