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Auteur Rabah Gomri |
Documents disponibles écrits par cet auteur (7)



Titre : Etude, analyse et simulation du reforming primaire (Four de l'industrie d'Ammoniac) Auteurs : Rabah Gomri ; Univ. de Constantine, Éditeur scientifique ; M.S. Rouabah, Directeur de thèse Année de publication : 2006 Importance : 224 f. Note générale : 01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD Langues : Français (fre) Catégories : Français - Anglais
Génie ClimatiqueTags : Simulation Reforming primaire Four Industrie Ammoniac Index. décimale : 626 Génie Climatique En ligne : ../theses/gclim/GOM4513.pdf Permalink : index.php?lvl=notice_display&id=53 Etude, analyse et simulation du reforming primaire (Four de l'industrie d'Ammoniac) [] / Rabah Gomri ; Univ. de Constantine, Éditeur scientifique ; M.S. Rouabah, Directeur de thèse . - 2006 . - 224 f.
01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD
Langues : Français (fre)
Catégories : Français - Anglais
Génie ClimatiqueTags : Simulation Reforming primaire Four Industrie Ammoniac Index. décimale : 626 Génie Climatique En ligne : ../theses/gclim/GOM4513.pdf Permalink : index.php?lvl=notice_display&id=53 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité GOM/4513 GOM/4513 Thèse Bibliothèque principale Thèses Disponible Etude et analyse d’un système de production de froid par énergie solaire pour la climatisation / Billel Mebarki
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Titre : Etude et analyse d’un système de production de froid par énergie solaire pour la climatisation Type de document : texte imprimé Auteurs : Billel Mebarki, Auteur ; Rabah Gomri, Directeur de thèse Editeur : constantine [Algérie] : Université Constantine 1 Année de publication : 2014 Importance : 97 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles Langues : Français (fre) Catégories : Français - Anglais
Génie ClimatiqueTags : Adsorption couple adsorbent / adsorbate solar collector mass recovery Adsorption couple adsorbant/adsorbat capteur solaire récupération de masse الامتزاز زوج المكثف / الكثف مجمع الطاقة الشمسیة استرجاع الكتلة Index. décimale : 626 Génie Climatique Résumé : The aim of this work is the study and analysis of an adsorption air conditioning machine driven by solar energy.
We defined the adsorption and desorption phenomena, the adsorbent, the adsorbate and the basic cycle of adsorption refrigeration machine firstly. Secondly, I have mentioned the criteria for selecting the couple adsorbent/ adsorbate, three celebrate
couple and different theories modeling adsorption phenomenon.
The study of the functioning of adsorption refrigeration machine is addressed by classical thermodynamic analysis of energy balances of the four phases of the cycle.
We used the equation of thermodynamic equilibrium which is based on the theory of Dubinin Radushkevich. In order to compare between the three couples most used and the study of the influence of some parameters on the performance of the refrigerating machine.
Because the machine is powered by solar energy, so it is necessary to know the hourly solar radiation received by the surface of the solar collector inclined. Therefore, we have developed a computer code to predict solar radiation at every hour of the day.
Modeling of solar collector was achieved through an analogy made between the electrical system and thermal system. We have developed a computer code to simulate the operation of the solar collector during four type days of months May, June, July and August.
Simulations of the two chiller water adsorption by solar energy, one with one element of sorption, the other with two elements of sorption were realized firstly. On the other hand, we have added the mass recovery process to the chiller of two elements of sorption to investigate the influence of mass recovery on the performance of adsorption chiller water by energy generation solarDiplôme : Magistère En ligne : ../theses/gclim/MEB6446.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=9481 Etude et analyse d’un système de production de froid par énergie solaire pour la climatisation [texte imprimé] / Billel Mebarki, Auteur ; Rabah Gomri, Directeur de thèse . - constantine [Algérie] : Université Constantine 1, 2014 . - 97 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Génie ClimatiqueTags : Adsorption couple adsorbent / adsorbate solar collector mass recovery Adsorption couple adsorbant/adsorbat capteur solaire récupération de masse الامتزاز زوج المكثف / الكثف مجمع الطاقة الشمسیة استرجاع الكتلة Index. décimale : 626 Génie Climatique Résumé : The aim of this work is the study and analysis of an adsorption air conditioning machine driven by solar energy.
