Alternative og fornybare energikilder og teknologier

This book evaluates off-grid solar electrification in Africa by examining how political, economic, institutional, and social forces shape the adoption of off-grid solar technologies, including how issues of energy injustice are manifested at different levels and spaces. The book takes a historical, contemporary, and projective outlook using case studies from pre- and ongoing electrification communities in non-Western countries such as Ghana, Kenya, Rwanda, Senegal, Malawi, Tanzania, and Nigeria. Beyond the diverse nature of these countries in terms of their geographical location in West, East, and Southern Africa, each offers a different experience in terms of colonial history, economic and institutional infrastructure, social and cultural context, and level of adoption of off-grid solar technologies.  Notably, the book contributes to the off-grid solar and energy justice scholarship in low-income non-Western contexts. It examines various approaches to energy justice and does so by engaging with Western and non-Western philosophical notions of the concept. It takes into consideration the major principles of Ubuntu philosophy with the adoption of off-grid solar technologies, hence enriching the energy justice framework. Finally, the book interrogates the degree to which the social mission that catalysed the expansion of the off-grid solar sector is being undermined by broader structural dynamics of the capital investment upon which it is reliant. It also argues that the ascendance of off-grid solar electrification in Africa is transformative in that it enables millions of people without access to or facing uncertainties linked to centralised grid energy to have access to basic energy services.

Towards Net Zero in the Building Industry looks at the contributions that the building and construction industry can (and must) make to help achieve net zero carbon emissions. The building industry accounts for close to 40% of global emissions and this book brings together a global group of contributors from 15 countries to examine ways in which the industry can help with overall CO2 reduction. Coverage includes factors such as building design strategy, materials selection, use of local materials with a low carbon imprint, renewable energy use, energy conservation, greenery and appropriate aesthetics, building size and scale, climate suitability, building functionality and comfort, material recycling, and adoption of green policies. Chapter 6 is available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.

In diesem Buch werden die Grundlagen für die Ermittlung von Kurzschlussströmen behandelt. Die Berechnung der Ströme gehört mit zu den wesentlichen Aufgaben bei der Planung elektrischer Netze. Da die Netze zuverlässig und sicher betrieben werden müssen, ist die Berechnung durch internationale und nationale Normen standardisiert. In der gültigen IEC/VDE-Norm werden konkrete Rechenverfahren angewendet, die sich in vielen Jahrzehnten bewährt haben. Hierbei werden neue technische Entwicklungen laufend ergänzt. Vielfach sind jedoch die Hintergründe nicht mehr bekannt, so dass in diesem Buch diese Grundlagen beschrieben werden. Der Autor ist seit 1972 in der Normung der Kurzschlussstromberechnung tätig und hat die in dieser Zeit gewonnen Erkenntnisse zusammengetragen.

Take a journey through time with Windmills. This stunning book explores the history and ingenuity of windmills, from their earliest known designs to their modern applications as a sustainable energy source.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

This book discusses the microbiology of fermentation for the production of bioethanol from sugarcane. Coverage includes how selected yeasts improve ethanol yield and productivity concerning recent advances at genomic, transcriptomic, and proteomic levels, how microorganisms (bacteria and yeasts) interact with each other in fermentation vats, and the application of microbiological monitoring methods with safety and precision. Special attention is given to antimicrobial strategies used to decrease contamination. The book is aimed at professionals working in the bioethanol industry, as well as students and researchers studying biological and biotechnological aspects of applied matters such as industrial microbiology and industrial fermentations.The English translation of this book from its Portuguese original manuscript was done with the help of artificial intelligence (machine translation by the service provider DeepL.com). A subsequent human revision of the content was done by the author.Covers common microbiological monitoring techniques;Reviews selected yeasts used in the bioethanol industry;Examines the role of bacteria and native yeasts in ethanolic fermentation and methods to control their growth.

Parabolic Trough Solar Collectors: Thermal and Hydraulic Enhancement Using Passive Techniques and Nanofluids systematically and methodically examines all aspects of the essential and basic elements of parabolic trough solar collector (PTSC) design and performance enhancement techniques. The book provides thorough optical, thermal, and exergetic analyses along with a review of experimental and numerical studies performed on thermal augmentation methods, which includes the use of conventional fluids and advanced fluids such as nanofluids and hybrid nanofluids in PTSC. Moreover, the use of passive techniques, turbulators, and surface modifications with different shapes and configurations associated with PTSC is presented. The PTSC's thermal efficiency augmentation estimation with the utilization of different fluids (i.e. conventional or advanced fluids) is summarized and analyzed in each case study, and the ongoing patterns in hybrid nanofluid utilization are provided. Given the interdisciplinary nature of renewable energy systems design, this comprehensive reference will be an invaluable resource for engineering and industrial professionals involved in energy engineering design, power plant design, and solar energy systems design.Presents all state-of-the-art aspects of PTSC design and implementation;Hands-on reference for anyone involved in renewable energy systems design;Includes case studies.

