Dynamic Modeling And Experimental Evaluation Of A High Temperature Polymer Electrolyte Membrane Fuel Cell System

Download Dynamic Modeling And Experimental Evaluation Of A High Temperature Polymer Electrolyte Membrane Fuel Cell System full books in PDF, epub, and Kindle. Read online Dynamic Modeling And Experimental Evaluation Of A High Temperature Polymer Electrolyte Membrane Fuel Cell System ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!

Dynamic Modeling and Experimental Evaluation of a High Temperature Polymer Electrolyte Membrane Fuel Cell System

Author : Gia Luong Huu Nguyen
Publisher :
ISBN 13 : 9781303306440
Total Pages : 121 pages
Book Rating : 4.3/5 (64 download)

DOWNLOAD NOW!

Book Synopsis Dynamic Modeling and Experimental Evaluation of a High Temperature Polymer Electrolyte Membrane Fuel Cell System by : Gia Luong Huu Nguyen

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.

Proton Exchange Membrane Fuel Cells

Author : Alhussein Albarbar
Publisher : Springer
ISBN 13 : 3319707272
Total Pages : 172 pages
Book Rating : 4.3/5 (197 download)

DOWNLOAD NOW!

Book Synopsis Proton Exchange Membrane Fuel Cells by : Alhussein Albarbar

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.

Dynamic Modeling and Analysis of Proton Exchange Membrane Fuel Cells for Control Design

Author : Alexander John Headley
Publisher :
ISBN 13 :
Total Pages : 290 pages
Book Rating : 4.:/5 (957 download)

DOWNLOAD NOW!

Book Synopsis Dynamic Modeling and Analysis of Proton Exchange Membrane Fuel Cells for Control Design by : Alexander John Headley

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.

High Temperature Polymer Electrolyte Membrane Fuel Cells

Author : Qingfeng Li
Publisher : Springer
ISBN 13 : 3319170821
Total Pages : 561 pages
Book Rating : 4.3/5 (191 download)

DOWNLOAD NOW!

Book Synopsis High Temperature Polymer Electrolyte Membrane Fuel Cells by : Qingfeng Li

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.

High temperature polymer electrolyte membrane fuel cells

Author : Christian Siegel
Publisher : Logos Verlag Berlin GmbH
ISBN 13 : 3832539174
Total Pages : 182 pages
Book Rating : 4.8/5 (325 download)

DOWNLOAD NOW!

Book Synopsis High temperature polymer electrolyte membrane fuel cells by : Christian Siegel

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.

Polymer Electrolyte Membrane and Direct Methanol Fuel Cell Technology

Author : Christoph Hartnig
Publisher : Elsevier
ISBN 13 : 0857095471
Total Pages : 437 pages
Book Rating : 4.8/5 (57 download)

DOWNLOAD NOW!

Book Synopsis Polymer Electrolyte Membrane and Direct Methanol Fuel Cell Technology by : Christoph Hartnig

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

Molecular Modeling and Experimental Study of Electrocatalytic and Transport Processes in High Temperature Polymer Electrolyte Fuel Cells

Download Molecular Modeling and Experimental Study of Electrocatalytic and Transport Processes in High Temperature Polymer Electrolyte Fuel Cells PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 35 pages
Book Rating : 4.:/5 (742 download)

DOWNLOAD NOW!

Book Synopsis Molecular Modeling and Experimental Study of Electrocatalytic and Transport Processes in High Temperature Polymer Electrolyte Fuel Cells by :

