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Author : Brett Holland
Publisher :
ISBN 13 :
Total Pages : 438 pages
Book Rating : 4.:/5 (224 download)
Download or read book Dynamic Performance Modelling and Testing of a Polymer Electrolyte Membrane Fuel Cell written by Brett Holland and published by . This book was released on 2003 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Alhussein Albarbar
Publisher : Springer
ISBN 13 : 3319707272
Total Pages : 172 pages
Book Rating : 4.3/5 (197 download)
Download or read book Proton Exchange Membrane Fuel Cells written by Alhussein Albarbar and published by Springer. This book was released on 2017-11-17 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines the characteristics of Proton Exchange Membrane (PEM) Fuel Cells with a focus on deriving realistic finite element models. The book also explains in detail how to set up measuring systems, data analysis, and PEM Fuel Cells’ static and dynamic characteristics. Covered in detail are design and operation principles such as polarization phenomenon, thermodynamic analysis, and overall voltage; failure modes and mechanisms such as permanent faults, membrane degradation, and water management; and modelling and numerical simulation including semi-empirical, one-dimensional, two-dimensional, and three-dimensional models. It is appropriate for graduate students, researchers, and engineers who work with the design and reliability of hydrogen fuel cells, in particular proton exchange membrane fuel cells.
Author : Gia Luong Huu Nguyen
Publisher :
ISBN 13 : 9781303306440
Total Pages : 121 pages
Book Rating : 4.3/5 (64 download)
Download or read book Dynamic Modeling and Experimental Evaluation of a High Temperature Polymer Electrolyte Membrane Fuel Cell System written by Gia Luong Huu Nguyen and published by . This book was released on 2013 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since 1990, the power generation market has shifted from large, centralized power plants to small, distributed engines to produce power near the point of consumption. The fuel cell is a prominent candidate for the small, distributed engines, despite the current barriers of reliability and cost. This research project evaluates the performance of a high temperature polymer electrolyte membrane fuel cell system. This thesis presents the dynamic model of a fuel cell system featuring a thermally integrated fuel processor, a fuel cell stack with cathode recirculation, and a heat recovery unit. Each component was calibrated with a steady-state model and then connected to form a system. Parallel with developing the dynamic model, engineers installed and operated three fuel cell prototypes. To verify the model, this study compared the results from the dynamic model to the experimental data in two scenarios: a power sweep from 1.7 to 3.5 kW, and a change in burner from 7.5 to 15 kW. After the verification, this study then used the model to investigate the control of ATR temperature. Through these analyses, the project's objectives are to: *Gain confidence the model accurately simulates the steady state and dynamic response of the integrated fuel cell system, and *Use the dynamic model to test the control of ATR temperature. This research found that the thermally integrated fuel processor together with the cathode recirculation could create a rise in the fuel processor temperature during rapid power increase. To stabilize the temperature, controlling the amount of air entering the cathode is necessary. This could necessitate the development of additional sensors and control methods for these integrated fuel cell systems in the future.
Author : Christian Siegel
Publisher : Logos Verlag Berlin GmbH
ISBN 13 : 3832539174
Total Pages : 182 pages
Book Rating : 4.8/5 (325 download)
Download or read book High temperature polymer electrolyte membrane fuel cells written by Christian Siegel and published by Logos Verlag Berlin GmbH. This book was released on 2015-03-20 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: A three-dimensional computational fluid dynamics model of a high temperature polymer electrolyte membrane fuel cell, employing a high temperature stable polybenzimidazole membrane electrode assembly doped with phosphoric acid, was developed and implemented using a commercially available finite element software. Three types of flow-fields were modeled and simulated. Selected simulation results at reference operating conditions were compared to the performance curves and to segmented solid-phase temperature and current density measurements. For the segmented measurements, an inhouse developed prototype cell was designed and manufactured. The segmented cell was successfully operated and the solid-phase temperature and the current density distribution were recorded, evaluated, and discussed. Sequentially scanned segmented electrochemical impedance spectroscopy measurements were performed to qualitatively support the observed trends. These measurements were used to identify and determine the causes of the inhomogeneous current density distributions. An equivalent circuit model was developed, the obtained spectra were analyzed, and the model parameters discussed. This work helps to provide a better understanding of the internal behaviour of a running high temperature polymer electrolyte membrane fuel cell and presents valuable data for modeling and simulation. For large fuel cells and complete fuel cell stacks in particular, well designed anode and cathode inlet and outlet sections are expected to aid in achieving flatter quantities distributions and in preventing hot spots over the membrane electrode assembly area, and to develop proper start-up, shut-down, and tempering concepts.
