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Partager le résultat de cette recherche Interroger des sources externesEtude et analyse paramétrique des échangeurs de chaleur dans une machine tritherme- Cas du condensateur / Sofiane Tourèche
Titre : Etude et analyse paramétrique des échangeurs de chaleur dans une machine tritherme- Cas du condensateur Auteurs : Sofiane Tourèche ; Université Mentouri, Editeur scientifique ; Y. Khetib, Directeur de thèse Année de publication : 2008 Importance : 126 f. Note générale : 01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD Langues : Français (fre) Tags : Echangeur de chaleur Machine tritherme Condensateur Index. décimale : 626 Génie Climatique En ligne : ../theses/gclim/TOU5144.pdf Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=57 Etude et analyse paramétrique des échangeurs de chaleur dans une machine tritherme- Cas du condensateur [] / Sofiane Tourèche ; Université Mentouri, Editeur scientifique ; Y. Khetib, Directeur de thèse . - 2008 . - 126 f.
01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD
Langues : Français (fre)
Tags : Echangeur de chaleur Machine tritherme Condensateur Index. décimale : 626 Génie Climatique En ligne : ../theses/gclim/TOU5144.pdf Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=57 Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire Elaboration d'un logiciel de calcul pour le dimensionnement des échangeurs de chaleur frigorifiques / Nasrine Bensalem
Titre : Elaboration d'un logiciel de calcul pour le dimensionnement des échangeurs de chaleur frigorifiques Type de document : texte imprimé Auteurs : Nasrine Bensalem ; M. Boumaza, Directeur de thèse ; Université Mentouri, Editeur scientifique Année de publication : 2002 Importance : 131 f. Note générale : 01 Disponible à la salle de recherche
02 Disponibles au magasin de la bibliothèque centraleLangues : Français (fre) Tags : Echangeur de chaleur Circuit frigorifique fluide frigorigène Evaporateur Condenseur Sous refroidisseur Index. décimale : 530 Physique Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=2961 Elaboration d'un logiciel de calcul pour le dimensionnement des échangeurs de chaleur frigorifiques [texte imprimé] / Nasrine Bensalem ; M. Boumaza, Directeur de thèse ; Université Mentouri, Editeur scientifique . - 2002 . - 131 f.
01 Disponible à la salle de recherche
02 Disponibles au magasin de la bibliothèque centrale
Langues : Français (fre)
Tags : Echangeur de chaleur Circuit frigorifique fluide frigorigène Evaporateur Condenseur Sous refroidisseur Index. décimale : 530 Physique Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=2961 Exemplaires
Code-barres Cote Support Localisation Section Disponibilité aucun exemplaire
Titre : Etude et optimisation des échanges de chaleur Type de document : texte imprimé Auteurs : Nada Benayad ; Université Mentouri, Editeur scientifique ; N. Bellel, Directeur de thèse Année de publication : 2008 Importance : 127 f. Note générale : 01 Disponible à la salle de recherche 02 Disponibles aubmagazin de la B.U.C. 01 CD Langues : Français (fre) Tags : Echangeur de chaleur température Fluide Débit Flux de chaleur DTLM NUT Index. décimale : 530 Physique En ligne : ../theses/physique/BEN5230.pdf Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=3473 Etude et optimisation des échanges de chaleur [texte imprimé] / Nada Benayad ; Université Mentouri, Editeur scientifique ; N. Bellel, Directeur de thèse . - 2008 . - 127 f.
01 Disponible à la salle de recherche 02 Disponibles aubmagazin de la B.U.C. 01 CD
Langues : Français (fre)
Tags : Echangeur de chaleur température Fluide Débit Flux de chaleur DTLM NUT Index. décimale : 530 Physique En ligne : ../theses/physique/BEN5230.pdf Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=3473 Exemplaires
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Titre : Modélisation d'un ballon de stockage thermique Type de document : texte imprimé Auteurs : Hamza Bouchetiba, Auteur ; Abla Chaker, Directeur de thèse Editeur : constantine [Algérie] : Université Constantine 1 Année de publication : 2014 Importance : 128 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Tags : chauffe eau solaire capteur solaire ballon de stockage installation solaire stratification échangeur de chaleur solar water heating solar collector Storage tank solar installation heat exchanger ???? ?????? ??????? ??????? ????? ?????? ??????? ????? ???? ?????? ??????? ??????????????? ????? ????? Index. décimale : 530 Physique Résumé : The stratification in a Storage tank is the key for the good functioning of all installation aiming at meeting thermal needs (production of sanitary hot water, home heating).
