High-pressure Low-temperature Combustion Chemistry

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Publisher :
ISBN 13 :
Total Pages : 1 pages
Book Rating : 4.:/5 (16 download)

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Book Synopsis High-pressure Low-temperature Combustion Chemistry by :

Download or read book High-pressure Low-temperature Combustion Chemistry written by and published by . This book was released on 2012 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Low-temperature Combustion and Autoignition

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Publisher : Elsevier
ISBN 13 : 0080535658
Total Pages : 823 pages
Book Rating : 4.0/5 (85 download)

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Book Synopsis Low-temperature Combustion and Autoignition by : M.J. Pilling

Download or read book Low-temperature Combustion and Autoignition written by M.J. Pilling and published by Elsevier. This book was released on 1997-11-27 with total page 823 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combustion has played a central role in the development of our civilization which it maintains today as its predominant source of energy. The aim of this book is to provide an understanding of both fundamental and applied aspects of low-temperature combustion chemistry and autoignition. The topic is rooted in classical observational science and has grown, through an increasing understanding of the linkage of the phenomenology to coupled chemical reactions, to quite profound advances in the chemical kinetics of both complex and elementary reactions. The driving force has been both the intrinsic interest of an old and intriguing phenomenon and the centrality of its applications to our economic prosperity. The volume provides a coherent view of the subject while, at the same time, each chapter is self-contained.

Combustion Chemistry and the Carbon Neutral Future

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Publisher : Elsevier
ISBN 13 : 0323993109
Total Pages : 666 pages
Book Rating : 4.3/5 (239 download)

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Book Synopsis Combustion Chemistry and the Carbon Neutral Future by : Kenneth Brezinsky

Download or read book Combustion Chemistry and the Carbon Neutral Future written by Kenneth Brezinsky and published by Elsevier. This book was released on 2023-02-16 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the demands for cleaner, more efficient, reduced and zero carbon emitting transportation increase, the traditional focus of Combustion Chemistry research is stretching and adapting to help provide solutions to these contemporary issues. Combustion Chemistry and the Carbon Neutral Future: What will the Next 25 Years of Research Require? presents a guide to current research in the field and an exploration of possible future steps as we move towards cleaner, greener and reduced carbon combustion chemistry. Beginning with a discussion of engine emissions and soot, the book goes on to discuss a range of alternative fuels, including hydrogen, ammonia, small alcohols and other bio-oxygenates, natural gas, syngas and synthesized hydrocarbon fuels. Methods for predicting and improving efficiency and sustainability, such as low temperature and catalytic combustion, chemical looping, supercritical fluid combustion, and diagnostic monitoring even at high pressure, are then explored. Some novel aspects of biomass derived aviation fuels and combustion synthesis are also covered. Combining the knowledge and experience of an interdisciplinary team of experts in the field, Combustion Chemistry and the Carbon Neutral Future: What will the Next 25 Years of Research Require? is an insightful guide to current and future focus areas for combustion chemistry researchers in line with the transition to greener, cleaner technologies. Provides insight on current developments in combustion chemistry as a tool for supporting a reduced-carbon future Reviews modeling and diagnostic tools, in addition to key approaches and alternative fuels Includes projections for the future from leaders in the field, pointing current and prospective researchers to potentially fruitful areas for exploration

Ignition Delay at Various High Pressures. An Experimental Study

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Publisher : GRIN Verlag
ISBN 13 : 3346061124
Total Pages : 22 pages
Book Rating : 4.3/5 (46 download)

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Book Synopsis Ignition Delay at Various High Pressures. An Experimental Study by : Ritu Gaur

Download or read book Ignition Delay at Various High Pressures. An Experimental Study written by Ritu Gaur and published by GRIN Verlag. This book was released on 2019-11-13 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research Paper (postgraduate) from the year 2019 in the subject Engineering - Chemical Engineering, , course: M.TECH, language: English, abstract: This work is an experimental study for the measurement of ignition delay characteristics of burning fuel sprays in cylindrical combustion chambers. It is carried out on hot air and high pressure. The objective of the study is to investigation the effect of hot air temperature and a well as high pressure on ignition delay of diesel fuel sprays. The effect of blending of n-Pentane with pure diesel was investigated. An experimental set up was design for this purpose with the emphasis on optical method for measurement of ignition delay at various pressures. The results presented here show that ignition delay of diesel fuel spray decreases with increase in the temperature and pressure of hot air. Results also show the effect of methyl group being more dominant at low ignition temperatures and that of alkyl group being more dominant at higher temperature. Blending of n-pentane with diesel fuel, increase its ignition delay at low ignition temperatures. However, as the concentration of blending fuel was increased beyond 30%, the ignition temperature increase. Ignition temperature for 40% pentane blends is much higher that the pure diesel.