Author : Ugur Pasaogullari
Publisher : Springer Science & Business Media
ISBN 13 : 0387980687
Total Pages : 412 pages
Book Rating : 4.3/5 (879 download)
Download or read book Modeling and Diagnostics of Polymer Electrolyte Fuel Cells written by Ugur Pasaogullari and published by Springer Science & Business Media. This book was released on 2010-07-23 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume, presented by leading experts in the field, covers the latest advances in diagnostics and modeling of polymer electrolyte fuel cells, from understanding catalyst layer durability to start-up under freezing conditions.
Author : Christoph Hartnig
Publisher : Elsevier
ISBN 13 : 0857095471
Total Pages : 437 pages
Book Rating : 4.8/5 (57 download)
Download or read book Polymer Electrolyte Membrane and Direct Methanol Fuel Cell Technology written by Christoph Hartnig and published by Elsevier. This book was released on 2012-03-19 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer electrolyte membrane fuel cells (PEMFCs) and direct methanol fuel cells (DMFCs) technology are promising forms of low-temperature electrochemical power conversion technologies that operate on hydrogen and methanol respectively. Featuring high electrical efficiency and low operational emissions, they have attracted intense worldwide commercialization research and development efforts. These R&D efforts include a major drive towards improving materials performance, fuel cell operation and durability. In situ characterization is essential to improving performance and extending operational lifetime through providing information necessary to understand how fuel cell materials perform under operational loads.This two volume set reviews the fundamentals, performance, and in situ characterization of PEMFCs and DMFCs. Volume 1 covers the fundamental science and engineering of these low temperature fuel cells, focusing on understanding and improving performance and operation. Part one reviews systems fundamentals, ranging from fuels and fuel processing, to the development of membrane and catalyst materials and technology, and gas diffusion media and flowfields, as well as life cycle aspects and modelling approaches. Part two details performance issues relevant to fuel cell operation and durability, such as catalyst ageing, materials degradation and durability testing, and goes on to review advanced transport simulation approaches, degradation modelling and experimental monitoring techniques.With its international team of expert contributors, Polymer electrolyte membrane and direct methanol fuel cell technology Volumes 1 & 2 is an invaluable reference for low temperature fuel cell designers and manufacturers, as well as materials science and electrochemistry researchers and academics. Covers the fundamental science and engineering of polymer electrolyte membrane fuel cells (PEMFCs) and direct methanol fuel cells (DMFCs), focusing on understanding and improving performance and operation Reviews systems fundamentals, ranging from fuels and fuel processing, to the development of membrane and catalyst materials and technology, and gas diffusion media and flowfields, as well as life cycle aspects and modelling approaches Details performance issues relevant to fuel cell operation and durability, such as catalyst ageing, materials degradation and durability testing, and reviews advanced transport simulation approaches, degradation modelling and experimental monitoring techniques
Author : Christoph Hartnig
Publisher : Elsevier
ISBN 13 : 085709548X
Total Pages : 522 pages
Book Rating : 4.8/5 (57 download)
Download or read book Polymer Electrolyte Membrane and Direct Methanol Fuel Cell Technology written by Christoph Hartnig and published by Elsevier. This book was released on 2012-02-20 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer electrolyte membrane fuel cells (PEMFCs) and direct methanol fuel cells (DMFCs) technology are promising forms of low-temperature electrochemical power conversion technologies that operate on hydrogen and methanol respectively. Featuring high electrical efficiency and low operational emissions, they have attracted intense worldwide commercialization research and development efforts. These R&D efforts include a major drive towards improving materials performance, fuel cell operation and durability. In situ characterization is essential to improving performance and extending operational lifetime through providing information necessary to understand how fuel cell materials perform under operational loads. Polymer Electrolyte Membrane and Direct Methanol Fuel Cell Technology, Volume 2 details in situ characterization, including experimental and innovative techniques, used to understand fuel cell operational issues and materials performance. Part I reviews enhanced techniques for characterization of catalyst activities and processes, such as X-ray absorption and scattering, advanced microscopy and electrochemical mass spectrometry. Part II reviews characterization techniques for water and fuel management, including neutron radiography and tomography, magnetic resonance imaging and Raman spectroscopy. Finally, Part III focuses on locally resolved characterization methods, from transient techniques and electrochemical microscopy, to laser-optical methods and synchrotron radiography. With its international team of expert contributors, Polymer electrolyte membrane and direct methanol fuel cell technology will be an invaluable reference for low temperature fuel cell designers and