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Author: Marta de la Cruz Garcia
Publisher:
ISBN:
Category :
Languages : fr
Pages : 293
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Book Description
L'utilisation combinée de l'hydrogène avec des hydrocarbures s'avère aujourd'hui comme une solution possible pour la réduction des émissions polluantes ainsi que pour le contrôle des instabilités de combustion. Durant les travaux de cette thèse, un brûleur multi-combustible de géométrie cylindrique a été conçu, fabriqué et optimisé : une flamme de prémélange propane-air d'injection annulaire réagit sous l'action d'un jet central d'hydrogène. Ce jet permet l'injection multidirectionnelle de l'hydrogène : axiale, tournante ou la combinaison des deux. La flamme de prémélange propane-air présente deux types d'instabilités en fonction du débit d'air : à bas débits d'air nous avons observé un couplage thermo-acoustique identique avec le mode quart d'onde de la chambre de combustion ; à hauts débits d'air, l'instabilité paraît être une amplification du bruit du jet. L'effet de l'hydrogène varie alors en fonction du type d'instabilité de la flamme de prémélange. L'injection centrale d'hydrogène a un effet qui dépend du type d'instabilité du brûleur. L'instabilité des bas débits d'air est contrôlée par le swirl central d'hydrogène. En revanche, l'instabilité des hauts débits d'air est amplifiée avec l'injection d'hydrogène et atteint même des limites dangereuses si cette injection est tournante. Le contrôle est fait par la stabilisation de la flamme de prémélange sur le jet tournant d'hydrogène.
Author: Marta de la Cruz Garcia
Publisher:
ISBN:
Category :
Languages : fr
Pages : 293
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Book Description
L'utilisation combinée de l'hydrogène avec des hydrocarbures s'avère aujourd'hui comme une solution possible pour la réduction des émissions polluantes ainsi que pour le contrôle des instabilités de combustion. Durant les travaux de cette thèse, un brûleur multi-combustible de géométrie cylindrique a été conçu, fabriqué et optimisé : une flamme de prémélange propane-air d'injection annulaire réagit sous l'action d'un jet central d'hydrogène. Ce jet permet l'injection multidirectionnelle de l'hydrogène : axiale, tournante ou la combinaison des deux. La flamme de prémélange propane-air présente deux types d'instabilités en fonction du débit d'air : à bas débits d'air nous avons observé un couplage thermo-acoustique identique avec le mode quart d'onde de la chambre de combustion ; à hauts débits d'air, l'instabilité paraît être une amplification du bruit du jet. L'effet de l'hydrogène varie alors en fonction du type d'instabilité de la flamme de prémélange. L'injection centrale d'hydrogène a un effet qui dépend du type d'instabilité du brûleur. L'instabilité des bas débits d'air est contrôlée par le swirl central d'hydrogène. En revanche, l'instabilité des hauts débits d'air est amplifiée avec l'injection d'hydrogène et atteint même des limites dangereuses si cette injection est tournante. Le contrôle est fait par la stabilisation de la flamme de prémélange sur le jet tournant d'hydrogène.
Author: Amory B. Lovins
Publisher: Earthscan
ISBN: 9781844071944
Category : Business & Economics
Languages : en
Pages : 340
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Book Description
Enough about the oil problem. Here?s the solution.Over a few decades, starting now, a vibrant US economy (then others) can completely phase out oil. This will save a net $70 billion a year, revitalize key industries and rural America, create a million jobs, and enhance security.Here?s the roadmap ? independent, peer-reviewed, co-sponsored by the Pentagon ? for the transition beyond oil, led by business and profit.
Author: David G. Lovering
Publisher: Springer
ISBN: 1475717245
Category : Education
Languages : en
Pages : 536
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Book Description
Author: Bernard F. Kolanowski
Publisher: The Fairmont Press, Inc.
ISBN: 0881734225
Category : Technology & Engineering
Languages : en
Pages : 219
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Book Description
This comprehensive reference provides a wealth of information to assist you in evaluating the feasibility and potential benefits of cogeneration for your facility. It has been revised to include an additional chapter and regulatory developments.