Gas-Phase Combustion Chemistry

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Publisher : Springer Science & Business Media
ISBN 13 : 146121310X
Total Pages : 553 pages
Book Rating : 4.4/5 (612 download)

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Book Synopsis Gas-Phase Combustion Chemistry by : W.C., Jr. Gardiner

Download or read book Gas-Phase Combustion Chemistry written by W.C., Jr. Gardiner and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 553 pages. Available in PDF, EPUB and Kindle. Book excerpt: Superseding Gardiner's "Combustion Chemistry", this is an updated, comprehensive coverage of those aspects of combustion chemistry relevant to gas-phase combustion of hydrocarbons. The book includes an extended discussion of air pollutant chemistry and aspects of combustion, and reviews elementary reactions of nitrogen, sulfur and chlorine compounds that are relevant to combustion. Methods of combustion modeling and rate coefficient estimation are presented, as well as access to databases for combustion thermochemistry and modeling.

Ignition Behavior of Gasolines and Surrogate Fuels in Low Temperature Combustion Strategies

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (927 download)

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Book Synopsis Ignition Behavior of Gasolines and Surrogate Fuels in Low Temperature Combustion Strategies by : Vickey Kalaskar

Download or read book Ignition Behavior of Gasolines and Surrogate Fuels in Low Temperature Combustion Strategies written by Vickey Kalaskar and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation discusses the results from three different studies aimed at understanding the importance of fuel chemical structure during low temperature combustion (LTC) strategies, like homogeneous charge compression ignition (HCCI) and partially premixed combustion (PPC) employed in internal combustion (IC) engines wherein the focus is on high octane fuels. Boosted intake air operation combined with exhaust gas recirculation, internal as well as external, has become a standard path for expanding the load limits of IC engines employing LTC strategies mentioned above as well as conventional diesel and spark ignition (SI) engines. However, the effects of fuel compositional variation have not been fully explored. The first study focusses on three different fuels, where each of them were evaluated using a single cylinder boosted HCCI engine using negative valve overlap. The three fuels investigated were: a regular grade gasoline (RON = 90.2), 30% ethanol-gasoline blend (E30, RON = 100.3), and 24% iso-butanol-gasoline blend (IB24, RON = 96.6). Detailed sweeps of intake manifold pressure (atmospheric to 250 kPaa), EGR (0 -- 25% EGR), and injection timing were conducted to identify fuel-specific effects. While significant fuel compositional differences existed, the results showed that all these fuels achieved comparable operation with minor changes in operational conditions. Further, it was shown that the available enthalpy from the exhaust would not be sufficient to satisfy the boost requirements at higher load operation by doing an analysis of the required turbocharger efficiency. While the first study concentrated on load expansion of HCCI, it is important to mention that controlling LTC strategies is difficult under low load or idle operating conditions. To ensure stable operation, fuel injection in the negative valve overlap (NVO) is used as one of method of achieving combustion control. However the combustion chemistry under high temperature and fuel rich conditions that exist during the NVO have not been previously explored. The second study focused on examining the products of fuel rich chemistry as a result of fuel injection in the NVO. In this study, a unique six stroke cycle was used to segregate the exhaust from the NVO and to study the chemistry of the range of fuels injected during NVO under low oxygen conditions. The fuels investigated were methanol, ethanol, iso-butanol, and iso-octane. It was observed that the products of reactions under NVO conditions were highly dependent on the injected fuel's structure with iso-octane producing less than 1.5% hydrogen and methanol producing more than 8%. However a weak dependence was observed on NVO duration and initial temperature, indicating that NVO reforming was kinetically limited. Finally, the experimental trends were compared with CHEMKIN (single zone, 0-D model) predictions using multiple kinetic mechanism that were readily available through literature. Due to the simplicity of the model and inadequate information on the fuel injection process, the experimental data was not modeled well with the mechanisms tested. Some of the shortcomings of the 0-D model were probably due to the model ignoring temperature and composition spatial inhomogeneities and evaporative cooling from fuel vaporization.Though the results from the NVO injection and boosted NVO-HCCI studies are enlightening, the fundamentals of the autoignition behavior of gasoline, alcohols, and their mixtures are not entirely understood despite the interest in high octane fuels in compression engines from a point of view of better thermal efficiency. The third study focused on higher octane blends consisting of binary and ternary mixtures of n-heptane and/or iso-octane, and a fuel of interest. These fuels of interest were toluene, ethanol, and iso-butanol. In this study, the autoignition of such blends is studied under lean conditions ([phi] = 0.25) with varying intake pressure (atmospheric to 3 bar, abs) and at a constant intake temperature of 155 °C. The blends consisted of varying percentages of fuels of interest and their research octane number (RON) approximately estimated at 100 and 80. For comparison, neat iso-octane was selected as RON 100 fuel and PRF 80 blend was selected as RON 80 fuel. It was observed that the blends with a higher percentage of n-heptane showed a stronger tendency to autoignite at lower intake pressures. However, as the intake pressure was increased, the non-reactive components, in this case, the higher octane blend components (toluene, ethanol, and iso-butanol), reduced this tendency subsequently delaying the critical compression ratio (CCR) of the blends. The heat release analysis revealed that the higher octane components in the blends reduced the low temperature reactivity of n-heptane and iso-octane. GC-MS and GC-FID analysis of the partially compressed fuel also indicated that the higher octane components did affect the conversion of the more reactive components, n-heptane and iso-octane, into their partially oxidized branched hydrocarbons in the binary/ternary blends, and reduced the overall reactivity which resulted in a delayed CCR at higher intake pressures.