manufacturers, as well as materials science and electrochemistry researchers and academics. Polymer electrolyte membrane and direct methanol fuel cell technology is an invaluable reference for low temperature fuel cell designers and manufacturers, as well as materials science and electrochemistry researchers and academics. Details in situ characterisation of polymer electrolyte membrane fuel cells (PEMFCs) and direct methanol fuel cells (DMFCs), including the experimental and innovative techniques used to understand fuel cell operational issues and materials performance Examines enhanced techniques for characterisation of catalyst activities and processes, such as X-ray absorption and scattering, advanced microscopy and electrochemical mass spectrometry Reviews characterisation techniques for water and fuel management, including neutron radiography and tomography, and comprehensively covers locally resolved characterisation methods, from transient techniques to laser-optical methods
Author : Jasna Jankovic
Publisher : Walter de Gruyter GmbH & Co KG
ISBN 13 : 3110622726
Total Pages : 508 pages
Book Rating : 4.1/5 (16 download)
Download or read book PEM Fuel Cells written by Jasna Jankovic and published by Walter de Gruyter GmbH & Co KG. This book was released on 2023-05-22 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive introduction to the rapidly developing field of modeling and characterization of PEM fuel cells. It focuses on i) fuel cell performance modeling and performance characterization applicable from single cells to stacks, ii) fundamental and advanced techniques for structural and compositional characterization of fuel cell components and iii) electrocatalyst design. Written by experts in this field, this book is an invaluable tool for graduate students and professionals.
Author : Qingfeng Li
Publisher : Springer
ISBN 13 : 3319170821
Total Pages : 561 pages
Book Rating : 4.3/5 (191 download)
Download or read book High Temperature Polymer Electrolyte Membrane Fuel Cells written by Qingfeng Li and published by Springer. This book was released on 2015-10-15 with total page 561 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive review of high-temperature polymer electrolyte membrane fuel cells (PEMFCs). PEMFCs are the preferred fuel cells for a variety of applications such as automobiles, cogeneration of heat and power units, emergency power and portable electronics. The first 5 chapters of the book describe rationalization and illustration of approaches to high temperature PEM systems. Chapters 6 - 13 are devoted to fabrication, optimization and characterization of phosphoric acid-doped polybenzimidazole membranes, the very first electrolyte system that has demonstrated the concept of and motivated extensive research activity in the field. The last 11 chapters summarize the state-of-the-art of technological development of high temperature-PEMFCs based on acid doped PBI membranes including catalysts, electrodes, MEAs, bipolar plates, modelling, stacking, diagnostics and applications.
Author : Alexander John Headley
Publisher :
ISBN 13 :
Total Pages : 290 pages
Book Rating : 4.:/5 (957 download)
Download or read book Dynamic Modeling and Analysis of Proton Exchange Membrane Fuel Cells for Control Design written by Alexander John Headley and published by . This book was released on 2016 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation seeks to address a number of issues facing the advancement of Proton Exchange Membrane (PEM) fuel cell technology by improving control-oriented modeling strategies for these systems. Real-time control is a major ongoing challenge for PEM fuel cell technologies, particularly with regards to water and temperature dynamics. This can lead to a number of operational concerns, such as membrane flooding and dehydration, which can seriously diminish the efficiency, reliability, and long term health of the system. To combat these issues, comprehensive models that are capable of capturing the dynamics of the key operating conditions and can be processed in real time are needed. Also, given the inherently distributed nature of the system, such a model would ideally account for the changes in the conditions from cell-to-cell in the stack, which can be very significant. With this goal in mind, the main focus of this dissertation is the development and experimental validation of control-oriented modeling techniques for PEM fuel cell stacks. The first major work in this study was the verification of a relative humidity model in response to varying loads. Through this work, a multiple control volume (CV) approach was developed and experimentally validated to model the distribution of operating conditions more accurately while keeping the computational expense sufficiently low. To optimize the modeling efforts, further analysis of the temperature and vapor distribution was performed starting from first principles. This led to the creation of various techniques to optimally size CVs based on the parameters and operating conditions of the system in question. Finally, it was noted throughout the testing that the performance of the membrane electrolyte assemblies in the test stack declined significantly from their initial state. To compensate for this, a Kalman filter was implemented to quantify the membrane degradation. SEM analysis of membranes from the test stack confirmed the validity of this technique. This work can be used to significantly improve real-time models for PEM fuel cells for model-based control applications.