We defined the adsorption and desorption phenomena, the adsorbent, the adsorbate and the basic cycle of adsorption refrigeration machine firstly. Secondly, I have mentioned the criteria for selecting the couple adsorbent/ adsorbate, three celebrate
couple and different theories modeling adsorption phenomenon.
The study of the functioning of adsorption refrigeration machine is addressed by classical thermodynamic analysis of energy balances of the four phases of the cycle.
We used the equation of thermodynamic equilibrium which is based on the theory of Dubinin Radushkevich. In order to compare between the three couples most used and the study of the influence of some parameters on the performance of the refrigerating machine.
Because the machine is powered by solar energy, so it is necessary to know the hourly solar radiation received by the surface of the solar collector inclined. Therefore, we have developed a computer code to predict solar radiation at every hour of the day.
Modeling of solar collector was achieved through an analogy made between the electrical system and thermal system. We have developed a computer code to simulate the operation of the solar collector during four type days of months May, June, July and August.
Simulations of the two chiller water adsorption by solar energy, one with one element of sorption, the other with two elements of sorption were realized firstly. On the other hand, we have added the mass recovery process to the chiller of two elements of sorption to investigate the influence of mass recovery on the performance of adsorption chiller water by energy generation solarDiplôme : Magistère En ligne : ../theses/gclim/MEB6446.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=9481 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité MEB/6446 MEB/6446 Thèse Bibliothèque principale Thèses Disponible Documents numériques
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texte intégraleAdobe Acrobat PDFEtude des transferts de chaleur et de masse dans une machine frigorifique à adsorption solaire / Billel Mebarki
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Titre : Etude des transferts de chaleur et de masse dans une machine frigorifique à adsorption solaire Type de document : texte imprimé Auteurs : Billel Mebarki, Auteur ; Rabah Gomri, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2017 Importance : 138 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
Génie ClimatiqueTags : Adsorption Froid Gel de silice/eau Force motrice linéaire (LDF) Modélisation COP Cooling Silica gel/water Linear driving Force Model (LDF) امتزاز تبريد جال السيليس الماء Index. décimale : 626 Génie Climatique Résumé : The aim of this thesis is to study the influence of the constructive parameters of an adsorption bed on the performance of a two-bed adsorption chiller and on the temperature distribution of the adsorbent, the rate of the adsorbate and the pressure in the adsorption bed.
In the context of the choice of the adsorbent-adsorbate couple, a very important step in optimizing the performance of an adsorption refrigeration machine, a static model of an adsorption cooling machine was developed. A FORTRAN computation code corresponding to this model has been established allowing the best choice of the adsorbent-adsorbate couple.
The performance of two adsorbent bed silica gel-water adsorption chiller and the influences of its adsorbent bed dimensions, the velocity of heat exchange fluid and the adsorbent particle diameter on the transient distributions of the solid phase temperature, adsorbate concentration and the pressure are numerically examined in this study.
A transient two-dimensional local thermal non-equilibrium model that takes into account both internal and external mass transfer resistances is developed to simulate the adsorption chiller considered herein. The internal and external mass transfers are predicted by the linear driving force (LDF) model and Darcy’s equation, respectively.
The results of our simulations provide useful guidelines for the design of this type of adsorption chillers.
Diplôme : Doctorat en sciences En ligne : ../theses/gclim/MEB7004.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10384 Etude des transferts de chaleur et de masse dans une machine frigorifique à adsorption solaire [texte imprimé] / Billel Mebarki, Auteur ; Rabah Gomri, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2017 . - 138 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Génie ClimatiqueTags : Adsorption Froid Gel de silice/eau Force motrice linéaire (LDF) Modélisation COP Cooling Silica gel/water Linear driving Force Model (LDF) امتزاز تبريد جال السيليس الماء Index. décimale : 626 Génie Climatique Résumé : The aim of this thesis is to study the influence of the constructive parameters of an adsorption bed on the performance of a two-bed adsorption chiller and on the temperature distribution of the adsorbent, the rate of the adsorbate and the pressure in the adsorption bed.