Some Problems of Chemical Kinetics and Reactivity

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Publisher : Elsevier
ISBN 13 : 1483194957
Total Pages : 316 pages
Book Rating : 4.4/5 (831 download)

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Book Synopsis Some Problems of Chemical Kinetics and Reactivity by : N. N. Semenov

Download or read book Some Problems of Chemical Kinetics and Reactivity written by N. N. Semenov and published by Elsevier. This book was released on 2013-10-22 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Some Problems of Chemical Kinetics and Reactivity, Volume 1 consists of calculations on radical and radical chain reactions. The subject bond dissociation energies are fully discussed. The concept of uniradical reactivities is comprehensively explained. Isomerizations are a class of radical reactions in which the free valency takes another bond in the same radical. The text provides sample of experiments on the subject. The book contains a section on polar factors in organic reactions. Polymerizations are another concept covered in the book. Subjects such as the reactions of biradicals, the start and end of a chain reaction, and ions of variable valency are explained. A separate chapter of the book focuses on the kinetics of chain reactions. The cracking of hydrocarbons such as the alkane is analyzed in detail. The oxidation of hydrocarbons is another topic explained in the book. The text will provide excellent insight for chemists, students, and researchers in the field of chemistry.

Combustion Chemistry

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Publisher : Springer Science & Business Media
ISBN 13 : 1468401866
Total Pages : 515 pages
Book Rating : 4.4/5 (684 download)

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Book Synopsis Combustion Chemistry by : W. C. Jr. Gardiner

Download or read book Combustion Chemistry written by W. C. Jr. Gardiner and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 515 pages. Available in PDF, EPUB and Kindle. Book excerpt: Detailed study of the rates and mechanisms of combustion reactions has not been in the mainstream of combustion research until the recent recognition that further progress in optimizing burner performance and reducing pollutant emission can only be done with fundamental understanding of combustion chemistry. This has become apparent at a time when our understanding of the chemistry, at least of small-molecule combustion, and our ability to model combustion processes on large computers have developed to the point that real confidence can be placed in the results. This book is an introduction for outsiders or beginners as well as a reference work for people already active in the field. Because the spectrum of combustion scientists ranges from chemists with little computing experience to engineers who have had only one college chemistry course, everything needed to bring all kinds of beginners up to the level of current practice in detailed combustion modeling is included. It was a temptation to include critical discussions of modeling results and computer programs that would enable outsiders to start quickly into problem solving. We elected not to do either, because we feel that the former are better put into the primary research literature and that people who are going to do combustion modeling should either write their own programs or collaborate with experts. The only exception to this is in the thermochemical area, where programs have been included to do routine fitting operations. For reference purposes there are tables of thermochemical, transport-property, and rate coefficient data.

