IDEAS home Printed from
   My bibliography  Save this article

Exergy based analysis of solar air heater having discrete V-down rib roughness on absorber plate


  • Singh, Sukhmeet
  • Chander, Subhash
  • Saini, J.S.


The artificially rib roughened solar air heaters perform thermally better than the conventional flat-plate solar air heater under same operating conditions. However, the artificial rib roughness leads to higher friction factor thereby increasing pumping power. The second law based exergy analysis is suitable for design of rib roughened solar air heaters as it incorporates quality of useful energy output and pumping power. The exergetic efficiency of a solar air heater having discrete V-down rib roughness is studied analytically and the results obtained are compared with that of a conventional flat-plate solar air heater. Flow Reynolds number and rib-roughness parameters, viz., relative roughness pitch, relative gap position, relative gap width, angle of attack and relative roughness height have combined effect on heat transfer as well as fluid friction. The exergy based criterion suggests use of the discrete V-down rib roughened solar air heater for the Reynolds number range normally used in solar air heaters. It was found that there exist optimum roughness parameters of the discrete V-down rib for a given Reynolds number (or temperature rise parameter) at which the exergetic efficiency is highest. Curves of optimum rib-roughness parameters are also plotted.

Suggested Citation

  • Singh, Sukhmeet & Chander, Subhash & Saini, J.S., 2012. "Exergy based analysis of solar air heater having discrete V-down rib roughness on absorber plate," Energy, Elsevier, vol. 37(1), pages 749-758.
  • Handle: RePEc:eee:energy:v:37:y:2012:i:1:p:749-758
    DOI: 10.1016/

    Download full text from publisher

    File URL:
    Download Restriction: Full text for ScienceDirect subscribers only

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    1. Kurtbas, İrfan & Durmus̨, Aydın, 2004. "Efficiency and exergy analysis of a new solar air heater," Renewable Energy, Elsevier, vol. 29(9), pages 1489-1501.
    2. Torres R, E & Picon Nuñez, M & Cervantes de G, J, 1998. "Exergy analysis and optimization of a solar-assisted heat pump," Energy, Elsevier, vol. 23(4), pages 337-344.
    3. Akbulut, Abdullah & Durmuş, Aydin, 2010. "Energy and exergy analyses of thin layer drying of mulberry in a forced solar dryer," Energy, Elsevier, vol. 35(4), pages 1754-1763.
    4. 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.
    5. Prasad, K. & Mullick, S. C., 1983. "Heat transfer characteristics of a solar air heater used for drying purposes," Applied Energy, Elsevier, vol. 13(2), pages 83-93, February.
    6. Sami, Samaneh & Etesami, Nasrin & Rahimi, Amir, 2011. "Energy and exergy analysis of an indirect solar cabinet dryer based on mathematical modeling results," Energy, Elsevier, vol. 36(5), pages 2847-2855.
    7. Hans, Vishavjeet Singh & Saini, R.P. & Saini, J.S., 2009. "Performance of artificially roughened solar air heaters--A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 13(8), pages 1854-1869, October.
    8. Ozgen, Filiz & Esen, Mehmet & Esen, Hikmet, 2009. "Experimental investigation of thermal performance of a double-flow solar air heater having aluminium cans," Renewable Energy, Elsevier, vol. 34(11), pages 2391-2398.
    9. Layek, Apurba & Saini, J.S. & Solanki, S.C., 2007. "Second law optimization of a solar air heater having chamfered rib–groove roughness on absorber plate," Renewable Energy, Elsevier, vol. 32(12), pages 1967-1980.
    10. Karwa, Rajendra & Chauhan, Kalpana, 2010. "Performance evaluation of solar air heaters having v-down discrete rib roughness on the absorber plate," Energy, Elsevier, vol. 35(1), pages 398-409.
    11. Kaygusuz, K. & Ayhan, T., 1993. "Exergy analysis of solar-assisted heat-pump systems for domestic heating," Energy, Elsevier, vol. 18(10), pages 1077-1085.
    12. Singh, Sukhmeet & Chander, Subhash & Saini, J.S., 2011. "Heat transfer and friction factor correlations of solar air heater ducts artificially roughened with discrete V-down ribs," Energy, Elsevier, vol. 36(8), pages 5053-5064.
    13. Gupta, M.K. & Kaushik, S.C., 2008. "Exergetic performance evaluation and parametric studies of solar air heater," Energy, Elsevier, vol. 33(11), pages 1691-1702.
    14. 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.
    15. Lior, Noam & Zhang, Na, 2007. "Energy, exergy, and Second Law performance criteria," Energy, Elsevier, vol. 32(4), pages 281-296.
    16. Midilli, A. & Kucuk, H., 2003. "Energy and exergy analyses of solar drying process of pistachio," Energy, Elsevier, vol. 28(6), pages 539-556.
    Full references (including those not matched with items on IDEAS)


    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.

