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Titre : Étude, conception et réalisation d’un séchoir solaire indirect. Type de document : texte imprimé Auteurs : Abdelouahab Boubeghal, Auteur ; Abla Chaker, Directeur de thèse Mention d'édition : 14/12/2021 Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2021 Importance : 135 f. Format : 30 cm. Note générale : 1 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
PhysiqueTags : physique: Physique Energétique Séchoir solaire indirect convection naturelle rayonnement solaire cinétique de séchage tomate henné simulation numérique Indirect solar dryer natural convection solar radiation drying kinetics tomato henna numerical simulation مجفف شمسً غٌر مباشر الحمل الحراري الطبٌعً الإشعاع الشمس حركٌة التجفٌف طماطم الحناء المحاكاة الرقمٌة Index. décimale : 530 Physique Résumé :
Currently, solar drying is among the most important applications of solar energy. This type of drying is one of the most suitable solutions for preserving agricultural products, especially in developing countries. In order to improve the solar drying process, a new indirect solar dryer with natural convection was designed, built, and tested in the climatic conditions of the Adrar region (Algerian Sahara). The construction and experimentation phases were preceded by modeling of the dryer. The heat balances of its main components, drying chamber and solar collector, were established, and the resulting equations were solved by the 4th order Range Kutta method. The effect of many parameters on the drying kinetics was examined. In order to validate on the one hand the numerical results and to demonstrate on the other hand the efficiency of the proposed prototype, measurement companions of many parameters (solar radiation, temperatures of the horizontal and vertical absorbers of the solar collector, temperatures in and at the outlet of the latter, temperature, and humidity of the drying air, water content of tomato and henna products), were carried out for four days, one per season. The results obtained strongly encourage the installation of the proposed indirect solar dryer in the Saharan environment. Such a device will undoubtedly make it possible to conserve the surplus crops of agro-food products and medicinal plants, limit or even eliminate the significant losses recorded each year. Such a device will undoubtedly make it possible to conserve the surplus crops of agro-food products and medicinal plants, limit or even eliminate the significant losses recorded each year. The device will undoubtedly contribute to the socioeconomic development of these desert regions.
Note de contenu :
Annexes.
Diplôme : Doctorat en sciences En ligne : ../theses/physique/BOU7840.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=11672 Étude, conception et réalisation d’un séchoir solaire indirect. [texte imprimé] / Abdelouahab Boubeghal, Auteur ; Abla Chaker, Directeur de thèse . - 14/12/2021 . - جامعة الإخوة منتوري قسنطينة, 2021 . - 135 f. ; 30 cm.
1 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
PhysiqueTags : physique: Physique Energétique Séchoir solaire indirect convection naturelle rayonnement solaire cinétique de séchage tomate henné simulation numérique Indirect solar dryer natural convection solar radiation drying kinetics tomato henna numerical simulation مجفف شمسً غٌر مباشر الحمل الحراري الطبٌعً الإشعاع الشمس حركٌة التجفٌف طماطم الحناء المحاكاة الرقمٌة Index. décimale : 530 Physique Résumé :
Currently, solar drying is among the most important applications of solar energy. This type of drying is one of the most suitable solutions for preserving agricultural products, especially in developing countries. In order to improve the solar drying process, a new indirect solar dryer with natural convection was designed, built, and tested in the climatic conditions of the Adrar region (Algerian Sahara). The construction and experimentation phases were preceded by modeling of the dryer. The heat balances of its main components, drying chamber and solar collector, were established, and the resulting equations were solved by the 4th order Range Kutta method. The effect of many parameters on the drying kinetics was examined. In order to validate on the one hand the numerical results and to demonstrate on the other hand the efficiency of the proposed prototype, measurement companions of many parameters (solar radiation, temperatures of the horizontal and vertical absorbers of the solar collector, temperatures in and at the outlet of the latter, temperature, and humidity of the drying air, water content of tomato and henna products), were carried out for four days, one per season. The results obtained strongly encourage the installation of the proposed indirect solar dryer in the Saharan environment. Such a device will undoubtedly make it possible to conserve the surplus crops of agro-food products and medicinal plants, limit or even eliminate the significant losses recorded each year. Such a device will undoubtedly make it possible to conserve the surplus crops of agro-food products and medicinal plants, limit or even eliminate the significant losses recorded each year. The device will undoubtedly contribute to the socioeconomic development of these desert regions.
