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Experimental study of thermal and hydraulic performance of multi - pass jet impingement solar air heater

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  • Mahato, M.K.
  • Singh, S.N.

Abstract

This present work deals with the experimental study of the effect of the jet diameter ratio, Dj/Dh and Reynolds number, ReDh on thermo-hydraulic performance of a double-pass inline-hole jet plate solar air heater (JPSAH) under cross-flow condition. In the present study, the ranges of geometrical and operating parameters such as, jet diameter ratio, Dj/Dh = 0.058, 0.077, 0.096, mass flow rate, m˙ = 0.10–0.14 kg/s, Reynolds number, ReDh = 9883–18469, and daily mean solar flux, IT = 702–1318 W/m2 are taken to get the experimental results in terms of Temperature rise parameter (TRP), collector efficiency, Nusselt number, Stanton number and efficiency index for the double-pass JPSAH. This work also compares the present results with simple double-pass solar air heater. It is found that the maximum percentage increments in Nusselt number, Stanton number and efficiency index are 101.5 %, 14.3 % and 113 % respectively at Re = 12011for Dj/Dh = 0.058 compared to simple double-pass solar air heater (SDPSAH). Based on the experimental data, correlations for the Stanton number, friction factor, and efficiency index have been developed.

Suggested Citation

  • Mahato, M.K. & Singh, S.N., 2025. "Experimental study of thermal and hydraulic performance of multi - pass jet impingement solar air heater," Renewable Energy, Elsevier, vol. 249(C).
    • Handle: RePEc:eee:renene:v:249:y:2025:i:c:s0960148125007682
    DOI: 10.1016/j.renene.2025.123106
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    References listed on IDEAS

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    1. Dong, Zhimin & Du, Qinglin & Liu, Peng & Liu, Zhichun & Liu, Wei, 2023. "A numerical investigation and irreversibility optimization of constantly grooved solar air heaters," Renewable Energy, Elsevier, vol. 207(C), pages 629-646.
    2. Dong, Zhimin & Liu, Peng & Xiao, Hui & Liu, Zhichun & Liu, Wei, 2021. "A study on heat transfer enhancement for solar air heaters with ripple surface," Renewable Energy, Elsevier, vol. 172(C), pages 477-487.
    3. Mahato, M.K. & Singh, S.N., 2024. "Effect of the partial blockage in the exit of the mixing channel on thermo - Hydraulic performance of the multi – Pass jet plate solar air heater," Renewable Energy, Elsevier, vol. 222(C).
    4. Hedau, Ankush & Saini, R.P., 2023. "Thermo-hydraulic performance of double pass solar air heater duct having semi-circular tubes and perforated blocks as artificial roughness," Renewable Energy, Elsevier, vol. 205(C), pages 543-562.
    5. Elwekeel, Fifi N.M. & E. F. Nasr, Abdel-Atty & I. Radwan, Momen & I.A. Aly, Wael, 2024. "Influence of impingement jet designs on solar air collector performance," Renewable Energy, Elsevier, vol. 221(C).
    6. Maithani, Rajesh & Sharma, Sachin & Kumar, Anil, 2021. "Thermo-hydraulic and exergy analysis of inclined impinging jets on absorber plate of solar air heater," Renewable Energy, Elsevier, vol. 179(C), pages 84-95.
    7. Kumar, Amit & Akshayveer, & Singh, Ajeet Pratap & Singh, O.P., 2022. "Investigations for efficient design of a new counter flow double-pass curved solar air heater," Renewable Energy, Elsevier, vol. 185(C), pages 759-770.
    8. Singh, Satyender, 2020. "Experimental and numerical investigations of a single and double pass porous serpentine wavy wiremesh packed bed solar air heater," Renewable Energy, Elsevier, vol. 145(C), pages 1361-1387.
    9. Hegde, Avinash K. & Pai, Raghuvir & Karanth, K. Vasudeva, 2025. "Energy and exergetic analysis of a solar air heater for enhanced thermohydraulic performance with side wall treatment," Energy, Elsevier, vol. 315(C).
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