Determination of the heat transfer coefficient by convection, according to shape of the baffles (solar air collector)

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Zouhair Aouissi
Foued Chabane
Mohamed-Salah Teguia
Djamel Bensahal
Noureddine Moummi
Abdelhafid Brima


This experimental study and mathematical modelling aim to improve the heat transfer by convection in different cases of transversal baffles inside a duct of a solar air collector. The study enabled us to formulate a mathematical equation of the heat transfer coefficient as a function of pressure drop and the mass flow rates. This mathematical model gave results that are close to the actual results in different inclination angles of the baffles (45°, 90°, 135°, and mixed between 135°and 45°). Through these results, it is found that the best heat transfer coefficient by convection was in the mode where mceclip0.png = 90° and in the mixed mode. It was also noticed that the pressure drop in the mixed mode was smaller. With respect to the thermo-hydraulic performance factor (THPF), the case mceclip1.png =45° was retained as the best case.

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Z. . Aouissi, F. . Chabane, M.-S. . Teguia, D. . Bensahal, N. . Moummi, and A. . Brima, “Determination of the heat transfer coefficient by convection, according to shape of the baffles (solar air collector)”, J. Ren. Energies, vol. 25, no. 1, pp. 43 -, Oct. 2022.


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