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Author : Jian Ping Fan
Publisher :
Page : 226 pages
File Size : 12,30 MB
Release : 2003
Category : Fuel cells
ISBN :
Author : Mahdi Sharifzadeh
Publisher : Academic Press
Page : 648 pages
File Size : 12,34 MB
Release : 2019-10-31
Category : Science
ISBN : 0128154292
Design and Operation of Solid Oxide Fuel Cells: The Systems Engineering Vision for Industrial Application presents a comprehensive, critical and accessible review of the latest research in the field of solid oxide fuel cells (SOFCs). As well as discussing the theoretical aspects of the field, the book explores a diverse range of power applications, such as hybrid power plants, polygeneration, distributed electricity generation, energy storage and waste management—all with a focus on modeling and computational skills. Dr. Sharifzadeh presents the associated risks and limitations throughout the discussion, providing a very complete and thorough analysis of SOFCs and their control and operation in power plants. The first of its kind, this book will be of particular interest to energy engineers, industry experts and academic researchers in the energy, power and transportation industries, as well as those working and researching in the chemical, environmental and material sectors. Closes the gap between various power engineering disciples by considering a diverse variety of applications and sectors Presents and reviews a variety of modeling techniques and considers regulations throughout Includes CFD modeling examples and process simulation and optimization programming guidance
Author : Kevin Kendall
Publisher : Elsevier
Page : 522 pages
File Size : 25,53 MB
Release : 2015-11-21
Category : Technology & Engineering
ISBN : 0124104835
High-temperature Solid Oxide Fuel Cells, Second Edition, explores the growing interest in fuel cells as a sustainable source of energy. The text brings the topic of green energy front and center, illustrating the need for new books that provide comprehensive and practical information on specific types of fuel cells and their applications. This landmark volume on solid oxide fuel cells contains contributions from experts of international repute, and provides a single source of the latest knowledge on this topic. A single source for all the latest information on solid oxide fuel cells and their applications Illustrates the need for new, more comprehensive books and study on the topic Explores the growing interest in fuel cells as viable, sustainable sources of energy
Author :
Publisher : Academic Press
Page : 481 pages
File Size : 31,86 MB
Release : 2012-08-14
Category : Technology & Engineering
ISBN : 0123868750
Fuel cells are attractive electrochemical energy converters featuring potentially very high thermodynamic efficiency factors. The focus of this volume of Advances in Chemical Engineering is on quantitative approaches, particularly based on chemical engineering principles, to analyze, control and optimize the steady state and dynamic behavior of low and high temperature fuel cells (PEMFC, DMFC, SOFC) to be applied in mobile and stationary systems. Updates and informs the reader on the latest research findings using original reviews Written by leading industry experts and scholars Reviews and analyzes developments in the field
Author : Patrick Alain Louka
Publisher :
Page : pages
File Size : 39,39 MB
Release : 2007
Category : Coanda effect
ISBN :
The ultimate objective of this research is to investigate the effectiveness of cathode gas (air) recirculation for the thermal management of a solid oxide fuel cell (SOFC) stack. SOFCs conventionally operate at high temperatures (>600o C); and recovering heat from stack exhaust is critical to improving the stack and system performance. Prevalent approaches implement bulky and expensive high temperature gas-to-gas heat exchangers. Also, ejectors are being investigated for recirculation of the air; however, an ejector with typically large velocity gradients would incur large viscous losses. An alternative recirculation approach is being developed for distributed entrainment via active flow control. The entrainment would allow recuperative thermal mixing to occur that may be more effective than the preceding two approaches. The ultimate goal of this research thrust is to reduce, or even exclude, the need of an air preheater in a SOFC system. The cathode air preheat contributes to a large portion of the cost of a SOFC system. Verifying and demonstrating the efficacy of the Coandă; effect has been the initial focus, and positive results have been demonstrated in a test environment from a fluid mechanics standpoint. This has been based upon three stages of experimental development, inclusive of cross-sectional area and activated blowing degrees-of-freedom. Seed thermal testing of the system has demonstrated legitimate thermal mixing capabilities. EES thermodynamic modeling developments confirm that the approach can reduce or even exclude the air preheat. It is concluded that recuperative thermal mixing with this recirculation approach is indeed feasible and has the potential to greatly reduce the cost and efficiency of the SOFC system.
Author : S.C. Singhal
Publisher : Elsevier
Page : 423 pages
File Size : 21,11 MB
Release : 2003-12-08
Category : Technology & Engineering
ISBN : 0080508081
High Temperature Solid Oxide Fuel Cells: Fundamentals, Design and Applications provides a comprehensive discussion of solid oxide fuel cells (SOFCs). SOFCs are the most efficient devices for the electrochemical conversion of chemical energy of hydrocarbon fuels into electricity, and have been gaining increasing attention for clean and efficient distributed power generation. The book explains the operating principle, cell component materials, cell and stack designs and fabrication processes, cell and stack performance, and applications of SOFCs. Individual chapters are written by internationally renowned authors in their respective fields, and the text is supplemented by a large number of references for further information. The book is primarily intended for use by researchers, engineers, and other technical people working in the field of SOFCs. Even though the technology is advancing at a very rapid pace, the information contained in most of the chapters is fundamental enough for the book to be useful even as a text for SOFC technology at the graduate level.
