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Author: FLORENCE.. POYELLE
Publisher:
ISBN:
Category :
Languages : fr
Pages : 200
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Book Description
LES SYSTEMES A SORPTION APPLIQUES A LA REFRIGERATION REPRESENTENT UNE ALTERNATIVE AUX SYSTEMES A COMPRESSION, CLASSIQUEMENT UTILISES. UN OBJET DE CES TRAVAUX DE THESE EST DE CONCEVOIR, REALISER ET TESTER UNE MACHINE FRIGORIFIQUE A ADSORPTION SOLIDE FONCTIONNANT SELON UN PROCEDE A TEMPERATURE UNIFORME ET UTILISANT DEUX ADSORBEURS AVEC UNE RECUPERATION DE MASSE ET DE CHALEUR. LE COUPLE ADSORBANT-ADSORBAT UTILISE EST LE COUPLE ZEOLITHE NAX-EAU. L'UTILISATION D'UN NOUVEAU COMPOSITE ADSORBANT CONSOLIDE, A BASE DE GRAPHITE NATUREL EXPANSE ET DE ZEOLITHE NAX, PERMET D'AUGMENTER LE TRANSFERT DE CHALEUR DANS LE LIT D'ADSORBANT, ET D'AUGMENTER AINSI LA PUISSANCE EXTRAITE DE LA MACHINE. L'USAGE DE CE COMPOSITE ADSORBANT DANS L'INSTALLATION EXPERIMENTALE MISE AU POINT FAIT APPARAITRE UNE RESISTANCE AU TRANSFERT DE LA VAPEUR DANS LE LIT D'ADSORBANT. LES EFFETS DE CETTE RESISTANCE SONT LEVES, A HAUTE TEMPERATURE D'EVAPORATION (25 A 30C). C'EST POURQUOI L'ETUDE A EGALEMENT ETE MENEE POUR DES TEMPERATURES ELEVEES D'EVAPORATION. EN COMPARAISON AVEC DE PRECEDENTES EXPERIENCES, LA PUISSANCE DE FROID EXTRAITE PAR UNITE D'ADSORBANT A ETE MULTIPLIEE PAR UN FACTEUR 5, LA PUISSANCE DE FROID EXTRAITE PAR UNITE DE VOLUME DU REACTEUR A ETE MULTIPLIEE PAR UN FACTEUR 2.6. UN MODELE NUMERIQUE, QUI PREND EN COMPTE LES EFFETS DE TRANSFERT THERMIQUE ET DE TRANSFERT DE MASSE, A EGALEMENT ETE MIS AU POINT. IL REND TRES BIEN COMPTE DES RESULTATS EXPERIMENTAUX OBSERVES ET S'AVERE ETRE UN OUTIL INDISPENSABLE A LA COMPREHENSION DU PHENOMENE. UNE ANALYSE THERMODYNAMIQUE QUI S'APPUIE SUR LES PREMIER ET DEUXIEME PRINCIPES DE LA THERMODYNAMIQUE A ETE DEVELOPPEE ; ELLE A ETE MENEE THEORIQUEMENT PUIS SUR LES RESULTATS EXPERIMENTAUX. ELLE PERMET DE DETERMINER LE SIEGE DES PRINCIPALES IRREVERSIBILITES QUI PENALISENT LES PERFORMANCES DU SYSTEME.
