Hydrogen Technologies Group

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Renewable Hydrogen Technologies

Author : Luis M Gandia
Publisher : Newnes
ISBN 13 : 044456361X
Total Pages : 471 pages
Book Rating : 4.4/5 (445 download)

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Book Synopsis Renewable Hydrogen Technologies by : Luis M Gandia

Download or read book Renewable Hydrogen Technologies written by Luis M Gandia and published by Newnes. This book was released on 2013-05-03 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fields covered by the hydrogen energy topic have grown rapidly, and now it has become clearly multidisciplinary. In addition to production, hydrogen purification and especially storage are key challenges that could limit the use of hydrogen fuel. In this book, the purification of hydrogen with membrane technology and its storage in "solid" form using new hydrides and carbon materials are addressed. Other novelties of this volume include the power conditioning of water electrolyzers, the integration in the electric grid of renewable hydrogen systems and the future role of microreactors and micro-process engineering in hydrogen technology as well as the potential of computational fluid dynamics to hydrogen equipment design and the assessment of safety issues. Finally, and being aware that transportation will likely constitute the first commercial application of hydrogen fuel, two chapters are devoted to the recent advances in hydrogen fuel cells and hydrogen-fueled internal combustion engines for transport vehicles. Hydrogen from water and biomass considered Holistic approach to the topic of renewable hydrogen production Power conditioning of water electrolyzers and integration of renewable hydrogen energy systems considered Subjects not included in previous books on hydrogen energy Micro process technology considered Subject not included in previous books on hydrogen energy Applications of CFD considered Subject not included in previous books on hydrogen energy Fundamental aspects will not be discussed in detail consciously as they are suitably addressed in previous books Emphasis on technological advancements Chapters written by recognized experts Up-to date approach to the subjects and relevant bibliographic references

Hydrogen Technologies Group

Author :
Publisher :
ISBN 13 :
Total Pages : 2 pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis Hydrogen Technologies Group by :

Download or read book Hydrogen Technologies Group written by and published by . This book was released on 2008 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Hydrogen Technologies Group at the National Renewable Energy Laboratory advances the Hydrogen Technologies and Systems Center's mission by researching a variety of hydrogen technologies.

Sensors for Safety and Process Control in Hydrogen Technologies

Author : Thomas Hübert
Publisher : CRC Press
ISBN 13 : 1466596554
Total Pages : 387 pages
Book Rating : 4.4/5 (665 download)

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Book Synopsis Sensors for Safety and Process Control in Hydrogen Technologies by : Thomas Hübert

Download or read book Sensors for Safety and Process Control in Hydrogen Technologies written by Thomas Hübert and published by CRC Press. This book was released on 2018-10-09 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understand, Select, and Design Sensors for Hydrogen-Based Applications The use of hydrogen generated from renewable energy sources is expected to become an essential component of a low-carbon, environmentally friendly energy supply, spurring the worldwide development of hydrogen technologies. Sensors for Safety and Process Control in Hydrogen Technologies provides practical, expert-driven information on modern sensors for hydrogen and other gases as well as physical parameters essential for safety and process control in hydrogen technologies. It illustrates how sensing technologies can ensure the safe and efficient implementation of the emerging global hydrogen market. The book explains the various facets of sensor technologies, including practical aspects relevant in hydrogen technologies. It presents a comprehensive and up-to-date account of the theory (physical and chemical principles), design, and implementations of sensors in hydrogen technologies. The authors also offer guidance on the development of new sensors based on the analysis of the capabilities and limitations of existing sensors with respect to current performance requirements. Suitable for both technical and non-technical personnel, the book provides a balance between detailed descriptions and simple explanations. It gives invaluable insight into the role sensors play as key enabling devices for both control and safety in established and emerging hydrogen technologies.

Hydrogen Technologies Group (Fact Sheet)

Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (14 download)

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Book Synopsis Hydrogen Technologies Group (Fact Sheet) by :

Download or read book Hydrogen Technologies Group (Fact Sheet) written by and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Hydrogen Technologies Group at the National Renewable Energy Laboratory advances the Hydrogen Technologies and Systems Center's mission by researching a variety of hydrogen technologies.

