Parametric Study of the Airflow Structure in a Solar Chimney

Ghernaout, Badia; Bouabdallah, Saïd; Attia, Mohammed El Hadi; Arıcı, Müslüm; Driss, Zied

doi:10.18280/ijht.380202

Cited by 4 publications

(2 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In computation the number and the form of the control volume constructed the computational domain have a great influence on the precision of the results and the calculation time [20][21][22]. To explore the effect of mesh spacing on numerical solutions, we tested three uniform meshes: 42 3 , 62 3 , 82 3 nodes.…”

Section: Effect Of Mesh Spacingmentioning

confidence: 99%

3D Forced Convection in a Box Containing Two Cylindrical Heat Sources

Bouabdallah¹,

Ghernaout²,

Bellaouar³

et al. 2020

AMA_B

Self Cite

View full text Add to dashboard Cite

Forced convection is a special type of heat transfer in which fluids are forced to move, in order to increase the heat transfer. The aim of this study is to investigate in a numerical simulation of forced convection in a cubic cavity containing two cylindrical heat sources in the middle. The cavity is subjected to an inflow of air inlet from the left and an outlet flow from the right side with the same dimensions of the opening doors (0.1 H). The walls of the cavity are maintained adiabatic. The conservation equations governing the flow of forced convection are solved using the finite volume method that is used by FLUENT –ANSYS Software. Also, a comparison was performed shows good agreement between the numerical results with those available in the literature (numerical, analytical and experimental). The effect of the dimension of cavity (number of Rayleigh) and the velocity of ventilation of the air (number of Reynolds), as well as the dimension between sources cylindrical are presented and discussed. The results obtained show a strong dependence between the geometrical conditions and the structure of the dynamic and thermal field of the flow of forced convection.

show abstract

Section: Effect Of Mesh Spacingmentioning

confidence: 99%

3D Forced Convection in a Box Containing Two Cylindrical Heat Sources

Bouabdallah¹,

Ghernaout²,

Bellaouar³

et al. 2020

AMA_B

Self Cite

View full text Add to dashboard Cite

show abstract

“…The solar chimney is a feasible passive solar heating and cooling solution that uses clean energy rather than fossil fuels [1,2]. Solar radiation is used to boost the temperature of the air, and the buoyancy of warm air is used to speed up the airflow through the system [3][4][5]. The solar chimney is the subject of many studies that have shown how the use of PCM improves its thermal performance, where it is highlighted how the thermal and geometric features of PCMs have a significant impact on overall chimney performance.…”

Section: Introductionmentioning

confidence: 99%

A Numerical Study on an Integrated Solar Chimney with Latent Heat Thermal Energy Storage in Various Arrangements

Buonomo¹,

Golia²,

Manca³

et al. 2022

IJSDP

View full text Add to dashboard Cite

The paper presents a two-dimensional numerical investigation of a solar chimney combined with an absorbing capacity wall in a building’s south façade. The analysis was carried out in Aversa (Italy), in July and December, from sunrise to sunset. The chimney is made up of a converging channel, a vertical absorbing wall, and a two-degree angled glass plate. It is 5.0 m tall, while the height of the channel is 4.0 m, with an inlet of 0.34 m and an outlet portion of 0.20 m. A phase change material with metal foam makes up the thermal energy storage system. Four possible configurations are investigated to identify the ideal hybrid system arrangement in terms of thermal performance; the commercial code Ansys-Fluent is used to solve the problem. The results of the thermal energy storage system with metal foam and PCM are provided in terms of liquid fractions, stored energy, and stream function fields, while the ones of the wall temperature distributions in the channel are reported. Thermal and fluid dynamics behaviours are so evaluated to have some useful indications to improve the system.

show abstract