Download or read book Conversion of Gas Turbine Combustors to Operate with a Hydrogen Air Mixture written by Francisco Br√≥jo and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work, an overview of the use of hydrogen in aviation, the modifications needed to adapt an existent gas turbine to use hydrogen, and a CFD simulation of an existent gas turbine burning hydrogen are performed. The CFD simulation was done in a CFM56-3 combustor burning hydrogen and Jet A. It was intended to evaluate the viability of conversion of existent gas turbines to hydrogen, in a combustion point of view, by analyzing the emissions while burning it through ICAO,Äôs LTO cycle. The pollutant emissions (only NOx, since hydrogen combustion produce only water vapor and NOx) were evaluated through a detailed mechanism and the Ansys Fluent NOx model to get a better agreement with the ICAO,Äôs values. For this assessment, several sensibility studies were made for hydrogen burn, for example, the analysis of the air flow with/without swirl in the primary zone and different inlet temperature and pressure for fuel. In the end, it was concluded that theoretically the CFM56-3 combustor can be converted to operate with hydrogen fuel with minor changes (related to injection system). The quantity of NOx produced for each power setting when burning hydrogen is expected to be almost twice the values for Jet A.
Download or read book Science and Engineering of Hydrogen Based Energy Technologies written by Paulo Emilio Miranda and published by Academic Press. This book was released on 2018-11-12 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Science and Engineering of Hydrogen-Based Energy Technologies explores the generation of energy using hydrogen and hydrogen-rich fuels in fuel cells from the perspective of its integration into renewable energy systems using the most sound and current scientific knowledge. The book first examines the evolution of energy utilization and the role expected to be played by hydrogen energy technologies in the world’s energy mix, not just for energy generation, but also for carbon capture, storage and utilization. It provides a general overview of the most common and promising types of fuel cells, such as PEMFCs, SOFCs and direct alcohol fuel cells. The co-production of chemical and electrolysis cells, as well as the available and future materials for fuel cells production are discussed. It then delves into the production of hydrogen from biomass, including waste materials, and from excess electricity produced by other renewable energy sources, such as solar, wind, hydro and geothermal. The main technological approaches to hydrogen storage are presented, along with several possible hydrogen energy engineering applications. Science and Engineering of Hydrogen-Based Energy Technologies’s unique approach to hydrogen energy systems makes it useful for energy engineering researchers, professionals and graduate students in this field. Policy makers, energy planning and management professionals, and energy analysts can also benefit from the comprehensive overview that it provides. Presents engineering fundamentals, commercially deployed technologies, up-and-coming developments and applications through a systemic approach Explores the integration of hydrogen technologies in renewable energy systems, including solar, wind, bioenergy and ocean energy Covers engineering standards, guidelines and regulations, as well as policy and social aspects for large-scale deployment of these technologies
Download or read book Flashback Mechanisms in Lean Premixed Gas Turbine Combustion written by Ali Cemal Benim and published by Academic Press. This book was released on 2014-12-01 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: Blending fuels with hydrogen offers the potential to reduce NOx and CO2 emissions in gas turbines, but doing so introduces potential new problems such as flashback. Flashback can lead to thermal overload and destruction of hardware in the turbine engine, with potentially expensive consequences. The little research on flashback that is available is fragmented. Flashback Mechanisms in Lean Premixed Gas Turbine Combustion by Ali Cemal Benim will address not only the overall issue of the flashback phenomenon, but also the issue of fragmented and incomplete research. Presents a coherent review of flame flashback (a classic problem in premixed combustion) and its connection with the growing trend of popularity of more-efficient hydrogen-blend fuels Begins with a brief review of industrial gas turbine combustion technology Covers current environmental and economic motivations for replacing natural gas with hydrogen-blend fuels
Download or read book Gas Turbines for Electric Power Generation written by S. Can Gülen and published by Cambridge University Press. This book was released on 2019-02-14 with total page 735 pages. Available in PDF, EPUB and Kindle. Book excerpt: Everything you wanted to know about industrial gas turbines for electric power generation in one source with hard-to-find, hands-on technical information.
