Simulation study of solar air collector with offset strip fin absorber plate for drying agricultural products in a semi-arid climate

Benseddik, A.; Aberqi, Ahmed; Khanniche, R.; Allaf, Abdul

doi:10.18280/ijht.360219

Cited by 7 publications

(3 citation statements)

References 44 publications

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“…The outlet temperature is the most important in the calculation of the flat plate solar collector thermal efficiency. Increasing of the outlet temperature leads to increasing of thermal efficiency of the flat plate solar collector [19][20]. Similar results exist in the literature.…”

Section: Resultssupporting

confidence: 86%

Thermal performance amelioration of flat plate solar collector of an indirect dryer

Blaise¹,

Magloire²,

Gbaha³

2018

MMEP

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Article presents an experimental investigation for the comparison of thermal performance of three different configurations flat plate solar collector. These flat plate solar collectors consist of glass cover and aluminium absorber plate which is painted with black paint. The edge and bottom surfaces are thermally insulated with a polystyrene layer for the first configuration, a polystyrene layer covered with a sheet of aluminium paper for the second one and a polystyrene layer covered with a sheet of aluminium paper and containing baffles for the third configuration. In this experiment, thermal efficiency of flat plate solar collector integrated with baffles was studied and compared with the two ordinary flat plate collectors. The results showed that integrating flat plate solar collector with baffles significantly increased the thermal efficiency of the system. It was noted that a mean thermal efficiency is 20.3 %, 29.8 % and 35.1 % for the first, second and third configuration, respectively. The results show a maximum temperature rise of 23.5 °C, 31.6 °C and 34.6 °C with respect to the inlet air temperature, for the first, second and third configuration, respectively. Baffles improve the thermal performance of the flat plate solar collector by increasing the outlet temperature.

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Section: Resultssupporting

confidence: 86%

Thermal performance amelioration of flat plate solar collector of an indirect dryer

Blaise¹,

Magloire²,

Gbaha³

2018

MMEP

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“…In addition, the dried crops through sun drying suffer from the possibility of being stolen, damaged and infected by animals, and un-uniformly treated [7]. To enhance the drying process and avoid the aforementioned drawbacks, numerous solar dryer types have been proposed and improved [8,9]. According to the heat source or the operation mode, solar dryers could be categorized into virous types.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Innovative Indirect Solar Dryers

Yassen¹,

Al-Jethelah²,

Dheyab³

2021

IJHT

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The present work experimentally studied two novel solar dryers’ designs, novel indirect solar dryer (NISD) and novel mixed indirect solar dryer (NMISD). The purpose behind this work is to compare the thermal performance of the proposed dryers with that of a traditional indirect solar dryer (TISD). The testing method involved building and thermally testing the three dryers. The NISD is a novel drying chamber with three absorbed surfaces. The NMISD consisted of a flat plate solar collector and NISD. The air temperature at the drying chamber entrance increased by 60% and 68% for the TISD and NMISD, respectively. In the lower space of the drying chamber, the air temperature was decreased by 35% while increased by 39% for the NISD and NMISD, respectively, compared to the TISD. The air temperature in the upper space of the drying chamber increased by 14% and 49% for the NISD and NMISD, respectively, compared to the TISD. The temperature variations through the drying chamber were -26%, 33%, and 3% in the TISD, NISD, and NMISD, respectively. The thermal efficiencies of the NISD and NMISD were 9% and 55%, respectively, higher than the TISD’s.

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“…In this context, Benseddik et al have been studied a solar air collector with offset strip fin absorber plate, and they concluded that, airflow through the offset strip fin passage has significantly increased thermal exchange surface, by obtaining a turbulent flow favoring the advection heat exchange between the air and the absorber [8]. A solar air heater with different absorber plates and different arrangements has been experimentally investigated by Arunachalam and Edwin [9].…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of a Longitudinal Solar Dryer in Semi-Arid Area; Case Study

Bouhdjar¹,

Hanini²,

Boualit³

et al. 2019

I2M

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A numerical simulation to predict the thermal performance of a longitudinal solar dryer has been carried out. For this, a mathematical model, based on the finite element method, has been developed to evaluate the thermal behavior of the solar dryer using a control system. The main objective of the used control system is to maintain the drying temperature inside a suitable range for the product to dry, under varying weather conditions, over the time drying process. This is achieved through many different steps. As, an example, at the beginning of drying process when solar radiation is low, the air flow rate at the inlet varies between Re=25 and Re=85. In other hand, when solar radiation is higher, fresh air is injected. The outcomes of simulation work showed that the obtained results are generally satisfactory. Nonetheless, this model can be further refined to obtain better results, as a more stable gradient temperature, over the full drying period. Moreover, it is worthy mentioned that thermal storage system can be combined with the studied solar drier, in the way to compensate the heat insufficiency, during low solar radiation days.

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Simulation study of solar air collector with offset strip fin absorber plate for drying agricultural products in a semi-arid climate

Cited by 7 publications

References 44 publications

Thermal performance amelioration of flat plate solar collector of an indirect dryer

Thermal performance amelioration of flat plate solar collector of an indirect dryer

Experimental Study of Innovative Indirect Solar Dryers

Numerical Study of a Longitudinal Solar Dryer in Semi-Arid Area; Case Study

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