In the context of the choice of the adsorbent-adsorbate couple, a very important step in optimizing the performance of an adsorption refrigeration machine, a static model of an adsorption cooling machine was developed. A FORTRAN computation code corresponding to this model has been established allowing the best choice of the adsorbent-adsorbate couple.
The performance of two adsorbent bed silica gel-water adsorption chiller and the influences of its adsorbent bed dimensions, the velocity of heat exchange fluid and the adsorbent particle diameter on the transient distributions of the solid phase temperature, adsorbate concentration and the pressure are numerically examined in this study.
A transient two-dimensional local thermal non-equilibrium model that takes into account both internal and external mass transfer resistances is developed to simulate the adsorption chiller considered herein. The internal and external mass transfers are predicted by the linear driving force (LDF) model and Darcy’s equation, respectively.
The results of our simulations provide useful guidelines for the design of this type of adsorption chillers.
Diplôme : Doctorat en sciences En ligne : ../theses/gclim/MEB7004.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10384 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité MEB/7004 MEB/7004 Thèse Bibliothèque principale Thèses Disponible Intégration des énergies renouvelables pour le chauffage et la climatisation des bâtiments en utilisant les pompes à chaleur. / Mohamed Salah Saadi
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Titre : Intégration des énergies renouvelables pour le chauffage et la climatisation des bâtiments en utilisant les pompes à chaleur. Type de document : texte imprimé Auteurs : Mohamed Salah Saadi, Auteur ; Rabah Gomri, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2018 Importance : 124 f. Format : 30 cm. Note générale : Doctorat 3éme CYCLE LMD.
1 copie imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
Génie ClimatiqueTags : Génie Climatique:Réfrigération et Climatisation, Energie et Environnement Méthode des volumes finis changement de phase pompes à chaleur géothermiques echangeur de chaleur coaxial optimisation Finite volume method phase change ground coupled heat pump coaxial heat exchanger optimization طريقة الحجوم المحدودة تغير الحالة مضخة حرارية أرضية مبادل حراري محوري تحسين Index. décimale : 626 Génie Climatique Résumé :
To exploit shallow geothermal energy or the very low temperature geothermal energy, coupling ground source heat pump system (GSHPS) with borehole heat exchangers (BHE) represents the best tool. In many previous studies, only a single or few factors that influence the sustainability and efficiency of a GSHPS were investigated, in the present paper a numerical 2D axissymmetric transient model has been built using the finite volume method then implanted in MATLAB, which is suitable to predict transient temperature distributions of the heat carrier fluid and the surrounding soil over the well depth for a borehole field (accounting for thermal interferences), it’s been compared against two analytical solutions and the numerical code
COMSOL where the results have been found identical. In this thesis, the first part of the results tends to an inducement and this is to better clarify the occurrence of heat transfer and thermal interferences in the sub-ground; the second part of the results treats the impact of different physical processes in the surrounding soil, this is to get closer to the real case and so ensure a more precise design; the impacts that have been studied are: axial effects, porosity, undergroundwater flow and phase change in the soil, a coaxial borehole heat exchanger has been selected regarding to its better performances. In the third part of the results, a performance and optimization study has been carried out with different borehole inner and outer diameters and the inlet fluid temperature. The model parameters are based on local conditions of Constantine area. The results show, for the impact study in the surrounding ground, that porous grounds are more
suitable for these systems, when porosity is 0% the thermal load decreases by 15.725% than the case where porosity is 45%; also, it’s been found that after occurrence of phase change in the saturated sub-ground, effective thermal properties changes in a way to make the withdrawn thermal load decreases in a more intense manner, it reduces by 5.36% than the case where the process isn’t accounted for and this is during the last 843 h (35 days) since the process start; the
last part of the impact study yields that the underground-water flow is favoured for the system performance. The optimization part resulted that the increase in diameters causes an increase in the COP, but starting from a certain threshold, this increase in diameters becomes useless where it yields a negligible increase of the COP value and only causes an increase in the investment cost uselessly, also, it’s been found that the inlet temperature, in order to keep the COP as higher
as possible, decreases linearly function to the decrease in the BHE wall temperature, in order to implement this concept in the practice and follow the dependency of the inlet temperature to the BHE wall temperature, a 3-way valve has been conceived and suggested, this valve is responsible for regulating the inlet temperature by regulating the mixture of the fluid directly exiting the evaporator and the one directly exiting the well. The fourth and the last part of the
results has been carried out as a case study and this is to show the applicability of these systems.Diplôme : Doctorat En ligne : ../theses/gclim/SAA7447.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11233 Intégration des énergies renouvelables pour le chauffage et la climatisation des bâtiments en utilisant les pompes à chaleur. [texte imprimé] / Mohamed Salah Saadi, Auteur ; Rabah Gomri, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2018 . - 124 f. ; 30 cm.
