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Study on Solar Air Collector with Perforated Strips in the Baffles


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DOI: https://doi.org/10.15866/ireme.v13i4.16985

Abstract


In this paper, a three-dimensional study of incompressible turbulent flow through a canal of a solar air collector has been carried out. The canal is provided with  two solid baffles in the first case and two perforated baffles in the second case fixed on the absorber and the insulator. The models of the perforations are in the forms of perforated strips in the baffles and they have a diameter of d=0.005m; their number is 12 per baffle. The working fluid used is air. The form and the position of its perforations allow the creation of secondary flows with the orientation of the flow towards the absorber. The numerical resolution of the transport equations is carried out by using the finite volume method and the k-( turbulent model. The  results are compared with  experimental data. The evolution of axial velocity fields, the pressure coefficients fields, the friction coefficients profiles, the local Nusselt numbers profiles and the temperature distribution profiles are discussed in this work.
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Keywords


Solar Collector; Solid Baffles; Perforated Baffles; Finite Volume Method; k-( Model

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References


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