Low-temperature Combustion and Autoignition

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Publisher :
ISBN 13 : 9780444416315
Total Pages : 0 pages
Book Rating : 4.4/5 (163 download)

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Book Synopsis Low-temperature Combustion and Autoignition by :

Download or read book Low-temperature Combustion and Autoignition written by and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Characteristics and Control of Low Temperature Combustion Engines

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Publisher : Springer
ISBN 13 : 3319685082
Total Pages : 553 pages
Book Rating : 4.3/5 (196 download)

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Book Synopsis Characteristics and Control of Low Temperature Combustion Engines by : Rakesh Kumar Maurya

Download or read book Characteristics and Control of Low Temperature Combustion Engines written by Rakesh Kumar Maurya and published by Springer. This book was released on 2017-11-03 with total page 553 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with novel advanced engine combustion technologies having potential of high fuel conversion efficiency along with ultralow NOx and particulate matter (PM) emissions. It offers insight into advanced combustion modes for efficient utilization of gasoline like fuels. Fundamentals of various advanced low temperature combustion (LTC) systems such as HCCI, PCCI, PPC and RCCI engines and their fuel quality requirements are also discussed. Detailed performance, combustion and emissions characteristics of futuristic engine technologies such as PPC and RCCI employing conventional as well as alternative fuels are analyzed and discussed. Special emphasis is placed on soot particle number emission characterization, high load limiting constraints, and fuel effects on combustion characteristics in LTC engines. For closed loop combustion control of LTC engines, sensors, actuators and control strategies are also discussed. The book should prove useful to a broad audience, including graduate students, researchers, and professionals Offers novel technologies for improved and efficient utilization of gasoline like fuels; Deals with most advanced and futuristic engine combustion modes such as PPC and RCCI; Comprehensible presentation of the performance, combustion and emissions characteristics of low temperature combustion (LTC) engines; Deals with closed loop combustion control of advanced LTC engines; State-of-the-art technology book that concisely summarizes the recent advancements in LTC technology. .

Chemistry of Hydrocarbon Combustion

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Publisher : Springer Science & Business Media
ISBN 13 : 9400948522
Total Pages : 423 pages
Book Rating : 4.4/5 (9 download)

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Book Synopsis Chemistry of Hydrocarbon Combustion by : David. Hucknall

Download or read book Chemistry of Hydrocarbon Combustion written by David. Hucknall and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: The scientific and economic importance of the high-temperature reactions of hydrocarbons in both the presence and absence of oxygen cannot be overemphasized. A vast chemical industry exists based on feedstocks produced by the controlled pyrolysis of hydrocarbons, while uncontrolled combustion in air is still among the most important sources of heat and mechanical energy. The detonation and explosion of hydrocarbon-oxidant mixtures can however, be a highly dangerous phenomenon which destroys lives and equipment. In order that control can be exerted over combustion processes, a complete description of hydrocarbon oxidation and pyrolysis is required. A major contribution to this is an understanding of the unstable intermediates involved and their reactions. The aim of this book is to review our knowledge of the chemistry of hydrocarbon combustion and to consider the data which are available for relevant reactions. Chapter 1 describes early studies in which the apparent complexity of the chemistry was established and the type of information required for a better understanding was defined. Experimental studies of the overall process which were carried out with the aim of establishing the sequence of stable chemical intermediates and some of the unstable species are described in Chapter 2. The limited nature of the information thus obtained showed that independent studies of individual reactions involving the unstable species were required. In Chapter 3 investigations specifically aimed at the determination of the kinetics of elementary reactions are discussed.

Illuminating Reaction Pathways in Low-temperature Combustion, Pyrolysis & Atmospheric Oxidation

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Publisher :
ISBN 13 :
Total Pages : 251 pages
Book Rating : 4.:/5 (129 download)

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Book Synopsis Illuminating Reaction Pathways in Low-temperature Combustion, Pyrolysis & Atmospheric Oxidation by : Mark Jacob Goldman

