Experimental study of new solar air heater design

Mahboub, Chawki; Moummi, Noureddine; Brima, Abdelhafid; Moummi, Abdelhafid

doi:10.1080/15435075.2014.968922

Cited by 32 publications

(13 citation statements)

References 33 publications

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“…They have taken the initial design proposed in the reference [11]. The Computational Fluid Dynamic (CFD) model is validated by the results reported by Mahboub et al [11]. They observed that secondary vortex formation near the absorber wall increases the Nusselt number significantly.…”

Section: Introductionmentioning

confidence: 88%

“…Two years later; Singh et al [12] investigated numerically various curved solar air heater designs that shows significant enhancement of heat transfer and thermal efficiency. They have taken the initial design proposed in the reference [11]. The Computational Fluid Dynamic (CFD) model is validated by the results reported by Mahboub et al [11].…”

Section: Introductionmentioning

confidence: 92%

“…Another variant has been developed, characterized by the curvilinear shape by Mahboub et al [11]. They designed, constructed and experimented a new SAH model, characterized by the curvilinear shape.…”

Section: Introductionmentioning

confidence: 99%

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Measurement and Analysis of Thermal-Hydraulic Performance of Curved and Plate Flat Solar Air Heaters; A Comparative Study

Guellai¹,

Labed²,

Moummi³

et al. 2019

I2M

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This paper presents a comparative study between the thermal-hydraulic performances of two types of solar air heaters (SAHs) having the same components: i) is a simple pass solar flat plate collector, and ii) is a simple pass curvilinear solar collector. Thus, we carried out studies to compare the thermal efficiencies and hydraulic performances of both SAHs, in order to compare their effective efficiencies. The experimental measures show that, at different air mass flow rates, the highest efficiencies were obtained from the curvilinear SAH and no significant difference between the pressure drops in both SAHs is noticed. In addition, this study has allowed us to show that the curvilinear form is an efficient method to improve the SAH performances, it permits a good temperature distribution in the air flow duct of the collector.

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Section: Introductionmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 92%

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Measurement and Analysis of Thermal-Hydraulic Performance of Curved and Plate Flat Solar Air Heaters; A Comparative Study

Guellai¹,

Labed²,

Moummi³

et al. 2019

I2M

Self Cite

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“…Convergence criteria have been considered of order 10 I• for energy equation and 10 I' order for the velocity component and the momentum equation. (Mahboub et al, 2016;Nivedita et al, 2017;Singh & Singh, 2018). However, in this present simulation Reynolds number (Re) and Dean number ( -) are in the range of 2209-6058 and 180-494, respectively which comes under turbulent range (Mahboub et al, 2016;Nivedita et al, 2017;Singh & Singh, 2018), hence turbulent flow model has been considered during the entire simulation run.…”

Section: Boundary Condition and Governing Equationsmentioning

confidence: 99%

Performance Analysis of Flat-Plate and V-groove Solar Air Heater Through CFD Simulation

Desisa

Shekata

2020

Int. J. Renew. Energy Dev.

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The simplicity of solar flat plate air collector and freely availability of solar energy sources attracts attention to collector optimization. This study aims to evaluate the effect of double pass airflow on the performance of flat plate air collectors. Indirect type solar dryer performance characteristics analysis was done through CFD simulation with three different shapes (smooth, rough, and V-grooved) keeping the collector insulated and drying chamber act as a vertical chimney. The average thermal efficiency of the V-grooved surface, smooth surface, and rough surface is 90%, 78%, and 62% respectively. The total area of the collector is 1.20 * 2.0 = 2.60 m2 with the drying cabinet 1.20 * 0.65 * 1.00 m (width * depth * height) and 0.005m thick glass cover. Observed pressure drop at the inlet of the drying chamber is high in the case of smooth surface, medium in a rough surface, and low in a v-grooved plate that will allow enough gas pressure to pass through all the compartment of the process at full-scale. The air mass flow rate is the most important and effective factor during drying. The humidity of the air, as well as air velocity, is also an important factor for improving the drying rate.

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“…al. (11) An energy and exergy study has been done Gupta D et al (2011) on a double pass flat plate solar air collector with and without porous medium embedded inside the lower channel of the collector. The obtained results show that employing porous medium can increase the thermal efficiency of the collector of more than 30%, while a second law analysis shows that the friction with the porous medium can also increase the pressure drop in the air.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Rectangular Ribs Roughed Solar Air Heater: A CFD Based Study

Pandya¹

2019

IJRASET

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A perfect design can be a most effective factor in terms of cost for a solar air heater. As studied, there are so many techniques have been proposed to enhance the solar air heaters' efficiency by adding turbulence promoters or by improving designing concepts. The aim of this research is to find best solution to get rid of the inconvenience results from the mostly used solar air heater designs with general heat transfer enhancement techniques. Isn this study a design has been proposed with rectangular roughness at the absorber plate and compared with smooth duct 20 mm x 100 mm x 560 mm (Thakur et. al., 2016) experimental and CFD simulation based data. A computational model has been prepared to study the effect or roughness in the solar air heater under the different mass flow rates or Reynolds Number range 5000-20000. The performance was evaluated in terms of thermal and effective efficiency for Jaipur, India location. The Rosseland Solar Radiation model was used for the study to find out the different seasonal effect on the duct. The validation of the present study is done with experimental data of Thakur et. al., 2016. It is observed that the solar air heater with roughed rectangular ribs is more efficient as compare to simple structure and it is considerably higher heat transfer rate in the month of June among 5 different months in comparison with the efficiency range of the conventional smooth flat plate heaters for similar operating conditions.

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Experimental study of new solar air heater design

Cited by 32 publications

References 33 publications

Measurement and Analysis of Thermal-Hydraulic Performance of Curved and Plate Flat Solar Air Heaters; A Comparative Study

Measurement and Analysis of Thermal-Hydraulic Performance of Curved and Plate Flat Solar Air Heaters; A Comparative Study

Performance Analysis of Flat-Plate and V-groove Solar Air Heater Through CFD Simulation

Numerical Analysis of Rectangular Ribs Roughed Solar Air Heater: A CFD Based Study

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