Doctorat 3éme CYCLE LMD.
1 copie imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Génie ClimatiqueTags : Génie Climatique:Réfrigération et Climatisation, Energie et Environnement Méthode des volumes finis changement de phase pompes à chaleur géothermiques echangeur de chaleur coaxial optimisation Finite volume method phase change ground coupled heat pump coaxial heat exchanger optimization طريقة الحجوم المحدودة تغير الحالة مضخة حرارية أرضية مبادل حراري محوري تحسين Index. décimale : 626 Génie Climatique Résumé :
To exploit shallow geothermal energy or the very low temperature geothermal energy, coupling ground source heat pump system (GSHPS) with borehole heat exchangers (BHE) represents the best tool. In many previous studies, only a single or few factors that influence the sustainability and efficiency of a GSHPS were investigated, in the present paper a numerical 2D axissymmetric transient model has been built using the finite volume method then implanted in MATLAB, which is suitable to predict transient temperature distributions of the heat carrier fluid and the surrounding soil over the well depth for a borehole field (accounting for thermal interferences), it’s been compared against two analytical solutions and the numerical code
COMSOL where the results have been found identical. In this thesis, the first part of the results tends to an inducement and this is to better clarify the occurrence of heat transfer and thermal interferences in the sub-ground; the second part of the results treats the impact of different physical processes in the surrounding soil, this is to get closer to the real case and so ensure a more precise design; the impacts that have been studied are: axial effects, porosity, undergroundwater flow and phase change in the soil, a coaxial borehole heat exchanger has been selected regarding to its better performances. In the third part of the results, a performance and optimization study has been carried out with different borehole inner and outer diameters and the inlet fluid temperature. The model parameters are based on local conditions of Constantine area. The results show, for the impact study in the surrounding ground, that porous grounds are more
suitable for these systems, when porosity is 0% the thermal load decreases by 15.725% than the case where porosity is 45%; also, it’s been found that after occurrence of phase change in the saturated sub-ground, effective thermal properties changes in a way to make the withdrawn thermal load decreases in a more intense manner, it reduces by 5.36% than the case where the process isn’t accounted for and this is during the last 843 h (35 days) since the process start; the
last part of the impact study yields that the underground-water flow is favoured for the system performance. The optimization part resulted that the increase in diameters causes an increase in the COP, but starting from a certain threshold, this increase in diameters becomes useless where it yields a negligible increase of the COP value and only causes an increase in the investment cost uselessly, also, it’s been found that the inlet temperature, in order to keep the COP as higher
as possible, decreases linearly function to the decrease in the BHE wall temperature, in order to implement this concept in the practice and follow the dependency of the inlet temperature to the BHE wall temperature, a 3-way valve has been conceived and suggested, this valve is responsible for regulating the inlet temperature by regulating the mixture of the fluid directly exiting the evaporator and the one directly exiting the well. The fourth and the last part of the
results has been carried out as a case study and this is to show the applicability of these systems.Diplôme : Doctorat En ligne : ../theses/gclim/SAA7447.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11233 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité SAA/7447 SAA/7447 Thèse Bibliothèque principale Thèses Disponible Performances des systèmes frigorifiques trans-critiques utilisant le CO2 comme fluide frigorigène / Nabil Khellaf
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Titre : Performances des systèmes frigorifiques trans-critiques utilisant le CO2 comme fluide frigorigène Type de document : texte imprimé Auteurs : Nabil Khellaf, Auteur ; Rabah Gomri, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2017 Importance : 161 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