Note de contenu :
Annexes.
Diplôme : Doctorat en sciences En ligne : ../theses/physique/BOU7840.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=11672 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BOU/7840 BOU/7840 Thèse Bibliothèque principale Thèses Disponible
Titre : Simulation et optimisation d’un modèle de capteur cylindro-parabolique Type de document : texte imprimé Auteurs : Taqiy Eddine Boukelia, Auteur ; Mohamed-Salah Mecibah, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2016 Importance : 173 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
Génie MécaniqueTags : Cylindro-parabolique Centrale Optimisation Performance Rayonnement solaire Simulation Optimization Parabolic trough Plant Solar radiation أشعة شمسية أداء تحسين لاقط مقعر ذو قطع مكافىء محاكاة محطة Index. décimale : 620 Génie Mécanique Résumé : In the first part of thesis, we had started by the estimation of the Algerian solar radiation potential. Because the use of parabolic trough solar collectors implies that these systems only work with the direct normal irradiance (DNI). For this purpose, a proposed methodology for estimating the DNI in the presence or the absence of measured global and diffuse irradiances. When applying the proposed methodology for the calculation of DNI for three Algerian ground stations, we obtained better performances than those of five spatial databases data. Furthermore, an analysis of
optical and thermal performances of a parabolic trough solar collector has been presented. The solar radiation intercepted by the solar collector in different modes of tracking, the incidence angle modifier, the row shadowing and the end loss, in addition to the thermal losses and the conversion efficiency in every moment can be calculated using the developed model in this study.
The third part presents the design of the power block with a steam regenerative 50 MW
Rankine cycle, for solar installations with parabolic trough solar concentrators, and using two different fluids: thermic oil and molten salt. Due to the difference in the main stream parameters of the two power blocks, we can note that the power cycle efficiency at the assumed nominal conditions of the solar salt plant is higher than Therminol VP-1. While the fourth part of our study is based on evaluation and comparison of eight different configurations of these plants (with molten salt and thermic oil, with and without thermal storage system and backup system) in terms
of their design, thermodynamic yield (energetic and exergetic), economic factors and the environmental impacts. The results indicate that the configurations with integrated thermal energy storage and fossil fuel backup system are found to be more techno-economical, but on the other hand, they are less environment friendly.
In the last part, we optimized the two plants using the artificial neural network method. The results show that it is possible to get minimum values of LCOE of 8,3 and 7,0 cent $/kWh for oil and salt configurations, respectively. Moreover, a 4E (energy–exergy–environment–economic) comparison of the optimized plants is studied, in order to choose the best technology to be adapted in the viability study for Algerian locations. According to the feasibility analysis, the semi-arid and arid Algerian sites are suitable for realization of parabolic trough power plants with integrated
thermal energy storage and fuel backup system.Diplôme : Doctorat En ligne : ../theses/gmecanique/BOU6864.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10178 Simulation et optimisation d’un modèle de capteur cylindro-parabolique [texte imprimé] / Taqiy Eddine Boukelia, Auteur ; Mohamed-Salah Mecibah, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2016 . - 173 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Génie MécaniqueTags : Cylindro-parabolique Centrale Optimisation Performance Rayonnement solaire Simulation Optimization Parabolic trough Plant Solar radiation أشعة شمسية أداء تحسين لاقط مقعر ذو قطع مكافىء محاكاة محطة Index. décimale : 620 Génie Mécanique Résumé : In the first part of thesis, we had started by the estimation of the Algerian solar radiation potential. Because the use of parabolic trough solar collectors implies that these systems only work with the direct normal irradiance (DNI). For this purpose, a proposed methodology for estimating the DNI in the presence or the absence of measured global and diffuse irradiances. When applying the proposed methodology for the calculation of DNI for three Algerian ground stations, we obtained better performances than those of five spatial databases data. Furthermore, an analysis of
optical and thermal performances of a parabolic trough solar collector has been presented. The solar radiation intercepted by the solar collector in different modes of tracking, the incidence angle modifier, the row shadowing and the end loss, in addition to the thermal losses and the conversion efficiency in every moment can be calculated using the developed model in this study.
