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CFD and experimental investigation of flat plate solar water heating system under steady state condition

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  • Gunjo, Dawit Gudeta
  • Mahanta, Pinakeswar
  • Robi, P.S.

Abstract

The absorber plate and outlet water temperature of a solar flat plate collector with straight riser and header arrangement is investigated. The effect of different operating parameters, viz., inlet water temperature, solar insolation, ambient temperature, and mass flow rate on the outlet water temperature and thermal efficiency were studied. Both the closed as well as open loop solar water heating system is considered for the present investigation. It is observed that the thermal efficiency of the solar water heating system increases with ambient temperature, solar insolation, and mass flow rate of water. However, thermal efficiency decreases as inlet water temperature increases. Numerical simulations were carried out using a 3-dimensional computational fluid dynamics (CFD) to predict the outlet water and absorber plate temperatures using the experimental values of solar insolation, ambient temperature and inlet water temperature within one hour interval. The CFD results were validated with the experimental results. It was found that the developed model could predict the outlet water and absorber plate temperature of the heating system with reasonable accuracy.

Suggested Citation

  • Gunjo, Dawit Gudeta & Mahanta, Pinakeswar & Robi, P.S., 2017. "CFD and experimental investigation of flat plate solar water heating system under steady state condition," Renewable Energy, Elsevier, vol. 106(C), pages 24-36.
    • Handle: RePEc:eee:renene:v:106:y:2017:i:c:p:24-36
    DOI: 10.1016/j.renene.2016.12.041
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    References listed on IDEAS

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    Cited by:

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    12. Zhou, Liqun & Wang, Yiping & Huang, Qunwu, 2019. "CFD investigation of a new flat plate collector with additional front side transparent insulation for use in cold regions," Renewable Energy, Elsevier, vol. 138(C), pages 754-763.
    13. Jouybari, H. Javaniyan & Saedodin, S. & Zamzamian, A. & Nimvari, M. Eshagh & Wongwises, S., 2017. "Effects of porous material and nanoparticles on the thermal performance of a flat plate solar collector: An experimental study," Renewable Energy, Elsevier, vol. 114(PB), pages 1407-1418.
    14. Lugo, S. & García-Valladares, O. & Best, R. & Hernández, J. & Hernández, F., 2019. "Numerical simulation and experimental validation of an evacuated solar collector heating system with gas boiler backup for industrial process heating in warm climates," Renewable Energy, Elsevier, vol. 139(C), pages 1120-1132.
    15. Korres, Dimitrios & Tzivanidis, Christos, 2018. "A new mini-CPC with a U-type evacuated tube under thermal and optical investigation," Renewable Energy, Elsevier, vol. 128(PB), pages 529-540.
    16. Moldovan, Macedon & Rusea, Ioana & Visa, Ion, 2021. "Optimising the thickness of the water layer in a triangle solar thermal collector," Renewable Energy, Elsevier, vol. 173(C), pages 381-388.
    17. Bayón-Cueli, C. & Barbón, A. & Bayón, L. & Barbón, N., 2020. "A cost-energy based methodology for small-scale linear Fresnel reflectors on flat roofs of urban buildings," Renewable Energy, Elsevier, vol. 146(C), pages 944-959.
    18. William Quitiaquez & José Estupiñán-Campos & César Nieto-Londoño & Patricio Quitiaquez, 2023. "CFD Analysis of Heat Transfer Enhancement in a Flat-Plate Solar Collector/Evaporator with Different Geometric Variations in the Cross Section," Energies, MDPI, vol. 16(15), pages 1-15, August.

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