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Thermal Hydraulic Performance in a Solar Air Heater Channel with Multi V-Type Perforated Baffles

Author

Listed:
  • Anil Kumar

    (School of Mechanical Engineering, Kyungpook National University, Daegu 41566, Korea)

  • Man-Hoe Kim

    (School of Mechanical Engineering, Kyungpook National University, Daegu 41566, Korea)

Abstract

This article presents heat transfer and fluid flow characteristics in a solar air heater (SAH) channel with multi V-type perforated baffles. The flow passage has an aspect ratio of 10. The relative baffle height, relative pitch, relative baffle hole position, flow attack angle, and baffle open area ratio are 0.6, 8.0, 0.42, 60°, and 12%, respectively. The Reynolds numbers considered in the study was in the range of 3000–10,000. The re-normalization group (RNG) k -ε turbulence model has been used for numerical analysis, and the optimum relative baffle width has been investigated considering relative baffle widths of 1.0–7.0.The numerical results are in good agreement with the experimental data for the range considered in the study. Multi V-type perforated baffles are shown to have better thermal performance as compared to other baffle shapes in a rectangular passage. The overall thermal hydraulic performance shows the maximum value at the relative baffle width of 5.0.

Suggested Citation

  • Anil Kumar & Man-Hoe Kim, 2016. "Thermal Hydraulic Performance in a Solar Air Heater Channel with Multi V-Type Perforated Baffles," Energies, MDPI, vol. 9(7), pages 1-18, July.
    • Handle: RePEc:gam:jeners:v:9:y:2016:i:7:p:564-:d:74340
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    References listed on IDEAS

    as
    1. Kumar, Anil & Kim, Man-Hoe, 2014. "Numerical optimization of solar air heaters having different types of roughness shapes on the heated plate – Technical note," Energy, Elsevier, vol. 72(C), pages 731-738.
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    Cited by:

    1. Salman, Mohammad & Park, Myeong Hyeon & Chauhan, Ranchan & Kim, Sung Chul, 2021. "Experimental analysis of single loop solar heat collector with jet impingement over indented dimples," Renewable Energy, Elsevier, vol. 169(C), pages 618-628.
    2. Kumar, Anil & Kumar, Raj & Maithani, Rajesh & Chauhan, Ranchan & Sethi, Muneesh & Kumari, Anita & Kumar, Sushil & Kumar, Sunil, 2017. "Correlation development for Nusselt number and friction factor of a multiple type V-pattern dimpled obstacles solar air passage," Renewable Energy, Elsevier, vol. 109(C), pages 461-479.
    3. Arnut Phila & Chinaruk Thianpong & Smith Eiamsa-ard, 2019. "Influence of Geometric Parameters of Alternate Axis Twisted Baffles on the Local Heat Transfer Distribution and Pressure Drop in a Rectangular Channel Using a Transient Liquid Crystal Technique," Energies, MDPI, vol. 12(12), pages 1-25, June.

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