The work undertaken in this dissertation focuses on the modeling of a storage tank in order to understand better the thermal behavior of the latter one. The impact of many parameters (water injection debit, the nature and the thickness of the insulation, usage of a heat exchanger or an electrical booster) on the temporal evolution of the temperature (in case of charge and of discharge) in the tank was examined.
The modeling of the stratification is undertaken by subdividing the tank into N (20) layers. An energy and a masse balance is drawn up in every node. The system of the global equations is resolved by the Crank-Nicolson method.
The results obtained show clearly that the last layer heats faster, especially as the injection debit is elevated and the tank homogenization time becomes shorter.
Besides, it appears that a good isolation allows to minimize the losses, and to avoid the creation of convective current, which could degrade the stratification.
The comparison of the numerical results obtained in this work with those of the literature shows a good agreement.Diplôme : Magistère En ligne : ../theses/physique/BOU6632.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=9757 Modélisation d'un ballon de stockage thermique [texte imprimé] / Hamza Bouchetiba, Auteur ; Abla Chaker, Directeur de thèse . - constantine (Route ain el bey, Algérie) : Université Constantine 1, 2014 . - 128 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Tags : chauffe eau solaire capteur solaire ballon de stockage installation solaire stratification échangeur de chaleur solar water heating solar collector Storage tank solar installation heat exchanger ???? ?????? ??????? ??????? ????? ?????? ??????? ????? ???? ?????? ??????? ??????????????? ????? ????? Index. décimale : 530 Physique Résumé : The stratification in a Storage tank is the key for the good functioning of all installation aiming at meeting thermal needs (production of sanitary hot water, home heating).
The work undertaken in this dissertation focuses on the modeling of a storage tank in order to understand better the thermal behavior of the latter one. The impact of many parameters (water injection debit, the nature and the thickness of the insulation, usage of a heat exchanger or an electrical booster) on the temporal evolution of the temperature (in case of charge and of discharge) in the tank was examined.
The modeling of the stratification is undertaken by subdividing the tank into N (20) layers. An energy and a masse balance is drawn up in every node. The system of the global equations is resolved by the Crank-Nicolson method.
The results obtained show clearly that the last layer heats faster, especially as the injection debit is elevated and the tank homogenization time becomes shorter.
Besides, it appears that a good isolation allows to minimize the losses, and to avoid the creation of convective current, which could degrade the stratification.
The comparison of the numerical results obtained in this work with those of the literature shows a good agreement.Diplôme : Magistère En ligne : ../theses/physique/BOU6632.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=9757 Exemplaires
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Titre : Etude paramétrique des échanges convectifs turbulents dans les configurations d’intérêt pratique Type de document : texte imprimé Auteurs : Ridha Mebrouk, Auteur ; Abderrahim Boudenne, Directeur de thèse ; Yassine Kabar, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2017 Importance : 139 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Tags : Convection turbulente Simulation numérique Nanofluide Enceinte chauffée par le bas,
Convection forcée Echanges turbulents Echangeur de chaleur Transfert thermique conjugué Turbulent convection Numerical simulation Nanofluid Enclosure heated from below Forced
convection Turbulent exchanges Heat exchanger Conjugate heat transfer ????? ???????? ???????? ???????? ????????? ??????? ????? ?? ??????? ????? ??????? ??????? ???????? ?????????
???????????? ??????? ?????????Index. décimale : 620 Génie Mécanique Résumé : This thesis presents the results of two studies: the first concerns natural turbulent convection in a
rectangular cavity heated from the bottom wall and filled with a nanofluid and the second relates to the
investigation of conjugate heat transfer in a fin-and-tube heat exchanger.
The cavity of the first study is tall and has a heat source embedded on its bottom wall, while its left, right
and top walls are maintained at a relatively low temperature. The working fluid is a water based nanofluid
having three nanoparticle types: alumina, copper and copper oxide. The influence of pertinent parameters
such as the Rayleigh number, the type of nanofluid and solid volume fraction of nanoparticles on the cooling
performance is studied. Steady forms of two dimensional Reynolds-Averaged-Navier-Stokes equations and
conservation equations of mass and energy, coupled with the Boussinesq approximation, are solved by the
control volume based discretisation method employing the SIMPLE algorithm for pressure-velocity
coupling. Turbulence is modeled using the standard k-ε model. The Rayleigh number, Ra, is varied from
2.49x1009 to 2.49x1011. The volume fractions of nanoparticles were varied in the interval 0≤φ≤ 6% . Stream
lines, isotherms, velocity profiles and Temperature profiles are presented for various combinations of Ra,
the type of nanofluid and solid volume fraction of nanoparticles. The results are reported in the form of
average Nusselt number on the heated wall. It is shown that for all values of Ra, the average heat transfer
rate from the heat source increases almost linearly and monotonically as the solid volume fraction increases.