Author: Thomas A. Milne
Publisher:
ISBN: 9781890607142
Category : Biomass energy
Languages : en
Pages : 68
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Book Description
Author: France. Commissariat à l'énergie atomique
Publisher:
ISBN:
Category : Fuel cycle
Languages : en
Pages : 192
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Book Description
Author: Shin'ya Obara
Publisher: Nova Science Publishers
ISBN: 9781606925430
Category : Distributed generation of electric power
Languages : en
Pages : 0
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Book Description
From deregulation of energy business, and an environmental problem, the installation spread of the small-scale distribution power due to a fuel cell and a heat engine is expected. Under the objective function set up by the designer or the user, optimisation planning that controls small-scale distribution power is required. In dynamic operation planning of the energy plant, the analysis method using mixed integer linear programming is developed. For the compound energy systems of solar modules and fuel cell cogeneration, there have been no reports of the optimisation of operation planning. Therefore, there are no results showing the relationship between the objective function given to the combined system and operation planning. Such as a solar modules or wind power, green-energy equipment is accompanied by the fluctuation of an output in many cases. Almost all green energy equipment requires backup by commercial power, fuel cells, heat engines, etc. Operation planning of the system that utilises renewable energy differs by the objective function and power and heat load pattern. Thus, this book investigates the operation planning of the compound energy system composed of proton exchange membrane fuel cell cogeneration with methanol steam-reforming equipment, a solar module, geo-thermal heat pump, heat storage, water electrolysis equipment, commercial power, and a kerosene boiler. In such a complex energy system, facility cost is expensive. However, in this book, it investigates as a case of the independent power source for backlands with renewable energy. This book considers the operation planning of a system, and the optimisation of equipment capacity. The Genetic Algorithm (hereafter described as GA) applicable to a non-linear problem with many variables is installed into the optimisation calculation of the operation planning of the system. In the operation analysis of a complex energy system, Mixed Integer Programming (MIP) other than GA can be used. Because the non-linear analysis using MIP is made to approximate using a linear expression of relations, it is considered that an error is large. On the other hand, GA is applicable to the analysis of the non-linear problem of many variables. The range of the analysis accuracy obtained by calculation with GA is understood that it can use industrially. In GA, the design variable of energy equipment is shown with many gene models. In this book, the objective functions given to the system were set up as (1) Minimisation of error in demand-and-supply balance, (2) Minimisation of the operation cost (fuel consumption) of energy equipment, (3) Minimisation of the carbon dioxide gas emission accompanying operation, and (4) Minimisation of the three objective functions described above. The load pattern in winter (February) and summer (August) of the average individual house in Sapporo, Japan, is used for the energy demand model shown with a case study. This chapter described the operation plan of the independence energy system when installing a methanol steam-reforming type fuel cell and renewable energy into a cold region house. Such complex operation optimization of the energy system did not have a report until now. Consequently, the method of installing and analysing the GA apply to the non-linear problem of many variables was proposed. In points of equipment cost, it is difficult for a proposed system to spread generally. However, the installation to the area where the commercial power is not fixed is possible.
Author: Cyril M. Harris
Publisher: McGraw-Hill Companies
ISBN:
Category : Architecture
Languages : en
Pages : 576
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Book Description
Updated and expanded, this Fourth Edition of the most trusted reference in architecture offers the most comprehensive coverage of architectural and construction terms available. This classic dictionary now features nearly 25,000 definitions (including 2,800 new terms), 2,500 illustrations (including 200 new illustrations), and maintains its extraordinary visual appeal and easy-to-read page design.Prepared by a renowned architectural editor in association with expert contributors and incorporating the work of many standards groups, the book presents clear, concise definitions of terms in nearly 80 working areas. The Fourth Edition covers new industry terms which have emerged due to changes in engineering and building technologies, organizations, materials, and legal developments, and has been expanded to include more historic architectural styles. New terms include:LegalArchitectural Barriers ActWheelchair AccessibleMaterialsFibrous ConcreteLatex MortarPolymer-Based StuccoConcrete Compliance ConformityRefractory MortarOrganizationsBuilding Research Establishment (formerly Building Research Station) of Great BritainASTMHistoric Architectural StylesAnglo-PalladianismFrench VictorianIsabellinoMudajarMozarabicNeo-Rococo
Author: Onkar Singh
Publisher: New Age International
ISBN: 8122417639
Category : Heat
Languages : en
Pages : 43
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Book Description
This Book Presents A Systematic Account Of The Concepts And Principles Of Engineering Thermodynamics And The Concepts And Practices Of Thermal Engineering. The Book Covers Basic Course Of Engineering Thermodynamics And Also Deals With The Advanced Course Of Thermal Engineering. This Book Will Meet The Requirements Of The Undergraduate Students Of Engineering And Technology Undertaking The Compulsory Course Of Engineering Thermodynamics. The Subject Matter Of Book Is Sufficient For The Students Of Mechanical Engineering/Industrial-Production Engineering, Aeronautical Engineering, Undertaking Advanced Courses In The Name Of Thermal Engineering/Heat Engineering/ Applied Thermodynamics Etc. Presentation Of The Subject Matter Has Been Made In Very Simple And Understandable Language. The Book Is Written In Si System Of Units And Each Chapter Has Been Provided With Sufficient Number Of Typical Numerical Problems Of Solved And Unsolved Questions With Answers.
Author: Don Montague
Publisher: Taylor & Francis
ISBN: 9780419199106
Category : Architecture
Languages : en
Pages : 472
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Book Description
This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.
