AMMAR Semane
سمان عمار
ammar.semane@univ-msila.dz
0658338603
- Departement of MECHANICAL ENGINEERING
- Faculty of Technology
- Grade PHd
About Me
Science et Technologies
Location
Msila, Msila
Msila, ALGERIA
Code RFIDE- 1972-09-29 00:00:00
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AMMAR Semane birthday
- 2025-10-30
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2025-10-30
Numerical investigation of collector diameter effects in solar chimeny systems
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Citation
Razika IHADDADENE , AMMAR Semane , Razik BENDERRADJI , Alhadj Rouache, ,(2025-10-30), Numerical investigation of collector diameter effects in solar chimeny systems,The First National Symposium on Structural and Materials Mechanics (SNMSM’25),M'sila, Algerie
- 2025-10-10
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2025-10-10
Experimental Analysis and Modeling of the Collector And Absorber Temperatures of the Solar Chimney as a Function of Solar Radiation, Ambient Temperature, and Position
The solar chimney is an innovative technology that harnesses solar energy to generate electricity sustainably. This experimental study presents a modeling approach for predicting collector and absorber temperatures in a small solar chimney prototype. Temperatures were measured at five positions on the collector and absorber under varying solar radiation and ambient conditions. The results demonstrate that local temperatures at each position can be accurately represented by a second-order polynomial regression of solar radiation and ambient temperature, with R² values ranging from 0.973 to 0.989 for the collector and from 0.9619 to 0.9835 for the absorber. A key innovation of this work is the generalization of these local models into a unified thermal model capable of predicting temperatures at any point on the collector or absorber surface. This was achieved by expressing the regression coefficients of the local models as fourth-order polynomial functions of the radial position. Model validation using statistical indices—including R², RMSE, NRMSE, and NSE—demonstrated strong agreement with experimental data. For the absorber, R² = 0.974, NRMSE = 0.0174, and NSE = 0.974; for the collector, R² = 0.9802, NRMSE = 0.0194, and NSE = 0.98. These results confirm the accuracy of the generalized model, providing a practical tool for simulating thermal fields in solar chimneys and optimizing system performance with reduced experimental effort.
Citation
Razika IHADDADENE , AMMAR Semane , Nabila IHADDADENE , Elhouas Bedjeghit, Belhi Guerira, , (2025-10-10), Experimental Analysis and Modeling of the Collector And Absorber Temperatures of the Solar Chimney as a Function of Solar Radiation, Ambient Temperature, and Position, Journal of Renewable Energy and Environment, Vol:12, Issue:4, pages:29-39, Materials and Energy Research Center (MERC) Iranian Association of Chemical Engineers (IAChE)
- 2025-10-07
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2025-10-07
Numerical analysis of the impact of collector diameter on solar chimney performance
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Citation
Razika IHADDADENE , AMMAR Semane , Razik BENDERRADJI , Alhadj Raouache, ,(2025-10-07), Numerical analysis of the impact of collector diameter on solar chimney performance,3rd International Workshop on Environmental Engineering,Sétif, Algerie
- 2025-04-01
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2025-04-01
Study of the variation of temperatures in a solar chimney
In the present study, an experimental investigation was performed to study the effect of mean absorber and collector temperatures on the mean air and chimney temperatures. In the dry climate of Biskra University, experiments were carried out using a solar chimney prototype that presented the following characteristics: 0.50 m for the collector’s radius, 10 cm for the collector’s height, 10 cm for the chimney radius, and 1 m for the chimney’s height. The temperature at the various study points has been measured using temperature measurement systems. The experimental results show that the temperatures of the absorber, collector, and air follow the same pattern. The temperature in the chimney follows the same pattern; it degrades following a linear law depending on the position. The absorber’s mean temperature rises in accordance with the collector’s mean temperature rise, according to a linear law with a coefficient of determination (R²) of 0.94. The mean air temperature rises in tandem with the mean absorber and collector temperatures in a model that follows an exponential law (R2= 0.84). Additionally, the mean temperature of the chimney rises in tandem with the mean temperatures of the absorber and collector, according to a mathematical model following a polynomial law (R2= 0.87). So the absorber temperature is a key parameter that affects the solar chimney performance.