Génie ClimatiqueTags : Réfrigération Cycles Trans-critiques Dioxyde de Carbone Transfert de Chaleur Évaporation Simulation Optimisation Performance Refrigeration transcritical cycles Carbon Dioxide Heat Transfer Evaporation Optimization التبريد دورات عبر حرجة ثاني أكسيد الكربون انتقال الحرارة التبخر محاكاة التحسين الأداء Index. décimale : 626 Génie Climatique Résumé : The negative impact of synthetic fluids on the environment has led researchers to
natural refrigerants, although these fluids are not harmful on the environment, some of them are dangerous because of their flammability and toxicity. Therefore, carbon dioxide goes into very good position among the other natural fluids. The thermodynamic properties of CO2 require a trans-critical cycle. Unfortunately, this cycle has low performance compared to conventional cycles. The main objective of this work is to improve the performance of the refrigeration systems using CO2 as refrigerant and study the heat transfer of carbon dioxide in evaporation.
Based on the first law of thermodynamics and the optimization analysis several trans-critical cycles were studied, in addition, new proposed cycles have been proposed and studied.
As regards the study of heat transfer during evaporation of CO2, literature review has shown that there are several correlations used to predict the coefficient of heat transfer. In order to evaluate these correlations and select the best correlation allowing the optimal design of evaporator, which ensures the required cooling capacity, an experimental database was extracted from different papers available in the literature and compared with these correlations.
Diplôme : Doctorat En ligne : ../theses/gclim/KHE6996.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10398 Performances des systèmes frigorifiques trans-critiques utilisant le CO2 comme fluide frigorigène [texte imprimé] / Nabil Khellaf, Auteur ; Rabah Gomri, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2017 . - 161 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Génie ClimatiqueTags : Réfrigération Cycles Trans-critiques Dioxyde de Carbone Transfert de Chaleur Évaporation Simulation Optimisation Performance Refrigeration transcritical cycles Carbon Dioxide Heat Transfer Evaporation Optimization التبريد دورات عبر حرجة ثاني أكسيد الكربون انتقال الحرارة التبخر محاكاة التحسين الأداء Index. décimale : 626 Génie Climatique Résumé : The negative impact of synthetic fluids on the environment has led researchers to
natural refrigerants, although these fluids are not harmful on the environment, some of them are dangerous because of their flammability and toxicity. Therefore, carbon dioxide goes into very good position among the other natural fluids. The thermodynamic properties of CO2 require a trans-critical cycle. Unfortunately, this cycle has low performance compared to conventional cycles. The main objective of this work is to improve the performance of the refrigeration systems using CO2 as refrigerant and study the heat transfer of carbon dioxide in evaporation.
Based on the first law of thermodynamics and the optimization analysis several trans-critical cycles were studied, in addition, new proposed cycles have been proposed and studied.
As regards the study of heat transfer during evaporation of CO2, literature review has shown that there are several correlations used to predict the coefficient of heat transfer. In order to evaluate these correlations and select the best correlation allowing the optimal design of evaporator, which ensures the required cooling capacity, an experimental database was extracted from different papers available in the literature and compared with these correlations.
Diplôme : Doctorat En ligne : ../theses/gclim/KHE6996.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10398 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité KHE/6996 KHE/6996 Thèse Bibliothèque principale Thèses Disponible Thermodynamique et modélisation biphasique de la production de l’hydrogène par énergie solaire. / Belkacem Nezzari
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PermalinkTransferts simultanés de chaleur et de masse dans un absorbeur d'une machine frigorifique à absorption. / Rabah Gomri
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