The third part presents the design of the power block with a steam regenerative 50 MW
Rankine cycle, for solar installations with parabolic trough solar concentrators, and using two different fluids: thermic oil and molten salt. Due to the difference in the main stream parameters of the two power blocks, we can note that the power cycle efficiency at the assumed nominal conditions of the solar salt plant is higher than Therminol VP-1. While the fourth part of our study is based on evaluation and comparison of eight different configurations of these plants (with molten salt and thermic oil, with and without thermal storage system and backup system) in terms
of their design, thermodynamic yield (energetic and exergetic), economic factors and the environmental impacts. The results indicate that the configurations with integrated thermal energy storage and fossil fuel backup system are found to be more techno-economical, but on the other hand, they are less environment friendly.
In the last part, we optimized the two plants using the artificial neural network method. The results show that it is possible to get minimum values of LCOE of 8,3 and 7,0 cent $/kWh for oil and salt configurations, respectively. Moreover, a 4E (energy–exergy–environment–economic) comparison of the optimized plants is studied, in order to choose the best technology to be adapted in the viability study for Algerian locations. According to the feasibility analysis, the semi-arid and arid Algerian sites are suitable for realization of parabolic trough power plants with integrated
thermal energy storage and fuel backup system.Diplôme : Doctorat En ligne : ../theses/gmecanique/BOU6864.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10178 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BOU/6864 BOU/6864 Thèse Bibliothèque principale Thèses Disponible Contribution à l’étude de nouvelles technologies solaires destinées a la production d’eau pour les sites isoles. / Zakaria Haddad
Titre : Contribution à l’étude de nouvelles technologies solaires destinées a la production d’eau pour les sites isoles. Type de document : texte imprimé Auteurs : Zakaria Haddad, Auteur ; Abla Chaker, Auteur Mention d'édition : 29/12/2020 Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2020 Importance : 121 f. Format : 30 cm. Note générale : 1 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
PhysiqueTags : physique: Physique Energétique Distillation distillateur solaire à mèche irradiation solaire modèle de Sivkov modèle linéaire wick solar till solar radiation Sivkov model linear model التقطير المقطر الشمسي بالقماش الإشعاع الشمسي نموذج سيفكوف النموذج الخطي Index. décimale : 530 Physique Résumé :
A new design of the basin-type solar still with the objective of increasing productivity is proposed. The idea is to use a rotating vertical black wick (VRW) in front of the distiller back wall that will act as an additional absorption and evaporation zone. The combination of the capillary action of the wick and the rotary action within the distiller significantly improves the productivity and thermal efficiency of the conventional solar distiller. A series of experimental tests was carried out at the meteorological station of M'sila to evaluate the contribution of this rotating wick to the improvement of the distiller's
performance. The comparison with the simple solar distiller shows that production of the modified distiller has been increased by about 14.7% in summer and 51.1% in winter. In addition, the economic study shows that the estimated cost of the distilled water is approximately 0.011 $/kg and the payback of the proposed solar distiller is estimated at 78 days. Due to the lack of data on solar irradiation, and the need for this parameter to simulate their effect on the performance of solar systems, interest has been brought to the study of two types of estimation models of global solar irradiation existing in the literature. For the first type, which is based on the duration of sunshine, the linear, quadratic and cubic models were used
to estimate global solar irradiation for the Ksar Challala site (latitude 35.10N). The results show that the linear model has the smallest errors by contribution to the other two and can thus be retained for the site of Ksar Challala. For the second type, which is based on sunshine duration and sun height, the Sivkov model
was used for three sites in Algeria, Constantine, Dar El-Beida and Ksar Challala, of respective latitudes 36.17N, 36.41N and 35.10N. The results show that this one is well adapted to estimate the monthly average global solar irradiation for the north of Algeria with a good degree of precision.
Diplôme : Doctorat en sciences En ligne : ../theses/physique/HAD7689.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=11523 Contribution à l’étude de nouvelles technologies solaires destinées a la production d’eau pour les sites isoles. [texte imprimé] / Zakaria Haddad, Auteur ; Abla Chaker, Auteur . - 29/12/2020 . - جامعة الإخوة منتوري قسنطينة, 2020 . - 121 f. ; 30 cm.
