CFD Study on Hydrogen Engine Mixture Formation and Combustion
Author: Fushui Liu
Publisher: Cuvillier Verlag
Published: 2004
Total Pages: 136
ISBN-13: 3865371671
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CFD Study on Hydrogen Engine Mixture Formation and Combustion
Author:
Publisher: Cuvillier Verlag
Published: 2004-09-20
Total Pages: 164
ISBN-13: 373691167X
DOWNLOAD EBOOKThe impending worldwide energy crisis, most importantly the potential crisis of fossil fuels, and the ever increasing environmental impacts caused by automobiles have made it a great necessity to find a clean, regenerative energy form for the future. Hydrogen, the most abundant element in the universe, is being regarded as the most appropriate and promising energy carrier. Hydrogen engine, based on the well-developed IC engine industries, is accepted to be a practical mean to use hydrogen fuel. Focusing on the hydrogen direct injection engine, the whole process, including hydrogen injection, mixture formation, ignition and combustion, is studied and an optimized control strategy is put forward to minimize the NOx emission. Instead of the routine laboratory work, most of the work is carried out with the help of well-known CFD Code AVL FIRE. In order to ensure the simulation results to be reliable, great effort has been put on verification and validation of the Code.
Simulation of a Hydrogen Internal Combustion Engine with Cryogenic Mixture Formation
Author: Simon Ellgas
Publisher: Cuvillier Verlag
Published: 2008
Total Pages: 29
ISBN-13: 3867275297
DOWNLOAD EBOOKMixture Formation in Internal Combustion Engines
Author: Carsten Baumgarten
Publisher: Springer Science & Business Media
Published: 2006-09-28
Total Pages: 312
ISBN-13: 3540308369
DOWNLOAD EBOOKA systematic control of mixture formation with modern high-pressure injection systems enables us to achieve considerable improvements of the combustion pr- ess in terms of reduced fuel consumption and engine-out raw emissions. However, because of the growing number of free parameters due to more flexible injection systems, variable valve trains, the application of different combustion concepts within different regions of the engine map, etc., the prediction of spray and m- ture formation becomes increasingly complex. For this reason, the optimization of the in-cylinder processes using 3D computational fluid dynamics (CFD) becomes increasingly important. In these CFD codes, the detailed modeling of spray and mixture formation is a prerequisite for the correct calculation of the subsequent processes like ignition, combustion and formation of emissions. Although such simulation tools can be viewed as standard tools today, the predictive quality of the sub-models is c- stantly enhanced by a more accurate and detailed modeling of the relevant pr- esses, and by the inclusion of new important mechanisms and effects that come along with the development of new injection systems and have not been cons- ered so far. In this book the most widely used mathematical models for the simulation of spray and mixture formation in 3D CFD calculations are described and discussed. In order to give the reader an introduction into the complex processes, the book starts with a description of the fundamental mechanisms and categories of fuel - jection, spray break-up, and mixture formation in internal combustion engines.
Handbook of Hydrogen Energy
Author: S.A. Sherif
Publisher: CRC Press
Published: 2014-07-29
Total Pages: 1062
ISBN-13: 1420054473
DOWNLOAD EBOOKCan hydrogen and electricity supply all of the world’s energy needs? Handbook of Hydrogen Energy thoroughly explores the notion of a hydrogen economy and addresses this question. The handbook considers hydrogen and electricity as a permanent energy system and provides factual information based on science. The text focuses on a large cross section of applications such as fuel cells and catalytic combustion of hydrogen. The book also includes information on inversion curves, physical and thermodynamic tables, and properties of storage materials, data on specific heats, and compressibility and temperature–entropy charts and more. Analyzes the principles of hydrogen energy production, storage, and utilization Examines electrolysis, thermolysis, photolysis, thermochemical cycles, and production from biomass and other hydrogen production methods Covers all modes of hydrogen storage: gaseous, liquid, slush, and metal hydride storage Handbook of Hydrogen Energy serves as a resource for graduate students, as well as a reference for energy and environmental engineers and scientists.