    Cited by:

    1. Varun Kumar B. & G. Manikandan & P. Rajesh Kanna & Dawid Taler & Jan Taler & Marzena Nowak-Ocłoń & Karol Mzyk & Hoong Thiam Toh, 2018. "A Performance Evaluation of a Solar Air Heater Using Different Shaped Ribs Mounted on the Absorber Plate—A Review," Energies, MDPI, Open Access Journal, vol. 11(11), pages 1-20, November.
    2. Fudholi, Ahmad & Sopian, Kamaruzzaman, 2019. "A review of solar air flat plate collector for drying application," Renewable and Sustainable Energy Reviews, Elsevier, vol. 102(C), pages 333-345.
    3. Nidhul, Kottayat & Kumar, Sachin & Yadav, Ajay Kumar & Anish, S., 2020. "Enhanced thermo-hydraulic performance in a V-ribbed triangular duct solar air heater: CFD and exergy analysis," Energy, Elsevier, vol. 200(C).
    4. Nazri, Nurul Syakirah & Fudholi, Ahmad & Mustafa, Wan & Yen, Chan Hoy & Mohammad, Masita & Ruslan, Mohd Hafidz & Sopian, Kamaruzzaman, 2019. "Exergy and improvement potential of hybrid photovoltaic thermal/thermoelectric (PVT/TE) air collector," Renewable and Sustainable Energy Reviews, Elsevier, vol. 111(C), pages 132-144.
    5. Singh Yadav, Anil & Kumar Thapak, Manish, 2014. "Artificially roughened solar air heater: Experimental investigations," Renewable and Sustainable Energy Reviews, Elsevier, vol. 36(C), pages 370-411.
    6. Sabzpooshani, M. & Mohammadi, K. & Khorasanizadeh, H., 2014. "Exergetic performance evaluation of a single pass baffled solar air heater," Energy, Elsevier, vol. 64(C), pages 697-706.
    7. Bahrehmand, D. & Ameri, M. & Gholampour, M., 2015. "Energy and exergy analysis of different solar air collector systems with forced convection," Renewable Energy, Elsevier, vol. 83(C), pages 1119-1130.
    8. Hedayatizadeh, Mahdi & Sarhaddi, Faramarz & Safavinejad, Ali & Ranjbar, Faramarz & Chaji, Hossein, 2016. "Exergy loss-based efficiency optimization of a double-pass/glazed v-corrugated plate solar air heater," Energy, Elsevier, vol. 94(C), pages 799-810.
    9. Fudholi, Ahmad & Zohri, Muhammad & Rukman, Nurul Shahirah Binti & Nazri, Nurul Syakirah & Mustapha, Muslizainun & Yen, Chan Hoy & Mohammad, Masita & Sopian, Kamaruzzaman, 2019. "Exergy and sustainability index of photovoltaic thermal (PVT) air collector: A theoretical and experimental study," Renewable and Sustainable Energy Reviews, Elsevier, vol. 100(C), pages 44-51.
    10. Singh, Satyender & Dhiman, Prashant, 2016. "Thermal performance of double pass packed bed solar air heaters – A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 53(C), pages 1010-1031.
    11. Rajaseenivasan, T. & Srinivasan, S. & Srithar, K., 2015. "Comprehensive study on solar air heater with circular and V-type turbulators attached on absorber plate," Energy, Elsevier, vol. 88(C), pages 863-873.


    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:energy:v:37:y:2012:i:1:p:749-758. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Haili He). General contact details of provider: .

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service hosted by the Research Division of the Federal Reserve Bank of St. Louis . RePEc uses bibliographic data supplied by the respective publishers.