1 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
PhysiqueTags : physique: Physique Energétique Distillation distillateur solaire à mèche irradiation solaire modèle de Sivkov modèle linéaire wick solar till solar radiation Sivkov model linear model التقطير المقطر الشمسي بالقماش الإشعاع الشمسي نموذج سيفكوف النموذج الخطي Index. décimale : 530 Physique Résumé :
A new design of the basin-type solar still with the objective of increasing productivity is proposed. The idea is to use a rotating vertical black wick (VRW) in front of the distiller back wall that will act as an additional absorption and evaporation zone. The combination of the capillary action of the wick and the rotary action within the distiller significantly improves the productivity and thermal efficiency of the conventional solar distiller. A series of experimental tests was carried out at the meteorological station of M'sila to evaluate the contribution of this rotating wick to the improvement of the distiller's
performance. The comparison with the simple solar distiller shows that production of the modified distiller has been increased by about 14.7% in summer and 51.1% in winter. In addition, the economic study shows that the estimated cost of the distilled water is approximately 0.011 $/kg and the payback of the proposed solar distiller is estimated at 78 days. Due to the lack of data on solar irradiation, and the need for this parameter to simulate their effect on the performance of solar systems, interest has been brought to the study of two types of estimation models of global solar irradiation existing in the literature. For the first type, which is based on the duration of sunshine, the linear, quadratic and cubic models were used
to estimate global solar irradiation for the Ksar Challala site (latitude 35.10N). The results show that the linear model has the smallest errors by contribution to the other two and can thus be retained for the site of Ksar Challala. For the second type, which is based on sunshine duration and sun height, the Sivkov model
was used for three sites in Algeria, Constantine, Dar El-Beida and Ksar Challala, of respective latitudes 36.17N, 36.41N and 35.10N. The results show that this one is well adapted to estimate the monthly average global solar irradiation for the north of Algeria with a good degree of precision.
Diplôme : Doctorat en sciences En ligne : ../theses/physique/HAD7689.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=11523 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité HAD/7689 HAD/7689 Thèse Bibliothèque principale Thèses Disponible
Titre : Efficacite photocatalytique des oxydes de fer (hematite) et des acides carboxyliques sur la degradation de derives phenoliques chlores en solution aqueuse Type de document : texte imprimé Auteurs : Wassila Remache, Auteur ; Tahar Sehili, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2018 Importance : 168 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ChimieTags : 2,4-dichlorophénol Photo-Fenton hétérogène Oxyde de fer naturel Fe(III) – carboxylate Acide oxalique Irradiation solaire Solution aqueuse Heterogeneous photo-Fenton Natural iron oxide Oxalic acid Solar radiation ثنائي الكلوروفینول أكسید الحدید الطبیعي الحدید ) -(IIIأكسالات حمض الأكسالیك الإشعاع
الشمسىIndex. décimale : 540 Chimie et sciences connexes Résumé : The degradation of 2,4-DCP photoinduced by natural iron oxide was studied in aqueous suspension up on irradiation at 365 nm and by solar light. The effects of various factors, such as photolysis, adsorption, effect of pH, temperature, wavelength and the degradation pathways were investigated.
The UV light has no considerable influence on the catalytic activity of the NIO, it is very important to note that there is a strong overlap between the absorption spectrum of NIO and the solar emission spectrum of the sun leading the capacity of this oxide to photoinduce the degradation of 2,4-DCP under solar light. 2,4-DCP was nearly completely removed in about 6 h.
The second part of the work of this thesis has demonstrated the significant impact that could have sunlight on the activation of iron-carboxylate complexes in the degradation of 2,4-DCP.
The complex iron-oxalate was found the most photocative for the degradation of 2,4-DCP in both systems (UV and solar irradiation). Photochemical behavior of iron released into solution, mostly influenced by pH, will monitor the effectiveness of the reaction disappearance of the pollutant.
Our results showed that photocatalysis in the iron-oxalate system is an effective technique for the degradation of 2,4-DCP where seven major by-products were identified and that this degradation mainly through hydroxyle radicals •OH. Mineralization of 2,4-DCP was achieved in 11h in our experimental conditions.