Renewable Hydrogen Technologies
Author: Luis M Gandia
Publisher: Newnes
Published: 2013-05-03
Total Pages: 471
ISBN-13: 044456361X
DOWNLOAD EBOOKThe fields covered by the hydrogen energy topic have grown rapidly, and now it has become clearly multidisciplinary. In addition to production, hydrogen purification and especially storage are key challenges that could limit the use of hydrogen fuel. In this book, the purification of hydrogen with membrane technology and its storage in "solid" form using new hydrides and carbon materials are addressed. Other novelties of this volume include the power conditioning of water electrolyzers, the integration in the electric grid of renewable hydrogen systems and the future role of microreactors and micro-process engineering in hydrogen technology as well as the potential of computational fluid dynamics to hydrogen equipment design and the assessment of safety issues. Finally, and being aware that transportation will likely constitute the first commercial application of hydrogen fuel, two chapters are devoted to the recent advances in hydrogen fuel cells and hydrogen-fueled internal combustion engines for transport vehicles. - Hydrogen from water and biomass considered - Holistic approach to the topic of renewable hydrogen production - Power conditioning of water electrolyzers and integration of renewable hydrogen energy systems considered - Subjects not included in previous books on hydrogen energy - Micro process technology considered - Subject not included in previous books on hydrogen energy - Applications of CFD considered - Subject not included in previous books on hydrogen energy - Fundamental aspects will not be discussed in detail consciously as they are suitably addressed in previous books - Emphasis on technological advancements - Chapters written by recognized experts - Up-to date approach to the subjects and relevant bibliographic references
Zero-Carbon Energy Kyoto 2011
Author: Takeshi Yao
Publisher: Springer Science & Business Media
Published: 2012-04-26
Total Pages: 333
ISBN-13: 4431540660
DOWNLOAD EBOOKSince 2008, the Global Center of Excellence (COE) at Kyoto University, Japan, has been engaged in a program called “Energy Science in the Age of Global Warming—Toward a CO2 Zero-Emission Energy System.” Its aim is to establish an international education and research platform to foster educators, researchers, and policy makers who can develop technologies and propose policies for establishing a CO2 zero-emission society no longer dependent on fossil fuels. It is well known that the energy problem cannot simply be labeled a technological one, as it is also deeply involved with social and economic issues. The establishment of a “low-carbon energy science” as an interdisciplinary field integrating social sciences with natural sciences is necessary. The Global COE is setting out a zero-emission technology roadmap and is promoting socioeconomic studies of energy, studies of new technologies for renewable energies, and research for advanced nuclear energy. It has also established the Global COE Unit for Energy Science Education to support young researchers as they apply their skills and knowledge and a broad international perspective to respond to issues of energy and the environment in our societies. Comprising the proceedings of the Third International Symposium of the Global COE Program, this book follows on the earlier volumes Zero-Carbon Energy Kyoto 2009 and 2010, published in March 2010 and February 2011, respectively.
Which Fuels for Low CO2 Engines?
Author: Pierre Duret
Publisher: Editions TECHNIP
Published: 2004
Total Pages: 252
ISBN-13: 9782710808510
DOWNLOAD EBOOKThroughout the world, research and development in the field of vehicle transportation is increasingly focusing on engine and fuel combinations. The conventional and alternative fuels of the future are seen as fundamental to the development of a new generation of internal combustion engines that attain low well-to-wheel CO2 emissions along with near-zero pollutant emissions. These issues were debated during an international conference whose proceedings are presented in this book. This international conference attracted specialists in the field, including participants from universities, research centres and industry.Contents : Future of liquid fuels, Engine and fuel-related issues in HCCI & CAI combustion, Energy conversion in engines from natural gas, Use of hydrogen in IC engines, Which fuels for low CO2 engines?
Progress in Combustion Diagnostics, Science and Technology
Author: Paul Medwell
Publisher: MDPI
Published: 2020-03-25
Total Pages: 336
ISBN-13: 3039285106
DOWNLOAD EBOOKThe role that combustion plays in the world’s energy systems will continue to evolve with the changes in technological demands. For example, the challenges that we face today are more focused on the conservation of energy and addressing environmental concerns, which together necessitate cleaner and more efficient combustion processes using a range of fuel sources. This book includes contributions to highlight the recent progress in theory and experiments, development, and demonstration of technologies and systems involving combustion processes, for the production, storage, use, and conservation of energy.
Smart Energy Strategies
Author:
Publisher: vdf Hochschulverlag AG
Published: 2008
Total Pages: 151
ISBN-13: 3728132187
DOWNLOAD EBOOKThe enormous challenge of creating a longterm sustainable energy system calls for the participation of engineers, natural and social scientists. They can contribute both through their research and by helping to craft strategies that steer the future development of the system. A sustainable energy system cannot be developed by technical fixes alone; action is required on a broad front, including institutional and regulatory changes. There is an abundance of scientific evidence on which to base decisions on how to proceed. Still, research has a crucial role to play as well.Smart Energy Strategies highlights smart solutions: advances in technical and social-science energy research, particularly advances related to new information technology (e.g. control and communication); and experience with targeted applications of information technology in the supply and consumption of energy. The conference has focused on smart strategies taking into account current technical and institutional systems, with their inertia and shortcomings; future energy-related challenges: energy security; the growing energy needs of the disadvantaged; and unintended consequences of energy systems, particularly climate change but also uncontrolled money flows; smart technical, institutional, and regulatory mechanisms for meeting these challenges.
