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Ventilated-solar roof air flow and heat transfer investigation

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  • Sandberg, Mats
  • Moshfegh, Bahram

Abstract

The governing parameters for flows generated by heat transfer from solar cell modules to air gaps are discussed. Experimental results are presented from measurements in mock-ups of ventilated facades and roofs. The heat transmitted from the solar cells to the air have been mimicked by the use of heating foils. The inclination angle of the roof, position of solar cell module and the height to width ratio (aspect ratio) have been varied. The bulk properties as the air flow rate in the air gap, local temperatures and velocities have been measured. Results of importance for design of hybrid systems and cooling of solar cells have been obtained.

Suggested Citation

  • Sandberg, Mats & Moshfegh, Bahram, 1998. "Ventilated-solar roof air flow and heat transfer investigation," Renewable Energy, Elsevier, vol. 15(1), pages 287-292.
    • Handle: RePEc:eee:renene:v:15:y:1998:i:1:p:287-292
    DOI: 10.1016/S0960-1481(98)00175-X
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    References listed on IDEAS

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    1. Sandberg, M. & Moshfegh, B., 1996. "Investigation of fluid flow and heat transfer in a vertical channel heated from one side by PV elements, part II - Experimental study," Renewable Energy, Elsevier, vol. 8(1), pages 254-258.
    2. Moshfegh, B. & Sandberg, M., 1996. "Investigation of fluid flow and heat transfer in a vertical channel heated from one side by PV elements, part I - Numerical Study," Renewable Energy, Elsevier, vol. 8(1), pages 248-253.
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    Cited by:

    1. Tonui, J.K. & Tripanagnostopoulos, Y., 2007. "Improved PV/T solar collectors with heat extraction by forced or natural air circulation," Renewable Energy, Elsevier, vol. 32(4), pages 623-637.
    2. Zondag, H.A., 2008. "Flat-plate PV-Thermal collectors and systems: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 12(4), pages 891-959, May.
    3. Bottarelli, Michele & Bortoloni, Marco & Zannoni, Giovanni & Allen, Richard & Cherry, Nigel, 2017. "CFD analysis of roof tile coverings," Energy, Elsevier, vol. 137(C), pages 391-398.
    4. Shi, Long & Zhang, Guomin & Yang, Wei & Huang, Dongmei & Cheng, Xudong & Setunge, Sujeeva, 2018. "Determining the influencing factors on the performance of solar chimney in buildings," Renewable and Sustainable Energy Reviews, Elsevier, vol. 88(C), pages 223-238.
    5. Zapałowicz, Zbigniew & Zeńczak, Wojciech, 2021. "The possibilities to improve ship's energy efficiency through the application of PV installation including cooled modules," Renewable and Sustainable Energy Reviews, Elsevier, vol. 143(C).
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    8. Lee, Haksung & Ozaki, Akihito, 2018. "Sensitivity analysis for optimization of renewable-energy-based air-circulation-type temperature-control system," Applied Energy, Elsevier, vol. 230(C), pages 317-329.
    9. Ren, Xiu-Hong & Wang, Lei & Liu, Run-Zhe & Wang, Lin & Zhao, Fu-Yun, 2021. "Thermal stack airflows inside the solar chimney with discrete heat sources: Reversal flow regime defined by chimney inclination and thermal Rayleigh number," Renewable Energy, Elsevier, vol. 163(C), pages 342-356.
    10. Sanda Budea, 2014. "Solar Air Collectors for Space Heating and Ventilation Applications—Performance and Case Studies under Romanian Climatic Conditions," Energies, MDPI, vol. 7(6), pages 1-12, June.

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