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Experimental study of thermal performance of offset rectangular plate fin absorber-plates

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  • Hachemi, A.

Abstract

A new technique was developed to enhance the heat transfer more than with fully developed turbulent flow. Commonly the offset rectangular plate fins are used in heat exchangers; they alternate with the periodically interruptions. The fluid homogenization depends on the length of interruption, and new velocity and thermal boundary layers were developed at each encountered offset fin located downstream of interruption. This technique characterizes a higher heat transfer than in fully developed turbulent flow. In the present work this technique of periodically interrupted offset fins is adapted to solar collector. An experimental investigation carried out showed the generated enhancement of thermal performance. The offset rectangular plate fins, mounted in staggered pattern, are oriented parallel to the fluid flow and are soldered to the underside of absorber plate. High thermal performances are obtained with low flow friction and in consequence a low electrical power consumption by the fan in comparison to the flat plate collector.

Suggested Citation

  • Hachemi, A., 1999. "Experimental study of thermal performance of offset rectangular plate fin absorber-plates," Renewable Energy, Elsevier, vol. 17(3), pages 371-384.
    • Handle: RePEc:eee:renene:v:17:y:1999:i:3:p:371-384
    DOI: 10.1016/S0960-1481(98)00115-3
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    References listed on IDEAS

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    1. Choudhury, C. & Garg, H.P., 1991. "Design analysis of corrugated and flat plate solar air heaters," Renewable Energy, Elsevier, vol. 1(5), pages 595-607.
    2. Yeh, Ho-Ming & Ting, Young-Chun, 1988. "Efficiency of solar air heaters packed with iron filings," Energy, Elsevier, vol. 13(7), pages 543-547.
    3. Mishra, C.B. & Sharma, S.P., 1981. "Performance study of air-heated packed-bed solar-energy collectors," Energy, Elsevier, vol. 6(2), pages 153-157.
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    2. Gbaha, P. & Yobouet Andoh, H. & Kouassi Saraka, J. & Kaménan Koua, B. & Touré, S., 2007. "Experimental investigation of a solar dryer with natural convective heat flow," Renewable Energy, Elsevier, vol. 32(11), pages 1817-1829.
    3. Khoshvaght-Aliabadi, M. & Tatari, M. & Salami, M., 2018. "Analysis on Al2O3/water nanofluid flow in a channel by inserting corrugated/perforated fins for solar heating heat exchangers," Renewable Energy, Elsevier, vol. 115(C), pages 1099-1108.
    4. Velmurugan, V. & Naveen Kumar, K.J. & Noorul Haq, T. & Srithar, K., 2009. "Performance analysis in stepped solar still for effluent desalination," Energy, Elsevier, vol. 34(9), pages 1179-1186.
    5. Youcef-Ali, S., 2005. "Study and optimization of the thermal performances of the offset rectangular plate fin absorber plates, with various glazing," Renewable Energy, Elsevier, vol. 30(2), pages 271-280.
    6. Shams, S.M.N. & Mc Keever, M. & Mc Cormack, S. & Norton, B., 2016. "Design and experiment of a new solar air heating collector," Energy, Elsevier, vol. 100(C), pages 374-383.

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