Download or read book Molecular Modeling and Experimental Study of Electrocatalytic and Transport Processes in High Temperature Polymer Electrolyte Fuel Cells written by and published by . This book was released on 2005 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: The molecular dynamic simulation correctly predicted the permeabilities of hydroniums and methanol in a temperature range between 20 and 1200C. The calculated conductivity data gradually deviated from the experimental values with increasing temperature. The deviations were much less than one order of magnitude in wide ranges of temperature and humidity. The permeability of methanol in new ABPBI membranes is much lower than that in the Nafion 117 membrane. The ABPBI membrane is thus promising for use as the polymer electrolyte in a high temperature proton exchange membrane fuel cell. The methods that we used for the ab initio atomistic simulations allowed evaluation of the energy barriers for the electrochemical reactions. The ab initio simulation results correlated with the experimental results. We also found that La(1-x)Fe(1-y)O(3-delta)showed significant catalytic activity for methanol oxidation in DMFC. The current sensing atomic force microscopy study allows evaluation of the intrinsic electrochemical activity of electrocatalysts. The results clearly demonstrate that on the catalyst surface areas that are about 20 nanometers to the ionomers are active and the surfaces 50-100 nanometers from the ionomer are not active at all. Only the active sites close to ionomers contribute to the electrocatalysis in a fuel cell.

PEM Fuel Cells

Author : Gurbinder Kaur
Publisher : Elsevier
ISBN 13 : 0128237090
Total Pages : 584 pages
Book Rating : 4.1/5 (282 download)

DOWNLOAD NOW!

Book Synopsis PEM Fuel Cells by : Gurbinder Kaur

Download or read book PEM Fuel Cells written by Gurbinder Kaur and published by Elsevier. This book was released on 2021-11-16 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: PEM Fuel Cells: Fundamentals, Advanced Technologies, and Practical Application provides a comprehensive introduction to the principles of PEM fuel cell, their working condition and application, and the latest breakthroughs and challenges for fuel cell technology. Each chapter follows a systematic and consistent structure with clear illustrations and diagrams for easy understanding. The opening chapters address the basics of PEM technology; stacking and membrane electrode assembly for PEM, degradation mechanisms of electrocatalysts, platinum dissolution and redeposition, carbon-support corrosion, bipolar plates and carbon nanotubes for the PEM, and gas diffusion layers. Thermodynamics, operating conditions, and electrochemistry address fuel cell efficiency and the fundamental workings of the PEM. Instruments and techniques for testing and diagnosis are then presented alongside practical tests. Dedicated chapters explain how to use MATLAB and COMSOL to conduct simulation and modeling of catalysts, gas diffusion layers, assembly, and membrane. Degradation and failure modes are discussed in detail, providing strategies and protocols for mitigation. High-temperature PEMs are also examined, as are the fundamentals of EIS. Critically, the environmental impact and life cycle of the production and storage of hydrogen are addressed, as are the risk and durability issues of PEMFC technology. Dedicated chapters are presented on the economics and commercialization of PEMFCs, including discussion of installation costs, initial capital costs, and the regulatory frameworks; apart from this, there is a separate chapter on their application to the automotive industry. Finally, future challenges and applications are considered. PEM Fuel Cells: Fundamentals, Advanced Technologies, and Practical Application provides an in-depth and comprehensive reference on every aspect of PEM fuel cells fundamentals, ideal for researchers, graduates, and students. Presents the fundamentals of PEM fuel cell technology, electrolytes, membranes, modeling, conductivity, recent trends, and future applications Addresses commercialization, public policy, and the environmental impacts of PEMFC in dedicated chapters Presents state-of-the-art PEMFC research alongside the underlying concepts

Modeling and Diagnostics of Polymer Electrolyte Fuel Cells

Author : Ugur Pasaogullari
Publisher : Springer Science & Business Media
ISBN 13 : 0387980687
Total Pages : 412 pages
Book Rating : 4.3/5 (879 download)

DOWNLOAD NOW!

Book Synopsis Modeling and Diagnostics of Polymer Electrolyte Fuel Cells by : Ugur Pasaogullari

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.

Mechanical Analysis of PEM Fuel Cell Stack Design

Author : Ahmet Evren Firat
Publisher : Cuvillier Verlag
ISBN 13 : 3736992572
Total Pages : 131 pages
Book Rating : 4.7/5 (369 download)

DOWNLOAD NOW!

Book Synopsis Mechanical Analysis of PEM Fuel Cell Stack Design by : Ahmet Evren Firat

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.

Experimental Evaluation and Computer Simulation of a Proton Exchange Membrane Fuel Cell at High-altitude Conditions

Author : Joseph William Pratt
Publisher :
ISBN 13 :
Total Pages : 278 pages
Book Rating : 4.:/5 (55 download)

DOWNLOAD NOW!