Download or read book Illuminating Reaction Pathways in Low-temperature Combustion, Pyrolysis & Atmospheric Oxidation written by Mark Jacob Goldman and published by . This book was released on 2020 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reaction mechanisms are key to developing many technologies that could aid in addressing climate change. Evaluating how emissions transform in the atmosphere, obtaining more efficient combustion engines, and finding a way to store transient renewable energy all rely on accurate chemical mechanisms. This thesis spans this space by refining basic reaction rate theories, combining information and techniques from various fields to advance knowledge about atmospheric and combustion chemistry, and developing computational tools to model pyrolysis for isotopic analysis. Having a solid foundation for reaction kinetics is necessary to get accurate kinetic rates. The first chapter corrects a longstanding issue in transition state theory by determining the proper symmetry in reactions with identical reactants and estimating the error from taking incorrect approach. The next chapter then applies transition state theory to develop high pressure limit and pressure-dependent kinetics for peroxy radicals from isobutanol, a potential bio-derived fuel. To fully understand the behavior of oxygenated bio-based fuels, this thesis utilizes these isobutanol rate coefficients along with other estimated and measured rate coefficients to examine how peroxy radicals react across a range of temperatures, pressures, functional groups, and NO concentrations. This wide perspective elucidates why certain conditions cause pathways in combustion chemistry to start impacting atmospheric systems and vise versa. Peroxy reactions in the condensed phase also matter, so the subsequent chapter addresses this by developing a more accurate framework to simulate oxidation of small particles in the atmosphere. Both of these chapters help improve predictions on how changing emissions impacts the environment. The final chapter of this thesis describes the creation of a tool to help assess the origin of volatile fuels by applying combustion-based automatic mechanism generation in order to help measure the exact isotopic positions within molecules. Overall, these projects solve pieces of a larger climate problem which will require, among other things, large-scale technological, political, and social changes.

Cold Chemistry

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Publisher : Royal Society of Chemistry
ISBN 13 : 1788013557
Total Pages : 692 pages
Book Rating : 4.7/5 (88 download)

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Book Synopsis Cold Chemistry by : Olivier Dulieu

Download or read book Cold Chemistry written by Olivier Dulieu and published by Royal Society of Chemistry. This book was released on 2017-12-06 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent years have seen tremendous progress in research on cold and controlled molecular collisions, both in theory and in experiment. The advent of techniques to prepare cold and ultracold molecules and ions, to store them in optical lattices or in charged quasicristalline structures, and to use them in crossed or merged beam experiments have opened many new possibilities to study the most fundamental aspects of molecular interactions. At the same time, theoretical work has made progress in tackling these problems and accurately describing quantum effects in complex systems, and in proposing viable options to control chemical reactions at ultralow energies. Through tutorials on both the theoretical and experimental aspects of research in cold and ultracold molecular collisions, this book provides advanced undergraduate students, graduate students and researchers with the foundations needed to understand this exciting field.

Introduction to Physics and Chemistry of Combustion

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Publisher : Springer Science & Business Media
ISBN 13 : 3540787593
Total Pages : 368 pages
Book Rating : 4.5/5 (47 download)

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Book Synopsis Introduction to Physics and Chemistry of Combustion by : Michael A. Liberman

Download or read book Introduction to Physics and Chemistry of Combustion written by Michael A. Liberman and published by Springer Science & Business Media. This book was released on 2010-03-14 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most of the material covered in this book deals with the fundamentals of chemistry and physics of key processes and fundamental mechanisms for various combustion and combustion related phenomena in gaseous combustible mixture. It provides the reader with basic knowledge of burning processes and mechanisms of reaction wave propagation. The combustion of a gas mixture (flame, explosion, detonation) is necessarily accompanied by motion of the gas. The process of combustion is therefore not only a chemical phenomenon but also one of gas dynamics. The material selection focuses on the gas phase and with premixed gas combustion. Premixed gas combustion is of practical importance in engines, modern gas turbine and explosions, where the fuel and air are essentially premixed, and combustion occurs by the propagation of a front separating unburned mixture from fully burned mixture. Since premixed combustion is the most fundamental and potential for practical applications, the emphasis in the present work is be placed on regimes of premixed combustion. This text is intended for graduate students of different specialties, including physics, chemistry, mechanical engineering, computer science, mathematics and astrophysics.

Final Report - Low Temperature Combustion Chemistry And Fuel Component Interactions

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Publisher :
ISBN 13 :
Total Pages : 128 pages
Book Rating : 4.:/5 (982 download)

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Book Synopsis Final Report - Low Temperature Combustion Chemistry And Fuel Component Interactions by :

Download or read book Final Report - Low Temperature Combustion Chemistry And Fuel Component Interactions written by and published by . This book was released on 2017 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent research into combustion chemistry has shown that reactions at "low temperatures" (700 - 1100 K) have a dramatic influence on ignition and combustion of fuels in virtually every practical combustion system. A powerful class of laboratory-scale experimental facilities that can focus on fuel chemistry in this temperature range is the rapid compression facility (RCF), which has proven to be a versatile tool to examine the details of fuel chemistry in this important regime. An RCF was used in this project to advance our understanding of low temperature chemistry of important fuel compounds. We show how factors including fuel molecular structure, the presence of unsaturated C=C bonds, and the presence of alkyl ester groups influence fuel auto-ignition and produce variable amounts of negative temperature coefficient behavior of fuel ignition. We report new discoveries of synergistic ignition interactions between alkane and alcohol fuels, with both experimental and kinetic modeling studies of these complex interactions. The results of this project quantify the effects of molecular structure on combustion chemistry including carbon bond saturation, through low temperature experimental studies of esters, alkanes, alkenes, and alcohols.

