Étude numérique d'un séchoir solaire fonctionnant en convection forcée

Belghit, Abdelhamid; Belahmidi, Mustafa; Bennis, A.; Boutaleb, B. C.; Bénet, S.

doi:10.1016/s0035-3159(97)87754-9

Cited by 22 publications

(8 citation statements)

References 3 publications

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“…It consists in cutting the system in fictitious slices in the direction of airflow and in writing the balanced equations on each control volume. It permits especially to predict the yield of the system and the outlet temperature of air (Belghit et al, 1997;Duffie and Beckmann, 1980).…”

Section: Mathematical Models Of Solar Collectormentioning

confidence: 99%

Thermal performance modelling of solar collector with heat storage

Tchaya

Kampel

Havet

et al. 2017

IJESMS

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Solar drying is used to reduce post-harvest losses. An indirect solar dryer with oriented air is presented. It provides the ability to store energy. This work predicts the outlet temperature at the collector in the single-face and bifacial modes of collector. The heat balance applied to each element is determined taking into account the temporal term which characterises storage in the material. The simulation is done using Matlab software. Both models of the collector are validated by comparing the experimental and theoretical curves. The results show that the two curves of outlet temperatures have the same profile when the global heat transfer coefficient loss is 2.94 W.m -2 .K -1 , the contact resistance between the absorber and the insulator is 0.025 W -1 .m2.K and the velocity is 0.2 m.s -1 . The contact resistance has a significant influence on the outlet air temperature but not accessible for controlling temperature compared to the velocity. G.B. Tchaya et al.Martin Kamta is an Associate Professor in Electronics at the University of Ngaoundere. His main range of scientific interests is physics of semiconductor devices, electronics and photovoltaic systems. He has published three articles in electron spin resonance (ESR) of defects in III-V materials, three articles in superconducting materials, one article and six communications about photovoltaic systems. He has supervised several PhD, several Master's degree theses and several Master engineering.Michel Havet received his Doctorate in Aerodynamics, Fluid Mechanics, Combustion and Thermal from the University of Poitiers in 1995. He is currently in charge of Food Process Engineering Department at ONIRIS, France. His research activities concern the aerodynamics and increased transfers in food processing. He has published close to 25 papers in refereed journals and has supervised several Masters and PhD theses.César Kapseu is a Professor of Process Engineering at the University of Ngaoundere. He has published close to 100 papers in refereed journals and is a holder of more than ten prestigious awards. He has supervised several Masters and PhD theses. He has equally held several posts of responsibilities at the University of Ngaoundere.

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Section: Mathematical Models Of Solar Collectormentioning

confidence: 99%

Thermal performance modelling of solar collector with heat storage

Tchaya

Kampel

Havet

et al. 2017

IJESMS

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“…To simplify the study of the heat and mass transfers that had been coupled in the drying system, the following hypotheses [2,3] were assumed valid:…”

Section: Simplifying Hypothesesmentioning

confidence: 99%

“…The model draws on the methods of the mechanics of continuous media applied to hygroscopic porous media, which consist in locally expressing the laws of the conservation of mass and energy and averaging them in a reference volume [2,3].…”

Section: Model Equationsmentioning

confidence: 99%

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Analysis of the convective drying of residual sludge: from the experiment to the simulation

Amadou¹,

Beck²,

Mosé³

et al. 2006

WIT Transactions on Ecology and the Environment, Vol 95

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The drying of residual sludge is a current environmental problem not sufficiently described in the literature, hence research investigations on this drying process are required. Sun drying sludge whilst covered is becoming increasingly attractive for small and medium sized wastewater treatment plants. The control of the quality of the dry product is becoming more and more necessary in order to ensure effectivity. Then new mathematical models should integer these requirements and consider the phenomena of shrinkage. This work gives a mathematical formulation of the different transfer phenomena (heat, mass), which describe the process. The model tries to be relatively simple but sufficiently complete in order to predict and analyze the distribution of temperature, and the moisture during the process. The developed nonlinear differential equations were solved by the classical fourth-order Runge-Kutta method. A validation of these results is achieved by the comparison of the numerical and experimental data.

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“…We have adopted the method used for forced convection solar dryers (Belghit et al, 1997). Furthermore, we take into account the shrinkage phenomenon as well as the physical and thermal property variations of the product as a function of its moisture content and temperature.…”

Section: Mathematical Modelmentioning

confidence: 99%

Numerical and experimental study of dryer in forced convection

Youcef-Ali

Moummi

Desmons

et al. 2001

Int. J. Energy Res.

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SUMMARYA numerical simulation model is developed to predict the forced convection performance of a dryer. This model takes into account the shrinkage phenomenon of the products during the drying process. The experimental results of the potato drying are obtained in climatic conditions similar to conditions found in natural open-air drying when the dryer is fed by air heated by a solar air #at plate collector. After a study of the in#uence of parameters of the drying air on the product during the drying process, we expose the experimental results and compare them with those calculated by the theoretical model.

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Étude numérique d'un séchoir solaire fonctionnant en convection forcée

Cited by 22 publications

References 3 publications

Thermal performance modelling of solar collector with heat storage

Thermal performance modelling of solar collector with heat storage

Analysis of the convective drying of residual sludge: from the experiment to the simulation

Numerical and experimental study of dryer in forced convection

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