Book Synopsis Experimental Evaluation and Computer Simulation of a Proton Exchange Membrane Fuel Cell at High-altitude Conditions by : Joseph William Pratt

Download or read book Experimental Evaluation and Computer Simulation of a Proton Exchange Membrane Fuel Cell at High-altitude Conditions written by Joseph William Pratt and published by . This book was released on 2004 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Proton Exchange Membrane Fuel Cells Modeling

Author : Fengge Gao
Publisher : John Wiley & Sons
ISBN 13 : 1118566378
Total Pages : 171 pages
Book Rating : 4.1/5 (185 download)

DOWNLOAD NOW!

Book Synopsis Proton Exchange Membrane Fuel Cells Modeling by : Fengge Gao

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.

Control of Fuel Cell Power Systems

Author : Jay T. Pukrushpan
Publisher : Springer Science & Business Media
ISBN 13 : 1447137922
Total Pages : 175 pages
Book Rating : 4.4/5 (471 download)

DOWNLOAD NOW!

Book Synopsis Control of Fuel Cell Power Systems by : Jay T. Pukrushpan

Download or read book Control of Fuel Cell Power Systems written by Jay T. Pukrushpan and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presenting the latest research in the control of fuel cell technology, this book will contribute to the commercial viability of the technology. The authors’ background in automotive technology gives the work added authority as a vital element of future planning.

Biopolymer Membranes and Films

Author : Mariana Agostini De Moraes
Publisher : Elsevier
ISBN 13 : 0128181354
Total Pages : 658 pages
Book Rating : 4.1/5 (281 download)

DOWNLOAD NOW!

Book Synopsis Biopolymer Membranes and Films by : Mariana Agostini De Moraes

Download or read book Biopolymer Membranes and Films written by Mariana Agostini De Moraes and published by Elsevier. This book was released on 2020-06-19 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biopolymer Membranes and Films: Health, Food, Environment, and Energy Applications presents the latest techniques for the design and preparation of biopolymer-based membranes and films, leading to a range of cutting-edge applications. The first part of the book introduces the fundamentals of biopolymers, two-dimensional systems, and the characterization of biopolymer membranes and films, considering physicochemical, mechanical and barrier properties. Subsequent sections are organized by application area, with each chapter explaining how biopolymer-based membranes or films can be developed for specific innovative uses across the health, food, environmental and energy sectors. This book is a valuable resource for researchers, scientists and advanced students involved in biopolymer science, polymer membranes and films, polymer chemistry and materials science, as well as for those in industry and academia who are looking to develop materials for advanced applications in the health, food science, environment or energy industries. Presents detailed coverage of a range of novel applications in key strategic areas across health, food, environment and energy Considers the difficulties associated with two-dimensional materials Assists the reader in selecting the best materials and properties for specific applications Helps researchers, scientists and engineers combine the enhanced properties of membranes and films with the sustainable characteristics of biopolymer-based materials

PEM Fuel Cells

Author : Frano Barbir
Publisher : Academic Press
ISBN 13 : 0123877105
Total Pages : 537 pages
Book Rating : 4.1/5 (238 download)

DOWNLOAD NOW!

Book Synopsis PEM Fuel Cells by : Frano Barbir

Download or read book PEM Fuel Cells written by Frano Barbir and published by Academic Press. This book was released on 2012-09-25 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt: Demand for fuel cell technology is growing rapidly. Fuel cells are being commercialized to provide power to buildings like hospitals and schools, to replace batteries in portable electronic devices, and as replacements for internal combustion engines in vehicles. PEM (Proton Exchange Membrane) fuel cells are lighter, smaller, and more efficient than other types of fuel cell. As a result, over 80% of fuel cells being produced today are PEM cells. This new edition of Dr. Barbir's groundbreaking book still lays the groundwork for engineers, technicians and students better than any other resource, covering fundamentals of design, electrochemistry, heat and mass transport, as well as providing the context of system design and applications. Yet it now also provides invaluable information on the latest advances in modeling, diagnostics, materials, and components, along with an updated chapter on the evolving applications areas wherein PEM cells are being deployed. Comprehensive guide covers all aspects of PEM fuel cells, from theory and fundamentals to practical applications Provides solutions to heat and water management problems engineers must face when designing and implementing PEM fuel cells in systems Hundreds of original illustrations, real-life engineering examples, and end-of-chapter problems help clarify, contextualize, and aid understanding

Modeling, Simulation and Experimental Validation of Polymer Electrolyte Membrane Fuel Cells and Alkaline Membrane Fuel Cells

Author : Lauber De Souza Martins
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (859 download)

DOWNLOAD NOW!

