Analysis of thermo-hydraulic performance of a solar air heater tube with modern obstacles

• Autorzy: Menni Younes , Chamkha Ali J. , Zidani Chafika , Benyoucef Boumédiène

Identyfikatory

DOI

10.24425/ather.2020.134571

• Języki publikacji: EN

Abstrakty

EN

This paper presents a numerical analysis on turbulent flow and forced-convection characteristics of rectangular solar air heater tube fitted with staggered, transverse, V-shape, modern obstacles on the heated walls. Air, whose Prandtl number is 0.71, is the working fluid used, and the Reynolds number considered equal to 6×10 3. The governing flow equations are solved using a finite volume approach and the semi-implicit pressure linked equation (SIMPLE) algorithm. With regard to the flow characteristics, the quadratic upstream interpolation for convective kinetics differencing scheme (QUICK) was applied, and a second-order upwind scheme (SOU) was used for the pressure terms. The dynamic thermo-energy behavior of the V-shaped baffles with various flow attack angles, i.e., 50°, 60°, 70°, and 80° are simulated, analyzed, and compared with those of the conventional flat rectangular baffles with attack value of 90°. In all situations, the thermal transfer rate was found to be much larger than unity; its maximum value was around 3.143 for the flow attack angle of 90° and y = H/2.

Słowa kluczowe

EN

turbulence; heat transfer; friction loss; flow attack; solar air heater tube

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2020
• Tom: Vol. 41, no 3
• Strony: 33--56
• Opis fizyczny: Bibliogr. 44 poz., rys., tab., wykr., wz.

Twórcy

autor

Menni Younes

• Unit of Research on Materials and Renewable Energies, Faculty of Sciences, Abou Bekr Belkaid University of Tlemcen, Algeria

autor

Chamkha Ali J.

• Faculty of Engineering, Kuwait College of Science and Technology, 7th Ring Road, Doha, Kuwait

autor

Zidani Chafika

• Unit of Research on Materials and Renewable Energies, Faculty of Sciences, Abou Bekr Belkaid University of Tlemcen, Algeria

autor

Benyoucef Boumédiène

• Unit of Research on Materials and Renewable Energies, Faculty of Sciences, Abou Bekr Belkaid University of Tlemcen, Algeria

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