Eroi
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Energy Return On Investment With The Concept Of Eroi Applications Criticism And Implications
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Author : Anna Szujo
language : en
Publisher: GRIN Verlag
Release Date : 2021-04-08
Energy Return On Investment With The Concept Of Eroi Applications Criticism And Implications written by Anna Szujo and has been published by GRIN Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-04-08 with Science categories.
Seminar paper from the year 2016 in the subject Engineering - Power Engineering, grade: 1,0, Technical University of Munich (Department of Electrical and Computer Engineering), course: Advanced Seminar on Renewable and Sustainable Energy Systems, language: English, abstract: This paper is about the energy return of investment. Energy has a significant impact on economic growth and is a key driver for the wellbeing of a society. The less a society has to spend on energy, the more remains for consumption and discretionary spending that is directly translated into economic growth. This impact can be assessed with the help of the net energy analysis that makes use of the concept of EROI. The Energy Return On Investment is the ratio of the quantity of energy delivered to the quantity of energy consumed in a given process. Thus, this metric serves to measure the accessibility of a resource, meaning that the higher the EROI, the greater the amount of net energy delivered to society in order to support economic growth. This goes hand in hand with the finding that there is a minimum level of EROI that has to be reached, otherwise economic growth cannot be possible. Given that net energy analysis is going to be one of the most fundamental concepts in academic and policy discussion in view of the future of the energy mix there is still a clear need for a standardized and independent framework to calculate EROI.
Spain S Photovoltaic Revolution
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Author : Pedro A. Prieto
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-01-04
Spain S Photovoltaic Revolution written by Pedro A. Prieto and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-01-04 with Technology & Engineering categories.
The Energy Return on Energy Invested (EROI or EROEI) is the amount of energy acquired from a particular energy source divided by the energy expended, or invested, in obtaining that energy. EROI is an essential and seemingly simple measure of the usable energy or “energy profit” from the exploitation of an energy source, but it is not so easy to determine all of the energy expenditures that should be included in the calculation. Because EROI values are generally low for renewable energy sources, differences in these estimates can lead to sharply divergent conclusions about the viability of these energy technologies. This book presents the first complete energy analysis of a large-scale, real-world deployment of photovoltaic (PV) collection systems representing 3.5 GW of installed, grid-connected solar plants in Spain. The analysis includes all of the factors that limit and adjust the real electricity output through one full-year cycle, and all of the fossil fuel inputs required to achieve these results. The authors’ comprehensive analysis of energy inputs, which assigns energy cost estimates to all financial expenditures, yields EROI values that are less than half of those claimed by other investigators and by the solar industry. Sensitivity analysis is used to test various assumptions in deriving these EROI estimates. The results imply that the EROI of current, large-scale PV systems may be too low to seamlessly support an energy and economic transition away from fossil fuels. Given the pervasiveness of fossil fuel subsidies in the modern economy, a key conclusion is that all components of the system that brings solar power to the consumer, from manufacturing to product maintenance and life cycle, must be improved in terms of energy efficiency. The materials science of solar conversion efficiency is only one such component. Sunny Spain represented an ideal case study as the country had the highest penetration of solar PV energy at 2.3 percent of total national demand as well as state-of-the-art expertise in solar power including grid management of intermittent, modern renewable systems. This book, written by a uniquely qualified author team consisting of the chief engineer for several major photovoltaic projects in Spain and the world’s leading expert on the concept and application of EROI, provides a comprehensive understanding of the net energy available to society from energy sources in general and from functioning PV installations under real-world conditions in particular. The authors provide critical insight into the capacity of renewable energy sources to fill the foreseeable gap between world energy demand and depletion rates for fossil fuels. · Presents the first comprehensive study of the EROI of large-scale solar PV systems in a developed country · Uses real-world operational data rather than laboratory approximations and extrapolations · Describes the dependence of one alternative energy source on the goods and services of a fossil-fueled economy · Has global implications for the potential of renewable energy sources to replace dwindling reserves of fossil fuels · Written with the first-hand knowledge of the chief, on-site engineer for many solar installations in Spain together with the leader in the development and application of the concept of EROI
Energy Return On Investment
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Author : Charles A.S. Hall
language : en
Publisher: Springer
Release Date : 2016-11-29
Energy Return On Investment written by Charles A.S. Hall and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-11-29 with Business & Economics categories.
