• Performance assessment of evacuated U-tube solar collector: a numerical study

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    • Keywords


      Numerical model; evacuated tube solar collector; useful heat gain rate; filler material; U-tube material; working fluid.

    • Abstract


      This paper presents a finite element method based three-dimensional thermal model for predicting the performance of evacuated U-tube solar collector. Numerically predicted working fluid outlet temperature is compared with the experimental data available in the literature and a good agreement is observed between them. The influence of average solar irradiance on efficiency and useful heat gain rate of the solar collector is studied for two different evacuated tube configurations. Employing water and air as working fluid, copper, aluminiumand brass as U-tube material, and graphite, magnesium oxide and aluminium oxide as filler material and the performance of the evacuated tube solar collector is investigated in detail.

    • Author Affiliations



      1. Department of Mechanical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
    • Dates

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