Science and Engineering of Hydrogen-Based Energy Technologies

Author : Paulo Emilio Miranda
Publisher : Academic Press
ISBN 13 : 0128142529
Total Pages : 438 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Science and Engineering of Hydrogen-Based Energy Technologies by : Paulo Emilio Miranda

Download or read book Science and Engineering of Hydrogen-Based Energy Technologies written by Paulo Emilio Miranda and published by Academic Press. This book was released on 2018-11-12 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Science and Engineering of Hydrogen-Based Energy Technologies explores the generation of energy using hydrogen and hydrogen-rich fuels in fuel cells from the perspective of its integration into renewable energy systems using the most sound and current scientific knowledge. The book first examines the evolution of energy utilization and the role expected to be played by hydrogen energy technologies in the world’s energy mix, not just for energy generation, but also for carbon capture, storage and utilization. It provides a general overview of the most common and promising types of fuel cells, such as PEMFCs, SOFCs and direct alcohol fuel cells. The co-production of chemical and electrolysis cells, as well as the available and future materials for fuel cells production are discussed. It then delves into the production of hydrogen from biomass, including waste materials, and from excess electricity produced by other renewable energy sources, such as solar, wind, hydro and geothermal. The main technological approaches to hydrogen storage are presented, along with several possible hydrogen energy engineering applications. Science and Engineering of Hydrogen-Based Energy Technologies’s unique approach to hydrogen energy systems makes it useful for energy engineering researchers, professionals and graduate students in this field. Policy makers, energy planning and management professionals, and energy analysts can also benefit from the comprehensive overview that it provides. Presents engineering fundamentals, commercially deployed technologies, up-and-coming developments and applications through a systemic approach Explores the integration of hydrogen technologies in renewable energy systems, including solar, wind, bioenergy and ocean energy Covers engineering standards, guidelines and regulations, as well as policy and social aspects for large-scale deployment of these technologies

Design and Analysis of Liquid Hydrogen Technologies

Author : Ahmad K. Sleiti
Publisher : Elsevier
ISBN 13 : 0443214379
Total Pages : 379 pages
Book Rating : 4.4/5 (432 download)

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Book Synopsis Design and Analysis of Liquid Hydrogen Technologies by : Ahmad K. Sleiti

Download or read book Design and Analysis of Liquid Hydrogen Technologies written by Ahmad K. Sleiti and published by Elsevier. This book was released on 2024-04-12 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: Design and Analysis of Liquid Hydrogen Technologies: Liquefaction, Storage and Distribution offers readers a comprehensive guide to the development, analysis, design, and assessment methodologies for liquid hydrogen. From the fundamentals to the latest developments and current applications, the book provides an extensive and systematic discussion of the design, simulation, and techno-economic analysis methodologies supported by practical examples, verified codes, and innovative process designs. The book provides a comprehensive overview of the liquid hydrogen economy, followed by detailed advanced thermoeconomic, exergoeconomic, optimization, and dynamic simulation models that are essential for the assessment of the current and future LH2 technologies. The authors then identify current technological challenges and propose innovative solutions for LH2 technologies, with a focus on the liquefaction plants and storage facilities. In-depth analyses are provided of the reliability, safety, and environmental impacts of the different stages of the LH2 supply, transportation, regasification, and distribution. To improve the economic feasibility of LH2 plants, recent advanced energy-integrated systems are discussed. Potential market applications are considered, and detailed techno-economic assessments are provided. Finally, the book critically evaluates the future directions and prospective development of liquid hydrogen technologies, regulations, safety standards, and new markets for liquid hydrogen applications. Bringing together the latest information, Design and Analysis of Liquid Hydrogen Technologies: Liquefaction, Storage and Distribution provides a valuable resource for students, researchers, scientists, and engineers working in the hydrogen economy or involved in the processing, design, manufacturing, quality control, reliability, safety, systems, and testing of cryogenic refrigeration and liquid hydrogen production, storage, and transportation. Describes, in detail, the current operational and conceptual hydrogen liquefaction, storage, transportation, regasification, and distribution technologies Offers comprehensive analytical tools, decision-making tools, and practical examples for the advanced modeling and simulation of liquid hydrogen plants Provides techno-economic, reliability, safety, and environmental impact analysis of liquid hydrogen technologies, along with future prospects