This authoritative but highly accessible book presents the reader with a powerful framework for understanding the critical role of the energy return on investment (EROI) in the survival and well-being of individuals, ecosystems, businesses, economies and nations. Growth and development are fundamental and ubiquitous processes at all scales, from individuals to food crops to national economies. While we are all familiar with the concepts of economic growth and living standards as measured by gross domestic product (GDP), we often take for granted the energy use that underpins GDP and our expectations for year-on-year growth. In this book, you will learn how these measures of “progress” are completely dependent on the balance that can be achieved between energy costs (inputs) and gains. Nothing is made or moved without an energy surplus, and it is the EROI of available energy sources more than any other single factor that determines the shape of civilization. Nearly all politics and economics assume that policy and market forces are the levers upon which future outcomes will hinge. However, this book presents many examples of historical and current events that can be explained much more clearly from an energetic perspective. In addition, a future scenario is developed that gives a central place to EROI in assessing the potential of governmental and private initiatives to substitute so-called renewable energy sources for diminishing stocks of fossil fuels. When cheap fossil fuels are no longer available in the abundance needed to mask economic problems and power business as usual, it will be EROI more than the plethora of “green” technologies that creates the boundary conditions for a sustainable future.
Approaches To Determine Minimum Energy Return On Investment Eroi A Summarization And Evaluation
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Author : Minh Hien Phan
language : en
Publisher: GRIN Verlag
Release Date : 2021-11-04
Approaches To Determine Minimum Energy Return On Investment Eroi A Summarization And Evaluation written by Minh Hien Phan and has been published by GRIN Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-11-04 with Science categories.
Seminar paper from the year 2021 in the subject Energy Sciences, grade: 1,3, University of Cologne, language: English, abstract: This paper derives four major approaches from contemporary literature; furthermore, the difference in boundaries, and data requirement might indicate problems that should be subject to future researches. One of the biggest concerns of the contemporary generation is the so-called energy transition, i.e., the transitioning of the energy sector away from fossil fuels (FF) to more sustainable renewable energy (RE). In this regard, current discussions are surrounding the two main topics: firstly, whether and how such a transition can be economically profitable (or even feasible); and secondly, whether it would cause energy scarcity. Many scholars who concern themselves with the latter topic utilize the concept "Energy Return on Investment" (EROI) as a means to quantify the effect of the transition on the abundance of energy. Nevertheless, an EROI value on its own is hardly meaningful (except when it is smaller than 1:1, or higher than 50:1); scholars would be more interested in whether the EROI of RE has met or will meet a threshold value which would indicate its sufficiency to sustain the current economic growth and societal well-being, termed minimum EROI.
Inimi De Eroi With Portraits
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Author :
language : en
Publisher:
Release Date : 1961
Inimi De Eroi With Portraits written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with categories.
Handbook Of Research Methods And Applications In Environmental Studies
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Author : Matthias Ruth,
language : en
Publisher: Edward Elgar Publishing
Release Date : 2015-08-28
Handbook Of Research Methods And Applications In Environmental Studies written by Matthias Ruth, and has been published by Edward Elgar Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-08-28 with Political Science categories.
This Handbook presents methods to advance the understanding of interdependencies between the well-being of human societies and the performance of their biophysical environment. It showcases applications to material and energy use; urbanization and tech
World On Fire
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Author : Mark Rowlands
language : en
Publisher: Oxford University Press
Release Date : 2021-05-21
World On Fire written by Mark Rowlands and has been published by Oxford University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-05-21 with Philosophy categories.
