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Theoretical analysis of laminar-film condensation heat transfer inside inclined wickless heat pipes flat-plate solar collector

Author

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  • Hussein, H.M.S.
  • Mohamad, M.A.
  • El-Asfouri, A.S.

Abstract

The present work presents a steady state two-dimensional theoretical analysis of laminar film condensation heat-transfer inside the condenser section of inclined wickless heat pipes flat-plate solar collector. A theoretical relation for the laminar film condensation heat-transfer coefficient is deduced and compared with the previous work. The comparison indicates good agreement between the present relation and most of the experimental results previously published. The present relation is preferred to the previously published empirical and theoretical relations. This is because it is valid for wide ranges of the wickless heat pipes inclination angles and the condenser section dimensions ratio.

Suggested Citation

  • Hussein, H.M.S. & Mohamad, M.A. & El-Asfouri, A.S., 2001. "Theoretical analysis of laminar-film condensation heat transfer inside inclined wickless heat pipes flat-plate solar collector," Renewable Energy, Elsevier, vol. 23(3), pages 525-535.
    • Handle: RePEc:eee:renene:v:23:y:2001:i:3:p:525-535
    DOI: 10.1016/S0960-1481(00)00149-X
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    Cited by:

    1. Zhang, Tao & Zheng, Wenjie & Wang, Liuya & Yan, Zhiwei & Hu, Mingke, 2021. "Experimental study and numerical validation on the effect of inclination angle to the thermal performance of solar heat pipe photovoltaic/thermal system," Energy, Elsevier, vol. 223(C).
    2. Rittidech, S. & Donmaung, A. & Kumsombut, K., 2009. "Experimental study of the performance of a circular tube solar collector with closed-loop oscillating heat-pipe with check valve (CLOHP/CV)," Renewable Energy, Elsevier, vol. 34(10), pages 2234-2238.
    3. Liu, Wenjie & Chow, Tin-Tai, 2020. "Experimental and numerical analysis of solar-absorbing metallic facade panel with embedded heat-pipe-array," Applied Energy, Elsevier, vol. 265(C).
    4. Jafari, Davoud & Franco, Alessandro & Filippeschi, Sauro & Di Marco, Paolo, 2016. "Two-phase closed thermosyphons: A review of studies and solar applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 53(C), pages 575-593.
    5. Dai, Y.J. & Hu, H.M. & Ge, T.S. & Wang, R.Z. & Kjellsen, Per, 2016. "Investigation on a mini-CPC hybrid solar thermoelectric generator unit," Renewable Energy, Elsevier, vol. 92(C), pages 83-94.
    6. Fahim Ullah & Mansoor K Khattak & Kang Min, 2018. "Experimental investigation of the comparison of compound parabolic concentrator and ordinary heat pipe-type solar concentrator," Energy & Environment, , vol. 29(5), pages 770-783, August.
    7. Jouhara, Hussam & Ezzuddin, Hatem, 2013. "Thermal performance characteristics of a wraparound loop heat pipe (WLHP) charged with R134A," Energy, Elsevier, vol. 61(C), pages 128-138.

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