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Shape optimization for absorber plates of solar air collectors

Author

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  • Kabeel, A.E.
  • Mečárik, K.

Abstract

Solar air heaters can be used for many applications at low and moderate temperatures. There are different factors affecting the solar air heater efficiency, e.g. collector length, collector depth, type of absorber plate, glass cover plate, wind speed, etc. The absorber shape factor is the most important parameter in the design for any type of solar air heater. Increasing the absorber shape area will increase the heat transfer to the flowing air, but on the other hand, will increase the pressure drop in the collector, this increases the required power consumption to pump the air flow crossing the collector. It was most important to find the optimizing angle of the triangular collector. The effect of the change of the absorber shape factor on the collector performance was studied. A theoretical model was constructed for the two types of collectors, taking into account the new parameter, called the absorber shape factor. The results can be used for all types of solar air heaters by changing the value of the absorber shape factor. The optimum angle of the triangular collector was deduced.

Suggested Citation

  • Kabeel, A.E. & Mečárik, K., 1998. "Shape optimization for absorber plates of solar air collectors," Renewable Energy, Elsevier, vol. 13(1), pages 121-131.
    • Handle: RePEc:eee:renene:v:13:y:1998:i:1:p:121-131
    DOI: 10.1016/S0960-1481(97)00034-7
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    Citations

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    Cited by:

    1. Karsli, Suleyman, 2007. "Performance analysis of new-design solar air collectors for drying applications," Renewable Energy, Elsevier, vol. 32(10), pages 1645-1660.
    2. Fan, Wenke & Kokogiannakis, Georgios & Ma, Zhenjun & Cooper, Paul, 2017. "Development of a dynamic model for a hybrid photovoltaic thermal collector – Solar air heater with fins," Renewable Energy, Elsevier, vol. 101(C), pages 816-834.
    3. Alam, Tabish & Kim, Man-Hoe, 2016. "Numerical study on thermal hydraulic performance improvement in solar air heater duct with semi ellipse shaped obstacles," Energy, Elsevier, vol. 112(C), pages 588-598.
    4. Tchinda, Réné, 2009. "A review of the mathematical models for predicting solar air heaters systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 13(8), pages 1734-1759, October.
    5. 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.
    6. Kabeel, A.E., 2007. "Solar powered air conditioning system using rotary honeycomb desiccant wheel," Renewable Energy, Elsevier, vol. 32(11), pages 1842-1857.
    7. El-Sebaii, A.A. & Aboul-Enein, S. & Ramadan, M.R.I. & Shalaby, S.M. & Moharram, B.M., 2011. "Investigation of thermal performance of-double pass-flat and v-corrugated plate solar air heaters," Energy, Elsevier, vol. 36(2), pages 1076-1086.
    8. Akpinar, Ebru Kavak & Koçyigit, Fatih, 2010. "Energy and exergy analysis of a new flat-plate solar air heater having different obstacles on absorber plates," Applied Energy, Elsevier, vol. 87(11), pages 3438-3450, November.

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