Cleaner Combustion

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Publisher : Springer Science & Business Media
ISBN 13 : 1447153073
Total Pages : 657 pages
Book Rating : 4.4/5 (471 download)

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Book Synopsis Cleaner Combustion by : Frédérique Battin-Leclerc

Download or read book Cleaner Combustion written by Frédérique Battin-Leclerc and published by Springer Science & Business Media. This book was released on 2013-09-06 with total page 657 pages. Available in PDF, EPUB and Kindle. Book excerpt: This overview compiles the on-going research in Europe to enlarge and deepen the understanding of the reaction mechanisms and pathways associated with the combustion of an increased range of fuels. Focus is given to the formation of a large number of hazardous minor pollutants and the inability of current combustion models to predict the formation of minor products such as alkenes, dienes, aromatics, aldehydes and soot nano-particles which have a deleterious impact on both the environment and on human health. Cleaner Combustion describes, at a fundamental level, the reactive chemistry of minor pollutants within extensively validated detailed mechanisms for traditional fuels, but also innovative surrogates, describing the complex chemistry of new environmentally important bio-fuels. Divided into five sections, a broad yet detailed coverage of related research is provided. Beginning with the development of detailed kinetic mechanisms, chapters go on to explore techniques to obtain reliable experimental data, soot and polycyclic aromatic hydrocarbons, mechanism reduction and uncertainty analysis, and elementary reactions. This comprehensive coverage of current research provides a solid foundation for researchers, managers, policy makers and industry operators working in or developing this innovative and globally relevant field.

Experimental and Theoretical Investigation of Low-Temperature Ignition in a Laminar Flow Reactor

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Publisher : Cuvillier Verlag
ISBN 13 : 3736939302
Total Pages : 224 pages
Book Rating : 4.7/5 (369 download)

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Book Synopsis Experimental and Theoretical Investigation of Low-Temperature Ignition in a Laminar Flow Reactor by : Tomoya Wada

Download or read book Experimental and Theoretical Investigation of Low-Temperature Ignition in a Laminar Flow Reactor written by Tomoya Wada and published by Cuvillier Verlag. This book was released on 2011-11-29 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main purpose of this dissertation is to investigate low-temperature ignition in detail. In the previous findings with conventional fuels such as diesel, gasoline, or jet fuels, first- and second-stage ignitions are observed in the negative temperature coefficient regime due to high- and low-temperature chemistry (LTC and HTC). As results from these investigations have shown, it is well-known that this temperature regime has high potential to reduce emission in applications. In general, these ignitions are observed sequentially (i.e., two ignition processes are observed as the overall-ignition). On the other hand, the importance of first-stage ignition due to low-temperature chemistry has been noted as one of the dominant phenomena in the overall-ignition process. In order to observe the ignition at low temperatures, a laminar flow reactor (LFR) has been developed. This LFR allows the experimental observations of only low-temperature ignition (i.e., first-stage ignition (FSI)). In other words, LFR extracts only FSI from the overall-ignition process. N-heptane, dimethyl ether and their mixtures are chosen as fuels. The entire LFR remains at isothermal conditions. Temperature increase due to the FSI in LFR and the products from FSI are experimentally measured. Numerical calculations are conducted to simulate the experiments. Based on the experimentally and numerically determined results theoretical models are established. Combustion and flame http://www.journals.elsevier.com/combustion-and-flame//a Combustion Science and Technology http://www.tandf.co.uk/journals/titles/00102202.html Combustion Theory and Modeling http://www.tandf.co.uk/journals/titles/13647830.asp Journal of combustion http://www.hindawi.com/journals/jc//a International Journal of Chemical Kinetics http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1097-4601 Proceedings of Combustion Institute http://www.journals.elsevier.com/proceedings-of-the-combustion-institute//a