Hydrogen Technologies

Author : Olayinka I. Ogunsola
Publisher : CRC Press
ISBN 13 : 1040127991
Total Pages : 155 pages
Book Rating : 4.0/5 (41 download)

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Book Synopsis Hydrogen Technologies by : Olayinka I. Ogunsola

Download or read book Hydrogen Technologies written by Olayinka I. Ogunsola and published by CRC Press. This book was released on 2024-10-14 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offering a wide-range coverage, this book provides fundamentals as well as the applied science and technology involved in the whole hydrogen value chain, including production, storage, transportation, and utilization. It discusses some challenges and opportunities for hydrogen to address energy demand and climate change issues. Features: Discusses various technology pathways for manufacturing/producing hydrogen both directly (i.e., water splitting) and indirectly (i.e., gas, conversion of coal, and biomass). Covers techniques and technologies for transporting gaseous, liquid, solid, and other forms of hydrogen, including mobile and stationary modes as well as small- and large-scale forms of transportation. Offers techniques and technologies for storing hydrogen with emphasis on materials and physical and chemical characteristics. Describes hydrogen utilization in energy/energy conversion, industrial chemical, industrial agricultural, and transportation sectors. This book is aimed at engineers and scientists working in the disciplines of energy, chemical, environmental, petroleum, petrochemical, and mechanical engineering.

Solar Hydrogen Production

Author : Francesco Calise
Publisher : Academic Press
ISBN 13 : 0128148543
Total Pages : 586 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Solar Hydrogen Production by : Francesco Calise

Download or read book Solar Hydrogen Production written by Francesco Calise and published by Academic Press. This book was released on 2019-08-15 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solar Hydrogen Production: Processes, Systems and Technologies presents the most recent developments in solar-driven hydrogen generation methods. The book covers different hydrogen production routes, from renewable sources, to solar harvesting technologies. Sections focus on solar energy, presenting the main thermal and electrical technologies suitable for possible integration into solar-based hydrogen production systems and present a thorough examination of solar hydrogen technologies, ranging from solar-driven water electrolysis and solar thermal methods, to photo-catalytic and biological processes. All hydrogen-based technologies are covered, including data regarding the state-of-the art of each process in terms of costs, efficiency, measured parameters, experimental analyses, and demonstration projects. In the last part of the book, the role of hydrogen in the integration of renewable sources in electric grids, transportation sector, and end-user applications is assessed, considering their current status and future perspectives. The book includes performance data, tables, models and references to available standards. It is thus a key-resource for engineering researchers and scientists, in both academic and industrial contexts, involved in designing, planning and developing solar hydrogen systems. Offers a comprehensive overview of conventional and advanced solar hydrogen technologies, including simulation models, cost figures, R&D projects, demonstration projects, test standards, and safety and handling issues Encompasses, in a single volume, information on solar energy and hydrogen systems Includes detailed economic data on each technology for feasibility assessment of different systems

Hydrogen Production Technologies

Author : Mehmet Sankir
Publisher : John Wiley & Sons
ISBN 13 : 1119283655
Total Pages : 653 pages
Book Rating : 4.1/5 (192 download)

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Book Synopsis Hydrogen Production Technologies by : Mehmet Sankir