Finally the average heat transfer rate takes on values that decrease according to the ordering Cu, CuO and
Al2O3.
In the second study we determined the heat transfer and friction characteristics of a realistic fin-andtube heat exchanger . The computations assume steady-state heat transfer and fluid flow. Nusselt number
and friction factor characteristics of the heat exchanger are presented for various values of Reynolds
numbers. The energy conservation and the heat conduction equations in 3 dimensions have been solved
in the fluid and the solid respectivelyalong with the mass and momentum conservation equations in order
to determine these characteristics. Both laminar and turbulent flow regimes are considered. The effect of
turbulence modeling was investigated using three different models (the one equation Spalart-Allmaras
turbulence model, the standard k-ε model and the RSM model). The computations allowed the
determination of the dynamic and thermal fields. Model validation was carried out by comparing the
calculated friction factor f and Colburn j-factor to experimental results found in the literature. The
plotted results showed a qualitatively good agreement between numerical results and experimental data. The
results obtained also showed that the simplest of the three turbulence models tested(i.e. SpalartAllmaras) gives the closest values to the experimental data
Diplôme : Doctorat en sciences En ligne : ../theses/gmecanique/MEB7154.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10428 Etude paramétrique des échanges convectifs turbulents dans les configurations d’intérêt pratique [texte imprimé] / Ridha Mebrouk, Auteur ; Abderrahim Boudenne, Directeur de thèse ; Yassine Kabar, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2017 . - 139 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Tags : Convection turbulente Simulation numérique Nanofluide Enceinte chauffée par le bas,
Convection forcée Echanges turbulents Echangeur de chaleur Transfert thermique conjugué Turbulent convection Numerical simulation Nanofluid Enclosure heated from below Forced
convection Turbulent exchanges Heat exchanger Conjugate heat transfer ????? ???????? ???????? ???????? ????????? ??????? ????? ?? ??????? ????? ??????? ??????? ???????? ?????????
???????????? ??????? ?????????Index. décimale : 620 Génie Mécanique Résumé : This thesis presents the results of two studies: the first concerns natural turbulent convection in a
rectangular cavity heated from the bottom wall and filled with a nanofluid and the second relates to the
investigation of conjugate heat transfer in a fin-and-tube heat exchanger.
The cavity of the first study is tall and has a heat source embedded on its bottom wall, while its left, right
and top walls are maintained at a relatively low temperature. The working fluid is a water based nanofluid
having three nanoparticle types: alumina, copper and copper oxide. The influence of pertinent parameters
such as the Rayleigh number, the type of nanofluid and solid volume fraction of nanoparticles on the cooling
performance is studied. Steady forms of two dimensional Reynolds-Averaged-Navier-Stokes equations and
conservation equations of mass and energy, coupled with the Boussinesq approximation, are solved by the
control volume based discretisation method employing the SIMPLE algorithm for pressure-velocity
coupling. Turbulence is modeled using the standard k-ε model. The Rayleigh number, Ra, is varied from
2.49x1009 to 2.49x1011. The volume fractions of nanoparticles were varied in the interval 0≤φ≤ 6% . Stream
lines, isotherms, velocity profiles and Temperature profiles are presented for various combinations of Ra,
the type of nanofluid and solid volume fraction of nanoparticles. The results are reported in the form of
average Nusselt number on the heated wall. It is shown that for all values of Ra, the average heat transfer
rate from the heat source increases almost linearly and monotonically as the solid volume fraction increases.
Finally the average heat transfer rate takes on values that decrease according to the ordering Cu, CuO and
Al2O3.
In the second study we determined the heat transfer and friction characteristics of a realistic fin-andtube heat exchanger . The computations assume steady-state heat transfer and fluid flow. Nusselt number
and friction factor characteristics of the heat exchanger are presented for various values of Reynolds
numbers. The energy conservation and the heat conduction equations in 3 dimensions have been solved
in the fluid and the solid respectivelyalong with the mass and momentum conservation equations in order
to determine these characteristics. Both laminar and turbulent flow regimes are considered. The effect of
turbulence modeling was investigated using three different models (the one equation Spalart-Allmaras
turbulence model, the standard k-ε model and the RSM model). The computations allowed the
determination of the dynamic and thermal fields. Model validation was carried out by comparing the
calculated friction factor f and Colburn j-factor to experimental results found in the literature. The
plotted results showed a qualitatively good agreement between numerical results and experimental data. The
results obtained also showed that the simplest of the three turbulence models tested(i.e. SpalartAllmaras) gives the closest values to the experimental data
Diplôme : Doctorat en sciences En ligne : ../theses/gmecanique/MEB7154.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10428 Exemplaires
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