Download or read book Turbojet Combustor Performance with Injection of Hydrogen Peroxide for Thrust Augmentation written by Allen J. Metzler and published by . This book was released on 1956 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis Gas Combustion written by Tim Lieuwen and published by CRC Press. This book was released on 2009-09-16 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coal, still used to generate more than half of the electric power in the U.S., will likely be part of any future global energy plan. But this finite resource is also responsible for 80 percent of the CO2 emissions from power production, and its continued use will require improved processing techniques that are less damaging to the environment and l
Download or read book Turbulent Premixed Flames written by Nedunchezhian Swaminathan and published by Cambridge University Press. This book was released on 2011-04-25 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: A work on turbulent premixed combustion is important because of increased concern about the environmental impact of combustion and the search for new combustion concepts and technologies. An improved understanding of lean fuel turbulent premixed flames must play a central role in the fundamental science of these new concepts. Lean premixed flames have the potential to offer ultra-low emission levels, but they are notoriously susceptible to combustion oscillations. Thus, sophisticated control measures are inevitably required. The editors' intent is to set out the modeling aspects in the field of turbulent premixed combustion. Good progress has been made on this topic, and this cohesive volume contains contributions from international experts on various subtopics of the lean premixed flame problem.
Download or read book Gas Turbine Emissions written by Timothy C. Lieuwen and published by Cambridge University Press. This book was released on 2013-07-08 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of clean, sustainable energy systems is a preeminent issue in our time. Gas turbines will continue to be important combustion-based energy conversion devices for many decades to come, used for aircraft propulsion, ground-based power generation, and mechanical-drive applications. This book compiles the key scientific and technological knowledge associated with gas turbine emissions into a single authoritative source.
Download or read book Emissions and Stability of Gas Turbine Combustors with Rapid Fuel and Air Mixing written by Naman Ahmad Al-Dabbagh and published by . This book was released on 1982 with total page 1034 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technology and Uses of Liquid Hydrogen written by R. B. Scott and published by Elsevier. This book was released on 2013-10-22 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technology and Uses of Liquid Hydrogen deals with the technological aspects and applications of liquid hydrogen. Topics covered include the process of producing hydrogen gas for liquefaction; thermal insulation, storage, transportation, and transfer of liquid hydrogen; liquid hydrogen engines and bubble chambers; and safety in the use of liquid hydrogen. The uses of liquid hydrogen for the production of cold neutrons inside a nuclear reactor are also discussed. This book is comprised of 11 chapters and begins with a little background, history, and statistics on the technology and uses of liquid hydrogen, followed by a review of commercially feasible processes for the production of of liquid hydrogen. The reader is then introduced to the basic principles of the liquefaction of hydrogen; hydrogen liquefiers of moderate size; the use of liquid hydrogen as a coolant/propellant for nuclear rockets; and separation of deuterium by the large-scale distillation of liquid hydrogen. Subsequent chapters explore liquid hydrogen engines and bubble chambers; safety considerations in the use of liquid hydrogen; and properties of normal and para-hydrogen. This monograph will be of interest to chemists.