Download or read book Hydrogen Production Technologies written by Mehmet Sankir and published by John Wiley & Sons. This book was released on 2017-03-20 with total page 653 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a comprehensive practical review of the new technologies used to obtain hydrogen more efficiently via catalytic, electrochemical, bio- and photohydrogen production. Hydrogen has been gaining more attention in both transportation and stationary power applications. Fuel cell-powered cars are on the roads and the automotive industry is demanding feasible and efficient technologies to produce hydrogen. The principles and methods described herein lead to reasonable mitigation of the great majority of problems associated with hydrogen production technologies. The chapters in this book are written by distinguished authors who have extensive experience in their fields, and readers will have a chance to compare the fundamental production techniques and learn about the pros and cons of these technologies. The book is organized into three parts. Part I shows the catalytic and electrochemical principles involved in hydrogen production technologies. Part II addresses hydrogen production from electrochemically active bacteria (EAB) by decomposing organic compound into hydrogen in microbial electrolysis cells (MECs). The final part of the book is concerned with photohydrogen generation. Recent developments in the area of semiconductor-based nanomaterials, specifically semiconductor oxides, nitrides and metal free semiconductor-based nanomaterials for photocatalytic hydrogen production are extensively discussed.

Hydrogen in an International Context

Author : Ioan Iordache
Publisher : CRC Press
ISBN 13 : 1000795373
Total Pages : 302 pages
Book Rating : 4.0/5 (7 download)

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Book Synopsis Hydrogen in an International Context by : Ioan Iordache

Download or read book Hydrogen in an International Context written by Ioan Iordache and published by CRC Press. This book was released on 2022-09-01 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrogen in an International Context: Vulnerabilities of Hydrogen Energy in Emerging Markets describes strategies and developments for hydrogen civilization efforts realised by various stakeholders such as authorities, institutes, research, industry, and individuals, in different countries and at different stages of the development cycle. Through their contributions, the chapter authors in this book propose a new approach to actual and relevant topics of interest, generically called the hydrogen economy and civilization.Hydrogen vulnerabilities is a topic that includes new challenges that face the hydrogen energy market. Weaknesses for the hydrogen stakeholder are becoming more refined, and it is necessary to be an active and sensitive player to understand these. A prosperous development of hydrogen will require the assimilation of numerous, diverse and unfamiliar contexts. Challenges for hydrogen will not only be in scientific, technical, economical or public acceptance, but challenges also lie in the genesis of this topic and the neglect of some aspects, however marginal, which negatively influence the desired hydrogen developed.This book informs the reader about the status of hydrogen energy in the international market, and it includes a series of examples and case studies about hydrogen activities in various countries. Thus, due to the synergy of this library of contexts, the reader should be able to reach a level of intuition enabling them to see the strengths and weaknesses of hydrogen.

Hydrogen Storage Technologies

Author : Mehmet Sankir
Publisher : John Wiley & Sons
ISBN 13 : 111946062X
Total Pages : 296 pages
Book Rating : 4.1/5 (194 download)

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Book Synopsis Hydrogen Storage Technologies by : Mehmet Sankir

Download or read book Hydrogen Storage Technologies written by Mehmet Sankir and published by John Wiley & Sons. This book was released on 2018-07-10 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrogen storage is considered a key technology for stationary and portable power generation especially for transportation. This volume covers the novel technologies to efficiently store and distribute hydrogen and discusses the underlying basics as well as the advanced details in hydrogen storage technologies. The book has two major parts: Chemical and electrochemical hydrogen storage and Carbon-based materials for hydrogen storage. The following subjects are detailed in Part I: Multi stage compression system based on metal hydrides Metal-N-H systems and their physico-chemical properties Mg-based nano materials with enhanced sorption kinetics Gaseous and electrochemical hydrogen storage in the Ti-Z-Ni Electrochemical methods for hydrogenation/dehydrogenation of metal hydrides In Part II the following subjects are addressed: Activated carbon for hydrogen storage obtained from agro-industrial waste Hydrogen storage using carbonaceous materials Hydrogen storage performance of composite material consisting of single walled carbon nanotubes and metal oxide nanoparticles Hydrogen storage characteristics of graphene addition of hydrogen storage materials Discussion of the crucial features of hydrogen adsorption of nanotextured carbon-based materials

Hydrogen Technology

Author : Aline Léon
Publisher : Springer Science & Business Media
ISBN 13 : 3540699252
Total Pages : 680 pages
Book Rating : 4.5/5 (46 download)