Mark Rowlands presents a novel analysis of three epoch-defining environmental problems: climate, extinction, and pestilence. Our climate is changing at a rate that is unprecedented and, if unchecked, disastrous. Species are disappearing hundreds or thousands of times faster than normal. COVID-19 has wreaked social and economic havoc but is merely the latest off a blossoming production line of emerging infectious diseases, many of which have the potential to be far worse. Rowlands establishes that all three problems are consequences of choices we have made about energy, which can be divided into two major forms: fuel and food. Focusing on food choices as far more central to the issue than commonly recognized, he argues that the solution is breaking our collective habit of eating animals. Rowlands shows that in doing so, we stem our insatiable hunger for land, which he identifies as central to the problems of extinction and pestilence. He explains that reversing the industrial farming of animals for food will first, substantially cut climate emissions, rapidly enough to allow sustainable energy technologies time to become viable alternatives; and most importantly, make vast areas of a land available for the kind of aggressive afforestation policy that he shows as necessary to bring all three problems under control. With World on Fire, Mark Rowlands identifies the source of our environmental ills and provides a compelling and accessible account of how to solve them.
Micii Eroi Harry Houdini
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Author : Javier Alonso López
language : ro
Publisher: Grup Editorial Litera
Release Date : 2020-06-29
Micii Eroi Harry Houdini written by Javier Alonso López and has been published by Grup Editorial Litera this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-06-29 with Juvenile Fiction categories.
Majoritatea eroilor pe care îi cunoaștem sunt fiinţe extraordinare, înzestrate cu puteri magice și purtând pe umeri o capă care flutură în vânt. Există însă și eroi în carne și oase, ca mine și ca tine, care uneori s-au înșelat, dar alteori au descoperit lucruri măreţe. Harry Houdini a fost unul dintre ei. Superputerile lui au fost o dexteritate uluitoare, antrenamentul demn de un atlet profesionist și strădania neobosită. Datorită lor a devenit unul dintre cei mai celebri magicieni din istorie, ale cărui trucuri de evadare au uimit o lume întreagă. Houdini a arătat că un truc ingenios se poate transforma într-un spectacol de magie senzaţional. Iată povestea lui.
Micii Eroi S Hawking
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Author : Javier Alonso Lopez
language : ro
Publisher: Grup Editorial Litera
Release Date : 2020-04-28
Micii Eroi S Hawking written by Javier Alonso Lopez and has been published by Grup Editorial Litera this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-04-28 with Juvenile Fiction categories.
Majoritatea eroilor pe care îi cunoaștem sunt fiinţe extraordinare, înzestrate cu puteri magice și purtând pe umeri o capă care flutură în vânt. Există însă și eroi în carne și oase, ca mine și ca tine, care uneori s-au înșelat, dar alteori au descoperit lucruri măreţe. Stephen Hawking a fost unul dintre ei. Superputerile lui au fost optimismul, dorinţa de a profita de fiecare zi și o curiozitate uriașă de a înţelege cum funcţionează Universul. Datorită acestora a demonstrat teoria Big Bangului, explozia care a dat naștere Universului, și a explicat ce sunt găurile negre, acele corpuri stranii din spaţiu care înghit tot ce ajunge în preajma lor. În ciuda bolii grave care i-a paralizat corpul încă din tinereţe, nu a încetat să studieze și nici nu și-a pierdut simţul umorului. Iată povestea lui!
A Comprehensive Guide To Solar Energy Systems
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Author : Trevor M. Letcher
language : en
Publisher: Academic Press
Release Date : 2018-05-17
A Comprehensive Guide To Solar Energy Systems written by Trevor M. Letcher and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-05-17 with Science categories.
A Comprehensive Guide to Solar Energy Systems: With Special Focus on Photovoltaic Systems, the most advanced and research focused text on all aspects of solar energy engineering, is a must have edition on the present state of solar technology, integration and worldwide distribution. In addition, the book provides a high-level assessment of the growth trends in photovoltaics and how investment, planning and economic infrastructure can support those innovations. Each chapter includes a research overview with a detailed analysis and new case studies that look at how recent research developments can be applied. Written by some of the most forward-thinking professionals, this book is an invaluable reference for engineers. Contains analysis of the latest high-level research and explores real world application potential in relation to developments Uses system international (SI) units and imperial units throughout to appeal to global engineers Offers measurable data written by a world expert in the field on the latest developments in this fast moving and vital subject