Furthermore, in the heterogeneous iron oxide /H2O2 system the method is effective only at acidic conditions and the disappearance of 2,4-DCP is strongly dependent on the concentration of H2O2 , substrate and catalyst dose. The photodegradation of 2,4-DCP can be directly attributed to the attack of •OH radicals. 2,4-DCP is totally degraded that after formation of various by-products can be completely mineralized to H2O, Cl- et CO2.
Our work shows that the activation of natural iron oxide by carboxylic acids and hydrogen peroxide could have a considerable impact on the fate of organic pollutants in aquatic environment.
Diplôme : Doctorat en sciences En ligne : ../theses/chimie/REM7256.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10854 Efficacite photocatalytique des oxydes de fer (hematite) et des acides carboxyliques sur la degradation de derives phenoliques chlores en solution aqueuse [texte imprimé] / Wassila Remache, Auteur ; Tahar Sehili, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2018 . - 168 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ChimieTags : 2,4-dichlorophénol Photo-Fenton hétérogène Oxyde de fer naturel Fe(III) – carboxylate Acide oxalique Irradiation solaire Solution aqueuse Heterogeneous photo-Fenton Natural iron oxide Oxalic acid Solar radiation ثنائي الكلوروفینول أكسید الحدید الطبیعي الحدید ) -(IIIأكسالات حمض الأكسالیك الإشعاع
الشمسىIndex. décimale : 540 Chimie et sciences connexes Résumé : The degradation of 2,4-DCP photoinduced by natural iron oxide was studied in aqueous suspension up on irradiation at 365 nm and by solar light. The effects of various factors, such as photolysis, adsorption, effect of pH, temperature, wavelength and the degradation pathways were investigated.
The UV light has no considerable influence on the catalytic activity of the NIO, it is very important to note that there is a strong overlap between the absorption spectrum of NIO and the solar emission spectrum of the sun leading the capacity of this oxide to photoinduce the degradation of 2,4-DCP under solar light. 2,4-DCP was nearly completely removed in about 6 h.
The second part of the work of this thesis has demonstrated the significant impact that could have sunlight on the activation of iron-carboxylate complexes in the degradation of 2,4-DCP.
The complex iron-oxalate was found the most photocative for the degradation of 2,4-DCP in both systems (UV and solar irradiation). Photochemical behavior of iron released into solution, mostly influenced by pH, will monitor the effectiveness of the reaction disappearance of the pollutant.
Our results showed that photocatalysis in the iron-oxalate system is an effective technique for the degradation of 2,4-DCP where seven major by-products were identified and that this degradation mainly through hydroxyle radicals •OH. Mineralization of 2,4-DCP was achieved in 11h in our experimental conditions.
Furthermore, in the heterogeneous iron oxide /H2O2 system the method is effective only at acidic conditions and the disappearance of 2,4-DCP is strongly dependent on the concentration of H2O2 , substrate and catalyst dose. The photodegradation of 2,4-DCP can be directly attributed to the attack of •OH radicals. 2,4-DCP is totally degraded that after formation of various by-products can be completely mineralized to H2O, Cl- et CO2.
Our work shows that the activation of natural iron oxide by carboxylic acids and hydrogen peroxide could have a considerable impact on the fate of organic pollutants in aquatic environment.