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Book Synopsis Hydrogen Technology by : Aline Léon

Download or read book Hydrogen Technology written by Aline Léon and published by Springer Science & Business Media. This book was released on 2008-07-18 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aline Leon ́ In the last years, public attention was increasingly shifted by the media and world governmentsto the conceptsof saving energy,reducingpollution,protectingthe - vironment, and developing long-term energy supply solutions. In parallel, research funding relating to alternative fuels and energy carriers is increasing on both - tional and international levels. Why has future energy supply become such a matter of concern? The reasons are the problems created by the world’s current energy supply s- tem which is mainly based on fossil fuels. In fact, the energystored in hydrocarb- based solid, liquid, and gaseous fuels was, is, and will be widely consumed for internal combustion engine-based transportation, for electricity and heat generation in residential and industrial sectors, and for the production of fertilizers in agric- ture, as it is convenient, abundant, and cheap. However, such a widespread use of fossil fuels by a constantly growing world population (from 2. 3 billion in 1939 to 6. 5 billion in 2006) gives rise to the two problems of oil supply and environmental degradation. The problemrelated to oil supply is caused by the fact that fossil fuels are not - newable primary energy sources: This means that since the rst barrel of petroleum has been pumped out from the ground, we have been exhausting a heritage given by nature.

Hydrogen Safety for Energy Applications

Author : Alexei Kotchourko
Publisher : Butterworth-Heinemann
ISBN 13 : 0128204958
Total Pages : 421 pages
Book Rating : 4.1/5 (282 download)

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Book Synopsis Hydrogen Safety for Energy Applications by : Alexei Kotchourko

Download or read book Hydrogen Safety for Energy Applications written by Alexei Kotchourko and published by Butterworth-Heinemann. This book was released on 2022-03-25 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrogen Safety for Energy Applications: Engineering Design, Risk Assessment, and Codes and Standards presents different aspects of contemporary knowledge regarding the hazards, risks and safety connected with hydrogen systems. Sections cover the main hydrogen technologies and explore the scientific aspects of possible sources and consequences of accidental events that can occur when hydrogen is used, including in its vehicular applications. Risk assessment, as well as the safety measures/safety barriers applicable in such situations are also considered. Finally, a short survey concerning legal aspects is presented. Provides factual material, such as models, correlations, tables, nomograms and formulas that can be used to perform evaluations and propose mitigation measures Presents reference data and detailed descriptions and guidelines for contemporary risk assessment methodologies Covers accident phenomena and consequences of accidents specific to hydrogen systems in a widely and applicable way for a wide variety of hydrogen activities

Center for Electric & Hydrogen Technologies & Systems--Energy Systems Group: Hydrogen Technologies and Systems Team

Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (14 download)

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Book Synopsis Center for Electric & Hydrogen Technologies & Systems--Energy Systems Group: Hydrogen Technologies and Systems Team by :

Download or read book Center for Electric & Hydrogen Technologies & Systems--Energy Systems Group: Hydrogen Technologies and Systems Team written by and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Overview of NREL's Hydrogen Technologies & Systems Group which supports DOE's Hydrogen, Fuel Cells & Infrastructure Technologies Program.

Hydrogen Technology

Author : Moisés Romolos Cesario
Publisher : Elsevier
ISBN 13 : 0443135487
Total Pages : 371 pages
Book Rating : 4.4/5 (431 download)

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Book Synopsis Hydrogen Technology by : Moisés Romolos Cesario

