Experimental study of thermal performance improvement of a solar air flat plate collector through the use of obstacles: application for the drying of ‘yellow onion’

Ahmed-Zaïd, A.; Messaoudi, Hamza; Abenne, A.; Ray, M. Le; Desmons, J.Y.; Abed, Balsam H.

doi:10.1002/(sici)1099-114x(19991010)23:12<1083::aid-er498>3.0.co;2-y

Cited by 24 publications

(5 citation statements)

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“…Esen (2008) developed experimental energy and exergy analyses of a double-Fow solar air heater having different obstacles on absorber plates. YoucefAli and Desmons (2006) tested a solar collector equipped with offset rectangular plate fin absorber plate, and also those concerning the introduction of obstacles in the dynamic air vein of the collector in order to obtain a turbulent flow that favours the thermal exchange by convection, and hence the maximal extraction of the absorber energy, as shown in Ahmed-Zaid et al (1999), Abdullah et al (2003), Ben Slama (2007), Karsli (2007), Aoues et al (2008), Hikmet et al (2009a, Sopian et al (2009) andOzgen et al (2009).…”

Section: Introductionmentioning

confidence: 99%

Thermal performance improvement of solar air flat plate collector: a theoretical analysis and an experimental study in Biskra, Algeria

Aoues

Moummi

Zellouf

et al. 2011

International Journal of Ambient Energy

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This article presents the results of the first experimental investigation of the performance of solar air flat plate collector at Biskra (latitude 34 48 0 N and longitude 5 44 0 E), Algeria. The thermal efficiency between absorber plate and air in flat plate solar collector has been enhanced by introducing obstacle rows in the dynamic air vein of the collector. For this objective, a flat plate solar collector, of 1.73 m 2 area and 25 mm air gap, has been designed and constructed. These obstacles formed with two parts: first part is perpendicular to fluid flow and the second part is inclined, they are mounted in a staggered pattern, oriented perpendicular to the fluid flow and soldered to the back plate. The solar air heater was mounted on a stand facing south at inclination angle, and it was tested under the environmental conditions. Moreover, a theoretical approach is employed for determination of the thermal performances of this collector where the temperatures of all components of the collector and outlet air are predicted. Comparisons among the experimental and theoretical results considered are reported.

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Section: Introductionmentioning

confidence: 99%

Thermal performance improvement of solar air flat plate collector: a theoretical analysis and an experimental study in Biskra, Algeria

Aoues

Moummi

Zellouf

et al. 2011

International Journal of Ambient Energy

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“…In this context, and according to numerous research studies, the integration of obstacles in the air passage channel presents an effective method for improving the convective heat transfer process by creating turbulence, thereby minimizing dead zones. Indeed, the use of fin types, OT, OIF1, WT, WDL1, and WOL1 [1], and the integrating plus shaped baffles [2] or the planting of triangular, circular, and hexagonal obstructions [3], prove the creation of a turbulent flow, a good distribution of the fluid resulting in the reduction of dead zones.…”

Section: Introductionmentioning

confidence: 99%

CFD Numerical Investigation of a New Solar Flat Air-Collector Having Different Obstacles with Various Configurations and Arrangements

Rouissi

Naili

Jarray

et al. 2021

Mathematical Problems in Engineering

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This work deals with a numerical parametric optimization study of a new Solar Flat Air Collector (SFAC) configuration. The CFD numerical parametric study investigates various SFAC structures inside the air cavity without obstacles and with spherical, cubic, cylindrical, and pyramidal obstacles. The study optimizes the most convenient configuration and arrangement that allow for the increase of the heat-transfer surface and to make the flow homogeneous in order to generate turbulence zones inside the SFAC air cavity. The result shows that the thermal performances of the cubic form are close to those of the spherical obstacles. Another set of simulations was performed to evaluate the performances of the cubic shape baffles for three orientation angles equal to 0°, 22.5°, and 45°, respectively. Each configuration has three forms of arrangement with a relative roughness pitch (b/a) varying between 2, 4, and 6. The results of the simulation study showed that the relative roughness pitch, the Reynolds number, as well as the angle of orientation influence the performance and the operation of the SFAC. The results of the simulations showed that the combination of an orientation of 45° with a roughness pitch of b/a = 2 increases the SFAC thermal performances, which can reach 85%.

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“…Solar air flat plate collectors used of obstacles for application for the drying of grape are studied by Abene, A. et al [11]. Ahmed-Zaid, A. et al [12] have optimized the performance of the drying unit of the agricultural products by using of the obstacles in the collector duct. Karsli, S. [13] analysis a performance of four types of air heating flat plate solar collectors: a finned collector with an angle of 75°, a finned collector with an angle of 70°, a collector with tubes, and a base collector for drying applications.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of drying of green chili by solar air flat plate collector used obstacles

Aoues

Zellouf²,

Labed³

et al. 2017

mech

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Experimental study of thermal performance improvement of a solar air flat plate collector through the use of obstacles: application for the drying of ‘yellow onion’

Cited by 24 publications

References 1 publication

Thermal performance improvement of solar air flat plate collector: a theoretical analysis and an experimental study in Biskra, Algeria

Thermal performance improvement of solar air flat plate collector: a theoretical analysis and an experimental study in Biskra, Algeria

CFD Numerical Investigation of a New Solar Flat Air-Collector Having Different Obstacles with Various Configurations and Arrangements

Experimental study of drying of green chili by solar air flat plate collector used obstacles

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