Citation
Razika IHADDADENE , Nabila IHADDADENE , AMMAR Semane , Elhouas BEDJEGHIT, Belhi GUERIRA, , (2025-04-01), Study of the variation of temperatures in a solar chimney, Sigma Journal of Engineering and Natural Sciences, Vol:43, Issue:2, pages:523-532, Sigma
- 2025-02-17
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2025-02-17
Effect of climatic conditions on the performance of a solar chimney
Solar chimneys represent a promising technology for renewable energy production, by exploiting solar irradiation to generate an upward air flow. This study focuses on the experimental analysis and modeling of a prototype, with a particular focus on the collector part. A prototype was built at the University of M’Sila with the following dimensions: collector diameter D=79 cm, chimney height H=139 cm, chimney diameter 7.5 cm, and collector height Hc=10.5 cm. Experimental tests were conducted at the University of Biskra, and the results validated using simulations performed with MATLAB. The study analyzed the influence of ambient temperature Tamb and solar irradiation G on the system performance. The results show that increasing G improves heat transfer under the collector, leading to a significant increase in air temperature and an increased upward flow rate in the chimney. The MATLAB model accurately reproduced the prototype performance, confirming the validity of the experimental data. This work demonstrates the importance of environmental parameters, Tamb and , as well as dimensional choices in the optimization of solar chimneys, while opening perspectives for future improvements.
Citation
Razika IHADDADENE , AMMAR Semane , Elhouas Bedjeghit, Belhi Guerira, ,(2025-02-17), Effect of climatic conditions on the performance of a solar chimney,2nd NATIONAL SEMINAR OF PHYSICS, CHEMISTRY AND THEIR APPLICATIONS (NSPCA’25),BBA, Algerie
- 2025-02-01
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2025-02-01
Study of the variation of temperatures in a solar chimney
In the present study, an experimental investigation was performed to study the effect of mean absorber and collector temperatures on the mean air and chimney temperatures. In the dry climate of Biskra University, experiments were carried out using a solar chimney prototype that presented the following characteristics: 0.50 m for the collector’s radius, 10 cm for the collector’s height, 10 cm for the chimney radius, and 1 m for the chimney’s height. The temperature at the various study points has been measured using temperature measurement systems. The experimental results show that the temperatures of the absorber, collector, and air follow the same pattern. The temperature in the chimney follows the same pattern; it degrades following a linear law depending on the position. The absorber’s mean temperature rises in accordance with the collector’s mean temperature rise, according to a linear law with a coefficient of determination (R²) of 0.94. The mean air temperature rises in tandem with the mean absorber and collector temperatures in a model that follows an exponential law (R2 =0.84). Additionally, the mean temperature of the chimney rises in tandem with the mean temperatures of the absorber and collector, according to a mathematical model following a polynomial law (R2 =0.87). So the absorber temperature is a key parameter that affects the solar chimney performance
Citation
Razika IHADDADENE , Nabila IHADDADENE , AMMAR Semane , Elhouas BEDJEGHIT,, Belhi GUERIRA, , (2025-02-01), Study of the variation of temperatures in a solar chimney, Sigma Journal of Engineering and Natural Sciences, Vol:43, Issue:1, pages:1-10, Yıldız Technical University Press, İstanbul, Turkey
- 2024-12-15
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2024-12-15
Experimental study of temperature changes in the collector and absorber of a solar chimney
In the present study, an experimental investigation was performed to study the mean absorber and collector temperatures. In the dry climate of Biskra University, experiments were carried out using a solar chimney prototype that presented the following characteristics: 0.50 m for the collector's radius, 10 cm for the collector's height, 10 cm for the chimney radius, and 1 m for the chimney's height. The temperature at the various study points has been measured using temperature measurement systems. The experimental results show that the temperatures of the absorber and collector follow the same pattern. The absorber's mean temperature rises in accordance with the collector's mean temperature rise, according to a linear law with a coefficient of determination (R²) of 0.94.
