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Performance characteristics of a new curved double-pass counter flow solar air heater

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  • Kumar, Amit
  • Singh, Ajeet Pratap
  • Akshayveer,
  • Singh, O.P.

Abstract

In this paper, a novel design of counter flow curved double-pass solar air heater (DPSAH) is proposed, and its performance characteristics are numerically investigated and compared with various parallel designs under different flow and geometric conditions. The developed model is first experimentally validated. The hydraulic and thermal performance of various DPSAH designs (smooth curved single pass, smooth parallel curved double-pass, smooth counter curved double-pass, roughened parallel curved double-pass, and roughened counter curved double-pass) show that counter flow curved DPSAH with asymmetrically placed turbulators is thermally better compared to other designs. A maximum of 23% augmentation in thermal performance was observed. To predict the performance of the best design, new correlations for Nusselt number (Nu) and friction factor (f) are developed in terms of Reynolds number (Re) and relative roughness height (d/H). The data estimated from these correlations are in good agreement with the values of f and Nu predicted from the model.

Suggested Citation

  • Kumar, Amit & Singh, Ajeet Pratap & Akshayveer, & Singh, O.P., 2022. "Performance characteristics of a new curved double-pass counter flow solar air heater," Energy, Elsevier, vol. 239(PA).
    • Handle: RePEc:eee:energy:v:239:y:2022:i:pa:s0360544221021344
    DOI: 10.1016/j.energy.2021.121886
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    References listed on IDEAS

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    1. Dhiman, Prashant & Thakur, N.S. & Chauhan, S.R., 2012. "Thermal and thermohydraulic performance of counter and parallel flow packed bed solar air heaters," Renewable Energy, Elsevier, vol. 46(C), pages 259-268.
    2. Singh, Ajeet Pratap & Singh, O.P., 2020. "Curved vs. flat solar air heater: Performance evaluation under diverse environmental conditions," Renewable Energy, Elsevier, vol. 145(C), pages 2056-2073.
    3. Hassan, Hamdy & Abo-Elfadl, Saleh, 2018. "Experimental study on the performance of double pass and two inlet ports solar air heater (SAH) at different configurations of the absorber plate," Renewable Energy, Elsevier, vol. 116(PA), pages 728-740.
    4. Singh, Satyender & Chaurasiya, Shailendra Kumar & Negi, Bharat Singh & Chander, Subhash & Nemś, Magdalena & Negi, Sushant, 2020. "Utilizing circular jet impingement to enhance thermal performance of solar air heater," Renewable Energy, Elsevier, vol. 154(C), pages 1327-1345.
    5. Jouybari, Nima Fallah & Lundström, T. Staffan, 2020. "Performance improvement of a solar air heater by covering the absorber plate with a thin porous material," Energy, Elsevier, vol. 190(C).
    6. Hernández, Alejandro L. & Quiñonez, José E., 2013. "Analytical models of thermal performance of solar air heaters of double-parallel flow and double-pass counter flow," Renewable Energy, Elsevier, vol. 55(C), pages 380-391.
    7. Karim, M.A. & Perez, E. & Amin, Z.M., 2014. "Mathematical modelling of counter flow v-grove solar air collector," Renewable Energy, Elsevier, vol. 67(C), pages 192-201.
    8. Kumar, Amit & Akshayveer, & Singh, Ajeet Pratap & Singh, O.P., 2020. "Efficient designs of double-pass curved solar air heaters," Renewable Energy, Elsevier, vol. 160(C), pages 1105-1118.
    9. Thakur, Deep Singh & Khan, Mohd. Kaleem & Pathak, Manabendra, 2017. "Solar air heater with hyperbolic ribs: 3D simulation with experimental validation," Renewable Energy, Elsevier, vol. 113(C), pages 357-368.
    10. Dhiman, Prashant & Thakur, N.S. & Kumar, Anoop & Singh, Satyender, 2011. "An analytical model to predict the thermal performance of a novel parallel flow packed bed solar air heater," Applied Energy, Elsevier, vol. 88(6), pages 2157-2167, June.
    11. Zhu, Tingting & Zhang, Ji, 2021. "A numerical study on performance optimization of a micro-heat pipe arrays-based solar air heater," Energy, Elsevier, vol. 215(PA).
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    Cited by:

    1. Madhwesh Nagaraj & Manu Krishna Reddy & Arun Kumar Honnesara Sheshadri & Kota Vasudeva Karanth, 2022. "Numerical Analysis of an Aerofoil Fin Integrated Double Pass Solar Air Heater for Thermal Performance Enhancement," Sustainability, MDPI, vol. 15(1), pages 1-22, December.
    2. 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.
    3. Hassan, Hamdy & Osman, Osman Omran & Abdelmoez, Mahmoud N. & abo-Elfadl, Saleh, 2023. "Energy and exergy evaluation of new design nabla shaped tubular solar air heater (∇ TSAH): Experimental investigation," Energy, Elsevier, vol. 276(C).

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