Author: FLORENCE.. POYELLE
Publisher:
ISBN:
Category :
Languages : fr
Pages : 200
Get Book Here
Book Description
LES SYSTEMES A SORPTION APPLIQUES A LA REFRIGERATION REPRESENTENT UNE ALTERNATIVE AUX SYSTEMES A COMPRESSION, CLASSIQUEMENT UTILISES. UN OBJET DE CES TRAVAUX DE THESE EST DE CONCEVOIR, REALISER ET TESTER UNE MACHINE FRIGORIFIQUE A ADSORPTION SOLIDE FONCTIONNANT SELON UN PROCEDE A TEMPERATURE UNIFORME ET UTILISANT DEUX ADSORBEURS AVEC UNE RECUPERATION DE MASSE ET DE CHALEUR. LE COUPLE ADSORBANT-ADSORBAT UTILISE EST LE COUPLE ZEOLITHE NAX-EAU. L'UTILISATION D'UN NOUVEAU COMPOSITE ADSORBANT CONSOLIDE, A BASE DE GRAPHITE NATUREL EXPANSE ET DE ZEOLITHE NAX, PERMET D'AUGMENTER LE TRANSFERT DE CHALEUR DANS LE LIT D'ADSORBANT, ET D'AUGMENTER AINSI LA PUISSANCE EXTRAITE DE LA MACHINE. L'USAGE DE CE COMPOSITE ADSORBANT DANS L'INSTALLATION EXPERIMENTALE MISE AU POINT FAIT APPARAITRE UNE RESISTANCE AU TRANSFERT DE LA VAPEUR DANS LE LIT D'ADSORBANT. LES EFFETS DE CETTE RESISTANCE SONT LEVES, A HAUTE TEMPERATURE D'EVAPORATION (25 A 30C). C'EST POURQUOI L'ETUDE A EGALEMENT ETE MENEE POUR DES TEMPERATURES ELEVEES D'EVAPORATION. EN COMPARAISON AVEC DE PRECEDENTES EXPERIENCES, LA PUISSANCE DE FROID EXTRAITE PAR UNITE D'ADSORBANT A ETE MULTIPLIEE PAR UN FACTEUR 5, LA PUISSANCE DE FROID EXTRAITE PAR UNITE DE VOLUME DU REACTEUR A ETE MULTIPLIEE PAR UN FACTEUR 2.6. UN MODELE NUMERIQUE, QUI PREND EN COMPTE LES EFFETS DE TRANSFERT THERMIQUE ET DE TRANSFERT DE MASSE, A EGALEMENT ETE MIS AU POINT. IL REND TRES BIEN COMPTE DES RESULTATS EXPERIMENTAUX OBSERVES ET S'AVERE ETRE UN OUTIL INDISPENSABLE A LA COMPREHENSION DU PHENOMENE. UNE ANALYSE THERMODYNAMIQUE QUI S'APPUIE SUR LES PREMIER ET DEUXIEME PRINCIPES DE LA THERMODYNAMIQUE A ETE DEVELOPPEE ; ELLE A ETE MENEE THEORIQUEMENT PUIS SUR LES RESULTATS EXPERIMENTAUX. ELLE PERMET DE DETERMINER LE SIEGE DES PRINCIPALES IRREVERSIBILITES QUI PENALISENT LES PERFORMANCES DU SYSTEME.
Author: Chaouki Ghenai
Publisher: BoD – Books on Demand
ISBN: 1789233003
Category : Technology & Engineering
Languages : en
Pages : 152
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Book Description
Air conditioning system is one of the major consumers of electrical energy in many parts of the world today. It represents between 40 and 70% of the energy consumption in commercial buildings. The demand of energy for air conditioning systems is expected to increase further in the next decades due to the population growth, the new economic boom, and the urbanization development. The rapid growth of air conditioning and electricity consumption will contribute further to climate change if fossil and nonrenewable resources are used. More energy-efficient and renewable energy-based air conditioning systems to accomplish space cooling are needed. This book intends to provide the reader with a comprehensive overview of the current state of the art in sustainable air conditioning technologies and focus on the most recent research and development on green air conditioning systems including energy-efficient and renewable energy-based air conditioning systems.
Author: International Institute of Refrigeration
Publisher:
ISBN:
Category : Refrigeration and refrigerating machinery
Languages : fr
Pages : 774
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Book Description
Some numbers called Special issue and consist of summaries of papers to be presented at the International Congresses of Refrigeration.
Author: Ahmed Belasri
Publisher: Springer Nature
ISBN: 9811554447
Category : Technology & Engineering
Languages : en
Pages : 659
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Book Description
This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.
Author: James P. Waltz
Publisher: The Fairmont Press, Inc.
ISBN: 0881732591
Category : Architecture
Languages : en
Pages : 224
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Book Description
This text looks at the non-software aspects of using computerized building energy simulation. If you have been frustrated trying to build faithful models of existing buildings, or have become skeptical of the efficacy of building simulation this book should offer you welcome assistance.
Author: Christoph Lehmann
Publisher: Springer
ISBN: 3319715232
Category : Technology & Engineering
Languages : en
Pages : 102
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Book Description
Thermochemical gas-solid reactions, as well as adsorption processes, are currently of significant interest for the design of heat storage systems. This book provides detailed models of these reactions and processes that account for heat and mass transport, chemical and physical reactions, and possible local thermal non-equilibrium. The underlying scientific theory behind the models is explained, laboratory tests are simulated, and methods for high-performance computing are discussed. Applications ranging from seasonal domestic heat storage to diurnally operating systems in concentrating solar power facilities are considered in these models, which are not available through any other sources. Finally, an outlook on future developments highlights emerging technologies.