Book Synopsis Modeling, Simulation and Experimental Validation of Polymer Electrolyte Membrane Fuel Cells and Alkaline Membrane Fuel Cells by : Lauber De Souza Martins

Download or read book Modeling, Simulation and Experimental Validation of Polymer Electrolyte Membrane Fuel Cells and Alkaline Membrane Fuel Cells written by Lauber De Souza Martins and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Fuel cell technology is currently showing itself as a promising alternative for clean energy production due to its high efficiency and minimum environmental impact. However, its high cost is still a challenge that prevents this technology of being extensively used. A new conception and optimization are a natural alternative to reduce cost and make fuel cells increasingly more attractive for power generation. Geometric design, including the internal structure and external shape, considerably affect the thermal, fluid and electrochemical characteristics, which determines the polarization curves as well as the thermal and power inertia. In order to predict the response of fuel cells according to the variation of manufacturing materials, physical properties, operating and design parameters, a reliable simulation model (and computationally fast) is necessary. A simplified and comprehensive mathematical model for a polymer electrolyte membrane fuel cell (PEMFC) is developed and experimentally validated. Numerical results are obtained with the model for an existing set of ten commercial unit PEM fuel cells. The computed polarization and power curves are directly compared to the experimentally measured ones with good qualitative and quantitative agreement. Alkaline Membrane Fuel Cell (AMFC) is a recently developed fuel cell type, which has shown good experimental results. A mathematical model for a single AMFC with square section and fixed volume is introduced. The model is based on electrochemical principles, conservation of mass, momentum, energy and species. It also takes into account pressure drop in the gas channels and gradient of temperature with respect to space in the flow direction. The simulation results comprise temperature, net power, polarization curves and gas channels pressure drop. The computed temperature, polarization and power curves for AMFC are directly compared to the experimentally measured ones (using a prototype built in laboratory) with good qualitative and quantitative agreement. Therefore, the model is expected to be a useful tool for PEMFC and AMFC design and optimization.

Handbook of Thermal Management Systems

Author : Fethi Aloui
Publisher : Elsevier
ISBN 13 : 0443190186
Total Pages : 862 pages
Book Rating : 4.4/5 (431 download)

DOWNLOAD NOW!

Book Synopsis Handbook of Thermal Management Systems by : Fethi Aloui

Download or read book Handbook of Thermal Management Systems written by Fethi Aloui and published by Elsevier. This book was released on 2023-08-24 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Thermal Management Systems: e-Mobility and Other Energy Applications is a comprehensive reference on the thermal management of key renewable energy sources and other electronic components. With an emphasis on practical applications, the book addresses thermal management systems of batteries, fuel cells, solar panels, electric motors, as well as a range of other electronic devices that are crucial for the development of sustainable transport systems. Chapters provide a basic understanding of the thermodynamics behind the development of a thermal management system, update on Batteries, Fuel Cells, Solar Panels, and Other Electronics, provide a detailed description of components, and discuss fundamentals. Dedicated chapters then systematically examine the heating, cooling, and phase changes of each system, supported by numerical analyses, simulations and experimental data. These chapters include discussion of the latest technologies and methods and practical guidance on their application in real-world system-level projects, as well as case studies from engineering systems that are currently in operation. Finally, next-generation technologies and methods are discussed and considered. Presents a comprehensive overview of thermal management systems for modern electronic technologies related to energy production, storage and sustainable transportation Addresses the main bottlenecks in the technology development for future green and sustainable transportation systems Focuses on the practical aspects and implementation of thermal management systems through industrial case studies, real-world examples, and solutions to key problems