Author : Ahmet Evren Firat
Publisher : Cuvillier Verlag
ISBN 13 : 3736992572
Total Pages : 131 pages
Book Rating : 4.7/5 (369 download)
Download or read book Mechanical Analysis of PEM Fuel Cell Stack Design written by Ahmet Evren Firat and published by Cuvillier Verlag. This book was released on 2016-06-02 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer electrolyte membrane (PEM) fuel cell stack was analyzed from a mechanical point of view with the help of measurements and simulations in this study. The deflection of the fuel cell stack was measured with the help of the experimental set-up under operating conditions. The effects of cell operating parameters and cyclic conditions on the mechanical properties of the fuel cell stack were investigated. In order to extend the mechanical analysis of the fuel cells, two computational models were established containing the geometrical features in detail. A large-scale fuel cell stack model was built for the thermomechanical analysis. The second model was built on a cross-section geometry for the electrochemical analysis including fluid dynamics. The internal stress distribution and buckling of fuel cell stack were examined. The influence of the mechanical compression on the cell performance and squeezing of the gas diffusion layers are investigated. A design procedure is developed for fuel cell stack regarding the durability and performance from a mechanical point of view.
Author : Stephen J. Paddison
Publisher : Springer Science & Business Media
ISBN 13 : 0387786910
Total Pages : 596 pages
Book Rating : 4.3/5 (877 download)
Download or read book Device and Materials Modeling in PEM Fuel Cells written by Stephen J. Paddison and published by Springer Science & Business Media. This book was released on 2008-10-15 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational studies on fuel cell-related issues are increasingly common. These studies range from engineering level models of fuel cell systems and stacks to molecular level, electronic structure calculations on the behavior of membranes and catalysts, and everything in between. This volume explores this range. It is appropriate to ask what, if anything, does this work tell us that we cannot deduce intuitively? Does the emperor have any clothes? In answering this question resolutely in the affirmative, I will also take the liberty to comment a bit on what makes the effort worthwhile to both the perpetrator(s) of the computational study (hereafter I will use the blanket terms modeler and model for both engineering and chemical physics contexts) and to the rest of the world. The requirements of utility are different in the two spheres. As with any activity, there is a range of quality of work within the modeling community. So what constitutes a useful model? What are the best practices, serving both the needs of the promulgator and consumer? Some of the key com- nents are covered below. First, let me provide a word on my ‘credentials’ for such commentary. I have participated in, and sometimes initiated, a c- tinuous series of such efforts devoted to studies of PEMFC components and cells over the past 17 years. All that participation was from the experim- tal, qualitative side of the effort.
Author : Felix N. Büchi
Publisher : Springer Science & Business Media
ISBN 13 : 038785536X
Total Pages : 489 pages
Book Rating : 4.3/5 (878 download)
Download or read book Polymer Electrolyte Fuel Cell Durability written by Felix N. Büchi and published by Springer Science & Business Media. This book was released on 2009-02-08 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers a significant number of R&D projects, performed mostly after 2000, devoted to the understanding and prevention of performance degradation processes in polymer electrolyte fuel cells (PEFCs). The extent and severity of performance degradation processes in PEFCs were recognized rather gradually. Indeed, the recognition overlapped with a significant number of industrial dem- strations of fuel cell powered vehicles, which would suggest a degree of technology maturity beyond the resaolution of fundamental failure mechanisms. An intriguing question, therefore, is why has there been this apparent delay in addressing fun- mental performance stability requirements. The apparent answer is that testing of the power system under fully realistic operation conditions was one prerequisite for revealing the nature and extent of some key modes of PEFC stack failure. Such modes of failure were not exposed to a similar degree, or not at all, in earlier tests of PEFC stacks which were not performed under fully relevant conditions, parti- larly such tests which did not include multiple on–off and/or high power–low power cycles typical for transportation and mobile power applications of PEFCs. Long-term testing of PEFCs reported in the early 1990s by both Los Alamos National Laboratory and Ballard Power was performed under conditions of c- stant cell voltage, typically near the maximum power point of the PEFC.