Author : Meng Ni
Publisher : Royal Society of Chemistry
Page : 539 pages
File Size : 18,46 MB
Release : 2013-08-16
Category : Science
ISBN : 1849737770
Solid oxide fuel cells (SOFCs) are promising electrochemical power generation devices that can convert chemical energy of a fuel into electricity in an efficient, environmental-friendly, and quiet manner. Due to their high operating temperature, SOFCs feature fuel flexibility as internal reforming of hydrocarbon fuels and ammonia thermal cracking can be realized in SOFC anode. This book presents an overview of the SOFC technology with a focus on the recent developments in new technologies and new ideas for addressing the key issues of SOFC development. This book first introduces the fundamental principles of SOFCs and compares SOFC technology with conventional heat engines as well as low temperature fuel cells. Then the latest developments in SOFC R&D are reviewed and future directions are discussed. Key issues related to SOFC performance improvement, long-term stability, mathematical modelling, as well as system integration/control are addressed, including material development, infiltration technique for nano-structured electrode fabrication, focused ion beam – scanning electron microscopy (FIB-SEM) technique for microstructure reconstruction, the Lattice Boltzmann Method (LBM) simulation at pore scale, multi-scale modelling, SOFC integration with buildings and other cycles for stationary applications.
Author : S.C. Singhal
Publisher : Elsevier
Page : 424 pages
File Size : 27,74 MB
Release : 2003-12-08
Category : Science
ISBN : 1856173879
Introduction -- History of SOFCs -- Thermodynamics -- Electrolyte -- Cathode -- Anode -- Interconnect (ceramic, metallic) -- Electrode Polarizations -- Fuels and Fuel Processing -- Cell and Stack Designs -- Cell and Stack Modelling -- Cell and Stack Testing -- Applications and Demonstrations.
Author : Dario Marra
Publisher : Springer
Page : 174 pages
File Size : 46,49 MB
Release : 2016-03-07
Category : Technology & Engineering
ISBN : 1447156587
This book presents methodologies suitable for the optimal design of control and diagnosis strategies for Solid Oxide Fuel Cell (SOFC) systems. One key feature of the methodologies presented is the use of modeling tools with an ideal balance between accuracy and computational burden. Particular emphasis is given to the useful combination of models within a hierarchical framework to reduce the experimental efforts required for characterization and testing. Such tools are proven to be highly effective for SOFC systems destined for both residential and transportation applications. Throughout the book, optimization is always conceived in such a way so as to allow the SOFC systems to work efficiently while guaranteeing safe thermal operation, as well as an extended lifetime. This book is aimed at scientists and engineers involved in the design of marketable SOFC systems. It gathers the knowledge and experience derived from other research and industry practice for which control and diagnosis have proven to be the main keys to success and market penetration.
Author :
Publisher :
Page : 108 pages
File Size : 45,77 MB
Release : 2006
Category :
ISBN :
Convective heat and mass transfer in a planar, tri-layer, solid oxide fuel cell (SOFC) module is considered for a uniform supply of volatile species (80% hydrogen + 20% water vapor) and oxidant (20% oxygen + 80% nitrogen) to the electrolyte surface. With an Arrhenius electrochemical reaction rate, the coupled heat and mass transfer is modeled by steady incompressible fully-developed laminar flow in the interconnect ducts of rectangular cross section for both the anode-side fuel and cathode-side oxidant flows. The governing three-dimensional equations for mass, momentum, energy, and species transfer along with those for electrochemical kinetics are solved computationally using commercial CFD software. The homogeneous porous-layer flows, which are in thermal equilibrium with the solid matrix, are coupled with the electrochemical reaction rate to properly account for the flow-duct and anode/cathode interface heat/mass transfer. Parametric effects of rectangular flow duct aspect ratio and anode porous-layer thickness on the variations in species mass concentration and temperature distributions, flow friction factor, and convective heat transfer coefficient are presented. The combined effects of porous layer and electrochemical reaction are seen to alter the flow and heat transfer behavior of SOFC. The hydrodynamic and thermal behavior is characterized for effective performance and cooling, and interconnect channels of rectangular cross-section aspect ratio of ~ 2 are seen to provide optimal thermal management benefits. Parametric effects of flow duct cross-sectional shapes (triangle, trapezoid and, rectangle) and geometry along with heat transfer enhancing flow arrangements (offset-strip fin and wavy fin flows) are characterized by the variations in mass and temperature distributions, flow friction factor, and convective heat transfer coefficient. Though triangular cross section al interconnects showed lowest heat transfer coefficient it might be preferred de to its highest structural stability. Offset-strip flow arrangement has shown the best convective cooling and is probably the best interconnect design for the efficient thermal management in planar anode-supported SOFC.