Citation
Razika IHADDADENE , AMMAR Semane , Nabila IHADDADENE , Elhouas Bedgrit, Belhi.guerira, ,(2024-12-15), Experimental study of temperature changes in the collector and absorber of a solar chimney,The First International Congress on Recent Advances in Mathematical, Physical, and Chemical Sciences 1st ICRRAMPCS,Constantine
- 2024-11-21
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2024-11-21
Ambient temperature and solar radiation effects on absorber and collector mean temperature in a solar chimney
The recent increase in the utilization and development of solar chimneys can be attributed to their straightforward design and extensive applicability. This experimental investigation involved the construction of a solar chimney prototype with a collector diameter of 1 meter, which was fitted with ten temperature sensors(five positioned on the absorber and five located on the collector) within the same plane. The experiments were conducted in an arid climatic environment. Temperature variations recorded by the ten sensors, along with ambient temperature and solar radiation levels, were monitored at one-minute intervals. The results indicate that both ambient temperature and solar radiation significantly influence the average temperatures of the absorber and collector. A polynomial model was employed to estimate the variation in mean temperatures of both the absorber and collector in relation to solar radiation and ambient temperature.
Citation
Razika IHADDADENE , Nabila IHADDADENE , AMMAR Semane , Elhouas Bedjeghit, Belhu Guerira, ,(2024-11-21), Ambient temperature and solar radiation effects on absorber and collector mean temperature in a solar chimney,11 th Global Congress on Renewable Energy and Environment,Istanbul (Turquie)
- 2024-10-13
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2024-10-13
Experimental study of the evolution of temperatures in a solar chimeny
The purpose of the current study is to conduct an experimental investigation into the effects of ambient temperature and solar radiation on the average temperature of the absorber and collector of the solar chimney. To achieve this goal, a solar chimney prototype with a collector diameter of 0.79 m, a collector height of 0.105 m, a chimney diameter of 0.075 m, and a chimney height of 1.39 m was constructed at M'sila University. The experiments were conducted in a arid climate at the Biskra University. The results show that the average absorber temperature was higher than the average collector temperature. The two temperatures are related by a polynomial relationship. The ambient temperature and solar radiation have a significant impact on the average temperature changes of the absorber and collector. Mathematical models that describe the evolution of the average collector and absorber temperatures in relation to solar radiation and ambient temperature have been proposed.
Citation
Razika IHADDADENE , AMMAR Semane , Elhouas Bedgerit, Belhi Guerira, ,(2024-10-13), Experimental study of the evolution of temperatures in a solar chimeny,Séminaire national; Eau, Environnement et Energies renouvelables,M'sila
- 2023-06-24
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2023-06-24
Experimental study of temperature evolution in a solar chimney
A chimney solar power plant has been known since recent times as a utility scale solar power plant. This technology is applicable in desert areas where solar radiation and ambient temperature are strong. This study presents an experimental study on the temperature evolution of the collector and absorber in a solar chimney under real conditions. The experiments were done at the university of Biskra (34° 51′ 00′′ north, 5° 44′ 00′′ east), located in the north of the Algerian Sahara. The weather in this city is subtropical desert. The used solar chimney prototype was made at the mechanical department of Mohamed Boudiaf University in M'sila (Algeria). This prototype is composed of a collector with a diameter of around 79 cm in hollow Plexiglas, an absorber made of steel and the solar tower made of PVC plastic, 1.39 high and 7.5 cm in diameter. According to the results, the temperature in the absorber or collector increases as one gets closer to the center. Those temperatures depend on the position. At any position, the absorber temperature is greater than the collector temperature. A mathematical model relating the mean absorber temperature to the mean collector temperature was proposed.
Citation
Razika IHADDADENE , AMMAR Semane , EL HOUAS Bedjeghit , Belhi guerira, ,(2023-06-24), Experimental study of temperature evolution in a solar chimney,1. BİLSEL INTERNATIONAL WORLD SCIENCE AND RESEARCH CONGRESS,Istanbul (Turkey)