Author : Xianguo Li
Publisher : John Wiley & Sons Incorporated
ISBN 13 : 9780470871102
Total Pages : 512 pages
Book Rating : 4.8/5 (711 download)
Download or read book Polymer Electrolyte Membrane Fuel Cells written by Xianguo Li and published by John Wiley & Sons Incorporated. This book was released on 2007-07 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering the latest developments in the field, this book provides an up–to–date summary of PEM fuel cell technology and presents the analysis, modeling and simulation of the electrochemical and transport processes. The book explains issues related to performance enhancement and design optimization and discusses the problems of heat and water management in PEM fuel cells. Key features include: researching fuel cells and designing fuel cell systems, this book is also a comprehensive reference for newcomers to the field and advanced university students devoted entirely to the development and applications of polymer electrolyte membrane (PEM) fuel cells provides an essential guide to performance enhancement and design optimization presents the components and configurations of PEM fuel cells. covers the basic principles of operation including electrochemical reactions, the transport of reactants and water discusses carbon monoxide poisoning and mitigation methods also includes illustrative examples and case studies A must have for researchers involved in developing fuel cell systems and designing fuel cell applications. As well as practicing electrical and automotive engineers; industrialists working to develop new fuel cell systems. A useful reference for senior undergraduate and postgraduate students studying fuel cell modules within courses on automotive, chemical or power engineering.
Author :
Publisher :
ISBN 13 :
Total Pages : 156 pages
Book Rating : 4.:/5 (226 download)
Download or read book Dynamic Modeling of Polymer Electrolyte Membrane Fuel Cell Stack with 1D and 2D CFD Techniques written by and published by . This book was released on 2006 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sai Krishna Bobba
Publisher :
ISBN 13 : 9781339454931
Total Pages : 55 pages
Book Rating : 4.4/5 (549 download)
Download or read book Polymer Electrolyte Membrane Fuel Cell Design for an Electric Vehicle written by Sai Krishna Bobba and published by . This book was released on 2015 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fuel cells have a broader range of applications from large power plants to household power source module as well as to electric powered vehicles. One of the best promising alternative technologies for improved efficiency and reduced vehicle emission is the Polymer Electrolyte Membrane (PEM) fuel cell with hydrogen as the fuel. This work is a continuation of the previous experimental and simulation studies conducted at NIU in an effort to develop high performance PEM fuel Cell for operation at a higher power density. The objective of this research is to design a fuel cell power unit using a PEM fuel cell simulation model integrated with the hydrogen storage and supply system and a representative automotive load cycle. This study also investigates and performs experimental tests using scaled down standard automotive load cycles on a scaled-down 1.2kW stack of Polymer Electrolyte Membrane (PEMFC) fuel cells to determine and validate performance and operating characteristics of the fuel cell system. Results will be presented for a real world operating conditions of the high performance PEMFC stack to determine the feasibility and aid in the improvement of the future design.
Author : Fengge Gao
Publisher : John Wiley & Sons
ISBN 13 : 1118566378
Total Pages : 171 pages
Book Rating : 4.1/5 (185 download)
Download or read book Proton Exchange Membrane Fuel Cells Modeling written by Fengge Gao and published by John Wiley & Sons. This book was released on 2013-02-07 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fuel cell is a potential candidate for energy storage and conversion in our future energy mix. It is able to directly convert the chemical energy stored in fuel (e.g. hydrogen) into electricity, without undergoing different intermediary conversion steps. In the field of mobile and stationary applications, it is considered to be one of the future energy solutions. Among the different fuel cell types, the proton exchange membrane (PEM) fuel cell has shown great potential in mobile applications, due to its low operating temperature, solid-state electrolyte and compactness. This book presents a detailed state of art of PEM fuel cell modeling, with very detailed physical phenomena equations in different physical domains. Examples and a fully coupled multi-physical 1.2 kW PEMFC model are given help the reader better understand how to use the equations.
