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Thermohydraulic performance analysis of an arc shape wire roughened solar air heater

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  • Sahu, Mukesh Kumar
  • Prasad, Radha Krishna

Abstract

In the present paper, a comprehensive investigation on thermal and thermohydraulic performance of solar collector for heating air having circular wire rib roughness in the form of arc shape on the back side of absorber plate, has been carried out. A mathematical model incorporating the operating and system parameters has been developed and the results have been computed by using MATLAB for specified range of these parameters. A conventional solar air heater working under similar conditions has also been considered for the purpose of comparison. At rib height-to-duct hydraulic diameter ratio = 0.0422 and flow-attack-angle = 0.3333 the values of maximum thermal and effective efficiencies were found to be 79.84% and 75.24% respectively for the range of parameters used in the investigation. Further, the thermal efficiency, obtained in the present work has been compared with those obtained for other roughness geometries available in the literature for common roughness parameters and operating parameters to validate the results. Optimization of different parameters of wire roughness for optimum thermohydraulic (effective) efficiency of solar air heater duct has also been investigated.

Suggested Citation

  • Sahu, Mukesh Kumar & Prasad, Radha Krishna, 2017. "Thermohydraulic performance analysis of an arc shape wire roughened solar air heater," Renewable Energy, Elsevier, vol. 108(C), pages 598-614.
    • Handle: RePEc:eee:renene:v:108:y:2017:i:c:p:598-614
    DOI: 10.1016/j.renene.2017.02.075
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    References listed on IDEAS

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    1. Sahu, Mukesh Kumar & Prasad, Radha Krishna, 2016. "Exergy based performance evaluation of solar air heater with arc-shaped wire roughened absorber plate," Renewable Energy, Elsevier, vol. 96(PA), pages 233-243.
    2. Gupta, M.K. & Kaushik, S.C., 2009. "Performance evaluation of solar air heater for various artificial roughness geometries based on energy, effective and exergy efficiencies," Renewable Energy, Elsevier, vol. 34(3), pages 465-476.
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    4. Singh, Sukhmeet & Chander, Subhash & Saini, J.S., 2015. "Thermo-hydraulic performance due to relative roughness pitch in V-down rib with gap in solar air heater duct—Comparison with similar rib roughness geometries," Renewable and Sustainable Energy Reviews, Elsevier, vol. 43(C), pages 1159-1166.
    5. Varun, & Saini, R.P. & Singal, S.K., 2008. "Investigation of thermal performance of solar air heater having roughness elements as a combination of inclined and transverse ribs on the absorber plate," Renewable Energy, Elsevier, vol. 33(6), pages 1398-1405.
    6. Aharwal, K.R. & Gandhi, B.K. & Saini, J.S., 2008. "Experimental investigation on heat-transfer enhancement due to a gap in an inclined continuous rib arrangement in a rectangular duct of solar air heater," Renewable Energy, Elsevier, vol. 33(4), pages 585-596.
    7. Lanjewar, Atul & Bhagoria, J.L. & Sarviya, R.M., 2011. "Heat transfer and friction in solar air heater duct with W-shaped rib roughness on absorber plate," Energy, Elsevier, vol. 36(7), pages 4531-4541.
    8. Karwa, Rajendra & Solanki, S.C & Saini, J.S, 2001. "Thermo-hydraulic performance of solar air heaters having integral chamfered rib roughness on absorber plates," Energy, Elsevier, vol. 26(2), pages 161-176.
    9. Singh, Sukhmeet & Chander, Subhash & Saini, J.S., 2012. "Investigations on thermo-hydraulic performance due to flow-attack-angle in V-down rib with gap in a rectangular duct of solar air heater," Applied Energy, Elsevier, vol. 97(C), pages 907-912.
    10. Verma, S.K & Prasad, B.N, 2000. "Investigation for the optimal thermohydraulic performance of artificially roughened solar air heaters," Renewable Energy, Elsevier, vol. 20(1), pages 19-36.
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    13. Kumar, Anil & Saini, R.P. & Saini, J.S., 2012. "Heat and fluid flow characteristics of roughened solar air heater ducts – A review," Renewable Energy, Elsevier, vol. 47(C), pages 77-94.
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    Cited by:

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    2. Harish Kumar Ghritlahre & Purvi Chandrakar & Ashfaque Ahmad, 2021. "A Comprehensive Review on Performance Prediction of Solar Air Heaters Using Artificial Neural Network," Annals of Data Science, Springer, vol. 8(3), pages 405-449, September.
    3. Tandel, Hiren U. & Modi, Kalpesh V., 2022. "Experimental assessment of double-pass solar air heater by incorporating perforated baffles and solar water heating system," Renewable Energy, Elsevier, vol. 183(C), pages 385-405.
    4. Singh Bisht, Vijay & Kumar Patil, Anil & Gupta, Anirudh, 2018. "Review and performance evaluation of roughened solar air heaters," Renewable and Sustainable Energy Reviews, Elsevier, vol. 81(P1), pages 954-977.
    5. Mgbemene, Chigbo & Jacobs, Ifeanyi & Okoani, Anthony & Ononiwu, Ndudim, 2022. "Experimental investigation on the performance of aluminium soda can solar air heater," Renewable Energy, Elsevier, vol. 195(C), pages 182-193.

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