Download or read book Energy Conversion Ideal vs Real Operation Technical Background written by Engineering Software and published by Engineering Software. This book was released on with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: The simple and basic power cycles (Brayton Cycle, Otto Cycle and Diesel Cycle), power cycle components/processes (compression, combustion and expansion) and compressible flow components (nozzle, diffuser and thrust) are presented in this technical background material. In the presented power cycles, power cycle components/process and compressible flow components analysis, air is used as the working fluid. For each power cycle, the thermal efficiency derivation is presented with a simple mathematical approach. Also, for each power cycle, a T - s diagram and cycle major performance trends (thermal efficiency, specific power output and power output) are plotted in a few figures as a function of compression ratio, turbine inlet temperature and/or final combustion temperature, working fluid mass flow rate and both isentropic compression and expansion efficiency. It should be noted that this course material does not deal with costs (capital, operational or maintenance). For compression and expansion, the technical performance of mentioned power cycle components/processes for ideal and real operation is presented with a given relationship between pressure and temperature and compression and expansion efficiency. Complete combustion at constant pressure with and without heat loss is presented. Six different fuels (carbon, hydrogen, sulfur, coal, oil and gas) react with air as the oxidant at different stoichiometry values (stoichiometry => 1) and oxidant inlet temperature values. Reactants and combustion products enthalpy values change with an increase in the temperature and such enthalpy values are presented in a plot where one can notice fuel higher heating value (HHV) and flame temperature definitions. Physical properties of basic combustion reactants and products are presented in an enthalpy vs temperature plot. The combustion technical performance at stoichiometry => 1 conditions is presented knowing the enthalpy values for combustion reactants and products, given as a function of temperature. Combustion products composition on both weight and mole basis is given in tabular form and plotted in a few figures. Also, flame temperature, oxidant to fuel ratio and fuel higher heating value (HHV) are presented in tabular form and plotted in a few figures. The provided output data and plots allow one to determine the major combustion performance laws and trends. The technical performance of compressible flow components (subsonic nozzle, diffuser and thrust) is presented with a given relationship between temperature and pressure as a function of the Mach Number and isentropic nozzle and diffuser efficiency. The compressible flow components T - s diagrams and their major performance trends (stagnation over static temperature and pressure ratio values) are plotted in a few figures as a function of the Mach Number. In this technical background material, one gets familiar with the simple and basic power cycles and power cycle components/processes, compressible flow components and their T - s and h - T diagrams, ideal vs real operation and major performance trends.
Download or read book Gas Turbine Engineering Handbook written by Meherwan P. Boyce and published by Elsevier. This book was released on 2017-09-01 with total page 956 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Gas Turbine Engineering Handbook has been the standard for engineers involved in the design, selection, and operation of gas turbines. This revision includes new case histories, the latest techniques, and new designs to comply with recently passed legislation. By keeping the book up to date with new, emerging topics, Boyce ensures that this book will remain the standard and most widely used book in this field. The new Third Edition of the Gas Turbine Engineering Hand Book updates the book to cover the new generation of Advanced gas Turbines. It examines the benefit and some of the major problems that have been encountered by these new turbines. The book keeps abreast of the environmental changes and the industries answer to these new regulations. A new chapter on case histories has been added to enable the engineer in the field to keep abreast of problems that are being encountered and the solutions that have resulted in solving them. Comprehensive treatment of Gas Turbines from Design to Operation and Maintenance. In depth treatment of Compressors with emphasis on surge, rotating stall, and choke; Combustors with emphasis on Dry Low NOx Combustors; and Turbines with emphasis on Metallurgy and new cooling schemes. An excellent introductory book for the student and field engineers A special maintenance section dealing with the advanced gas turbines, and special diagnostic charts have been provided that will enable the reader to troubleshoot problems he encounters in the field The third edition consists of many Case Histories of Gas Turbine problems. This should enable the field engineer to avoid some of these same generic problems
Download or read book Computer Program for Calculation of Complex Chemical Equilibrium Compositions and Applications written by Bonnie J. McBride and published by . This book was released on 1996 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Tech Briefs written by and published by . This book was released on 1981 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Combustion Instabilities in Gas Turbine Engines written by Timothy C. Lieuwen and published by AIAA (American Institute of Aeronautics & Astronautics). This book was released on 2005 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers gas turbine users and manufacturers a valuable resource to help them sort through issues associated with combustion instabilities. In the last ten years, substantial efforts have been made in the industrial, governmental, and academic communities to understand the unique issues associated with combustion instabilities in low-emission gas turbines. The objective of this book is to compile these results into a series of chapters that address the various facets of the problem. The Case Studies section speaks to specific manufacturer and user experiences with combustion instabilities in the development stage and in fielded turbine engines. The book then goes on to examine The Fundamental Mechanisms, The Combustor Modeling, and Control Approaches.
Download or read book Gas Turbine Combustion written by Arthur H. Lefebvre and published by CRC Press. This book was released on 2010-04-26 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reflecting the developments in gas turbine combustion technology that have occurred in the last decade, Gas Turbine Combustion: Alternative Fuels and Emissions, Third Edition provides an up-to-date design manual and research reference on the design, manufacture, and operation of gas turbine combustors in applications ranging from aeronautical to po
Download or read book An Introduction to Energy Conversion written by V. Kadambi and published by New Age International. This book was released on 1974 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