Author: Motoyuki Suzuki
Publisher:
ISBN: 9780444412959
Category :
Languages : en
Pages : 295
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Book Description
Author: H. Brodowsky
Publisher: Springer Science & Business Media
ISBN: 9400910274
Category : Technology & Engineering
Languages : en
Pages : 579
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Book Description
The thermochemistry of alloys has interested generations of scientists and the subject was treated in classical textbooks long ago, e.g. by Hume-Rothery, by Wagner, and by Kubaschewski and Alcock. Nevertheless, the appearance of new materials and the desire to improve traditional materials and metallurgical processes has kept up demand for more information on the thermodynamics of these systems. The advent of computing power has created new opportunities to tie various aspects and properties together, such as phase diagrams and thermodynamic functions, that are in principle thermodynamically inter related but were too cumbersome to work out before. The computer has also been a powerful tool in buUding and testing models that help to explain the underlying causes of non-ideal behavior. At the same time, these calculations have pinpointed areas, where additional and more accurate data are needed. In the laboratory, new methods, improved materials, and sophistica ted instrumentation have gradually changed the way in which experiments are done. Within the time span of perhaps thirty years, the development went from jotting down individual readings of data points to strip chart recording to automatic digital data acquisition. Scholars and students active in the field of "Thermochemistry of Alloys" convened for a NATO Advanced Study Institute at Kiel in August 1987 to discuss these developments. This book collects most of the lectures and seminar papers given at the Institute.
Author: Rod Martin
Publisher: Elsevier
ISBN: 1845694937
Category : Technology & Engineering
Languages : en
Pages : 543
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Book Description
Ageing of composites is a highly topical subject given the increasing use of composites in structural applications in many industries. Ageing of composites addresses many of the uncertainties about the long-term performance of composites and how they age under conditions encountered in service.The first part of the book reviews processes and modelling of composite ageing including physical and chemical ageing of polymeric composites, ageing of glass-ceramic matrix composites, chemical ageing mechanisms, stress corrosion cracking, thermo-oxidative ageing, spectroscopy of ageing composites, modelling physical and accelerated ageing and ageing of silicon carbide composites. Part two examines ageing of composites in transport applications including aircraft, vehicles and ships. Part three reviews ageing of composites in non-transport applications such as implants in medical devices, oil and gas refining, construction, chemical processing and underwater applications.With its distinguished editor and international team of contributors, Ageing of composites is a valuable reference guide for composite manufacturers and developers. It also serves as a source of information for material scientists, designers and engineers in industries that use composites, including transport, chemical processing and medical engineering. - Addresses many of the uncertainties about the long-term performance of composites and how they age under conditions encountered in service - Reviews processes and modelling of composite ageing including chemical ageing mechanisms and stress corrosion cracking - Discusses ageing of composites in both transport and non-transport applications ranging from aircraft to implants in medical devices
Author: Golla Eranna
Publisher: CRC Press
ISBN: 1482232812
Category : Science
Languages : en
Pages : 432
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Book Description
Silicon, as a single-crystal semiconductor, has sparked a revolution in the field of electronics and touched nearly every field of science and technology. Though available abundantly as silica and in various other forms in nature, silicon is difficult to separate from its chemical compounds because of its reactivity. As a solid, silicon is chemically inert and stable, but growing it as a single crystal creates many technological challenges. Crystal Growth and Evaluation of Silicon for VLSI and ULSI is one of the first books to cover the systematic growth of silicon single crystals and the complete evaluation of silicon, from sand to useful wafers for device fabrication. Written for engineers and researchers working in semiconductor fabrication industries, this practical text: Describes different techniques used to grow silicon single crystals Explains how grown single-crystal ingots become a complete silicon wafer for integrated-circuit fabrication Reviews different methods to evaluate silicon wafers to determine suitability for device applications Analyzes silicon wafers in terms of resistivity and impurity concentration mapping Examines the effect of intentional and unintentional impurities Explores the defects found in regular silicon-crystal lattice Discusses silicon wafer preparation for VLSI and ULSI processing Crystal Growth and Evaluation of Silicon for VLSI and ULSI is an essential reference for different approaches to the selection of the basic silicon-containing compound, separation of silicon as metallurgical-grade pure silicon, subsequent purification, single-crystal growth, and defects and evaluation of the deviations within the grown crystals.