Diplôme : Doctorat en sciences En ligne : ../theses/chimie/REM7256.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10854 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité REM/7256 REM/7256 Thèse Bibliothèque principale Thèses Disponible
Titre : Etude du champ solaire d’une centrale thermique hybride de production d’electricite. Type de document : texte imprimé Auteurs : Adel Miles, Auteur ; O. Khemis, Directeur de thèse ; Abderrezak Merabet, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2017 Importance : 145 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
Génie MécaniqueTags : solaire thermodynamique, concentration, Cylindro-parabolique Centrale Optimisation Performance Rayonnement solaire Simulation solar thermodynamics, concentration, Parabolic trough Power station Optimization Solar radiation الطاقة الشمسیة الحراریة وتركیز لاقط مقعر ذو القطع المكافئ المركزیة الأمثل الأداء الأشعة
الشمسیة المحاكاةIndex. décimale : 620 Génie Mécanique Résumé : The work presented in this thesis is a contribution to the study of the production of
electricity by a hybrid thermal power plant exploiting the solar field on the one hand and
natural gas on the other hand. This work concerns firstly the evaluation of the thermodynamic performances of a solargas hybrid thermal power system with a power of 150 MW, the method of energy analysis was used in this thesis. This method is used to determine the main parameters in order to achieve improvements in system performance. The development of the analysis model in this thesis is carried out by determining the thermal and solar efficiency as well as the efficiency of solar electricity. Due to the calculation of the thermal and solar performances in typical days and an average of the days of the year, we used simulation software "Aspen Plus" to determine the thermodynamic parameters of the hybrid plant in the case of Algerian weather conditions. As well as the System Advisor Model (SAM), this gives a methodology and
information particularly on cylindro-parabolic shapes concerning the part of the solar field in the system studied. The results are calculated hour by hour from sunrise to sunset. The second part of this work is being improved in the overall efficiency of the plant with two levels of pressure that directly affects the capacity of the steam turbine in the power block. In the third part, an optimization of the power at the level of the steam turbine is also carried out. The optimization was carried out in the power block which contains two gas turbines and a double pressure steam cycle where the high pressure part is only heated. Preliminary simulations for this system have shown that the steam turbine cycle can achieve optimum conditions for reheating and low vapor pressure, which would enhance the performance of the system. The fourth part concerns the comparison of the key parameters of the thermal power plant in different sites based on the economic factor (LCOE), the configuration of the solar field section and the line spacing or the so-called effect of shading. The exploitation of the "Aspen plus" and "SAM" software enabled us to establish models of optimal hybrid power plants (solar-gas) in the arid zone of Algeria. Such a study is a reference for the construction and site selection of the installation of this type of power plant.Diplôme : Doctorat en sciences En ligne : ../theses/gmecanique/MIL7126.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10476 Etude du champ solaire d’une centrale thermique hybride de production d’electricite. [texte imprimé] / Adel Miles, Auteur ; O. Khemis, Directeur de thèse ; Abderrezak Merabet, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2017 . - 145 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Génie MécaniqueTags : solaire thermodynamique, concentration, Cylindro-parabolique Centrale Optimisation Performance Rayonnement solaire Simulation solar thermodynamics, concentration, Parabolic trough Power station Optimization Solar radiation الطاقة الشمسیة الحراریة وتركیز لاقط مقعر ذو القطع المكافئ المركزیة الأمثل الأداء الأشعة
الشمسیة المحاكاةIndex. décimale : 620 Génie Mécanique Résumé : The work presented in this thesis is a contribution to the study of the production of
electricity by a hybrid thermal power plant exploiting the solar field on the one hand and
natural gas on the other hand. This work concerns firstly the evaluation of the thermodynamic performances of a solargas hybrid thermal power system with a power of 150 MW, the method of energy analysis was used in this thesis. This method is used to determine the main parameters in order to achieve improvements in system performance. The development of the analysis model in this thesis is carried out by determining the thermal and solar efficiency as well as the efficiency of solar electricity. Due to the calculation of the thermal and solar performances in typical days and an average of the days of the year, we used simulation software "Aspen Plus" to determine the thermodynamic parameters of the hybrid plant in the case of Algerian weather conditions. As well as the System Advisor Model (SAM), this gives a methodology and
information particularly on cylindro-parabolic shapes concerning the part of the solar field in the system studied. The results are calculated hour by hour from sunrise to sunset. The second part of this work is being improved in the overall efficiency of the plant with two levels of pressure that directly affects the capacity of the steam turbine in the power block. In the third part, an optimization of the power at the level of the steam turbine is also carried out. The optimization was carried out in the power block which contains two gas turbines and a double pressure steam cycle where the high pressure part is only heated. Preliminary simulations for this system have shown that the steam turbine cycle can achieve optimum conditions for reheating and low vapor pressure, which would enhance the performance of the system. The fourth part concerns the comparison of the key parameters of the thermal power plant in different sites based on the economic factor (LCOE), the configuration of the solar field section and the line spacing or the so-called effect of shading. The exploitation of the "Aspen plus" and "SAM" software enabled us to establish models of optimal hybrid power plants (solar-gas) in the arid zone of Algeria. Such a study is a reference for the construction and site selection of the installation of this type of power plant.Diplôme : Doctorat en sciences En ligne : ../theses/gmecanique/MIL7126.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10476 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité MIL/7126 MIL/7126 Thèse Bibliothèque principale Thèses Disponible
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