Download or read book Hydrogen Technology written by Moisés Romolos Cesario and published by Elsevier. This book was released on 2024-06-28 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrogen Technology: Fundamentals and Applications relates theoretical concepts to practical case studies in the field of hydrogen technology with an emphasis on materials and their applications. To implement hydrogen conversion production processes, it is crucial to understand the structural, microstructural, textural, thermal, catalytic, and electrochemical properties of materials. Covering nanomaterials, heterogeneous catalysis, greenhouse gas conversion, reforming reactions for hydrogen production, valorization of hydrogen energy, biomass valorization, the hydrogen economy, and its technical feasibility, this book addresses how bio/hydrogen technology can be used to solve environmental problems, including how to produce, convert, and store energy through electro/catalytic reactions and chemical valorization. Providing an understanding of the different factors involved, such as the availability of raw material, location, viable process and production scale, and economic criteria, this book will especially be of interest to engineers, scientists, and students in the field of hydrogen technology. Explains the phenomena that govern electrocatalytic/catalytic reactions Covers the study of new materials design and industrial processes Includes process improvements for obtaining hydrogen via chemical and biological processes

Hydrogen and Fuel Cells

Author : Bent Sørensen
Publisher : Academic Press
ISBN 13 : 0123877091
Total Pages : 507 pages
Book Rating : 4.1/5 (238 download)

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Book Synopsis Hydrogen and Fuel Cells by : Bent Sørensen

Download or read book Hydrogen and Fuel Cells written by Bent Sørensen and published by Academic Press. This book was released on 2011-11-14 with total page 507 pages. Available in PDF, EPUB and Kindle. Book excerpt: A hydrogen economy, in which this one gas provides the source of all energy needs, is often touted as the long-term solution to the environmental and security problems associated with fossil fuels. However, before hydrogen can be used as fuel on a global scale we must establish cost effective means of producing, storing, and distributing the gas, develop cost efficient technologies for converting hydrogen to electricity (e.g. fuel cells), and creating the infrastructure to support all this. Sorensen is the only text available that provides up to date coverage of all these issues at a level appropriate for the technical reader. The book not only describes the "how" and "where" aspects of hydrogen fuels cells usage, but also the obstacles and benefits of its use, as well as the social implications (both economically and environmental). Written by a world-renowned researcher in energy systems, this thoroughly illustrated and cross-referenced book is an excellent reference for researchers, professionals and students in the field of renewable energy. Updated sections on PEM fuel cells, Molten carbonate cells, Solid Oxide cells and Biofuel cells Updated material to reflect the growing commercial acceptance of stationary and portable fuel cell systems, while also recognizing the ongoing research in automotive fuel cell systems A new example of a regional system based on renewable energy sources reflects the growing international attention to uses of renewable energy as part of the energy grid Examples of life cycle analysis of environmental and social impacts

The Hype About Hydrogen

Author : Joseph J. Romm
Publisher : Island Press
ISBN 13 : 1597266078
Total Pages : 252 pages
Book Rating : 4.5/5 (972 download)

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Book Synopsis The Hype About Hydrogen by : Joseph J. Romm

Download or read book The Hype About Hydrogen written by Joseph J. Romm and published by Island Press. This book was released on 2013-04-10 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lately it has become a matter of conventional wisdom that hydrogen will solve many of our energy and environmental problems. Nearly everyone -- environmentalists, mainstream media commentators, industry analysts, General Motors, and even President Bush -- seems to expect emission-free hydrogen fuel cells to ride to the rescue in a matter of years, or at most a decade or two. Not so fast, says Joseph Romm. In The Hype about Hydrogen, he explains why hydrogen isn't the quick technological fix it's cracked up to be, and why cheering for fuel cells to sweep the market is not a viable strategy for combating climate change. Buildings and factories powered by fuel cells may indeed become common after 2010, Joseph Romm argues, but when it comes to transportation, the biggest source of greenhouse-gas emissions, hydrogen is unlikely to have a significant impact before 2050. The Hype about Hydrogen offers a hype-free explanation of hydrogen and fuel cell technologies, takes a hard look at the practical difficulties of transitioning to a hydrogen economy, and reveals why, given increasingly strong evidence of the gravity of climate change, neither government policy nor business investment should be based on the belief that hydrogen cars will have meaningful commercial success in the near or medium term. Romm, who helped run the federal government's program on hydrogen and fuel cells during the Clinton administration, provides a provocative primer on the politics, business, and technology of hydrogen and climate protection.