This book presents a profile of the majority of hot springs in and around tourist destinations in Nepal.  In particular, there is a focus on  Pokhara, Jumla, the world- famous Annapurna region, Ruby Valley, and Api Nampa Conservation Area.  The chapter on health benefits of mineral hot springs provides a history of hot springs supported by a literature review and case study.   Further chapters explore the direct uses of geothermal energy for various purposes and power generation, together with a section on conventional hydrothermal resources.This book is of interest to the general  public, students, national and international researchers, energy planners, and health professionals.  The book is a valuable tool for sociologists who want to gain insight into the cultural and religious aspects of hot water mineral springs.

Make and use your own homemade natural gas from food scraps, garden trimmings, and animal waste! DIY Biogas presents the practical information you need to craft a recipe for your own renewable natural gas and propane substitute.Complete plans and parts lists are provided to build two different biogas digesters that help you learn, understand, and grow your biogas operation. With this hands-on, minds-on guide, you'll gain the knowledge you need to convert waste into energy. Whether you're looking for a unique science experiment or want to cook meals with your own backyard biogas, this book is the best place to start!With fuel prices and scarcity on the rise, it's time to re-learn how to meet our own energy needs and balance the energy inequity equation. Start harvesting and using local, renewable energy resources today!Paul Scheckel is a professional efficiency and renewable energy consultant, and a hands-on-off-grid homesteader. Having appeared twice on Ask This Old House, he is the author of The Homeowner's Energy Handbook and a frequent contributor to Mother Earth News magazine where he writes about energy efficiency, renewable energy, and the off-grid lifestyle. Paul has been using and promoting homemade biogas since 2013 through workshops and media. Information presented in this book is based on science and hands-on experience.

This book gathers the latest advances, innovations, and applications in the field of effective methods of calculation, resource-saving technologies, and advanced materials in civil and environmental engineering, as presented by leading international researchers and engineers at the XVIII International Scientific Conference Current Issues of Civil and Environmental Engineering ¿Lviv- Köice ¿ Rzeszów¿, held in Rzeszów, Poland, on September 6¿8, 2023. It covers highly diverse topics, including structural shaping and optimization; aspects of structural behavior and modeling; advanced analysis methods; experimental tests and numerical simulations; design codes, in particular Eurocodes and other national and regional limit state codes; and highway and bridges engineering. It also discusses modern architectural and structural solutions; innovative materials and products; durability and maintenance; fabrication and erection; sustainability in construction; renewable energy sources; heat, gas, and water supply; ventilation and air-conditioning; ecological and energy-saving technologies, modern water purification, and treatment technologies; and the protection of water ecosystems. This book, which was selected by means of a rigorous international peer-review process, highlights numerous exciting ideas that will spur novel research directions and foster multidisciplinary collaborations.

Der Glaube an die Machbarkeit der sogenannten Energiewende durch die volatilen Energieerzeuger Windkraft und Photovoltaik wird genährt durch das trügerische Arbeiten mit Mittelwerten, das Täuschen mit statistischen Falschangaben sowie das Weglassen wichtiger Konsequenzen.Auch der Umgang mit den Größenordnungen und die Umrechnung zwischen Mega, Giga, Tera bereitet vielfach etliche Probleme und führt daher zu unglaublichen Trugschlüssen in Bezug auf die Machbarkeit und Durchführung der Energiewende, ganz zu schweigen von den technischen und ökonomischen Konsequenzen.Die gegenwärtig beschrittenen Wege führen in ein unausweichliches Chaos, nämlich den Verlust einer zuverlässigen und bezahlbaren Energieversorgung, die für eine Industrienation unverzichtbar ist.Im vorliegenden Buch möchten die Autoren die Leser durch sorgfältig beschriebene Analysen auf der Basis von Daten offizieller Stellen mitnehmen, damit sie sich ein eigenes Urteil über die sogenannte Energiewende und deren Konsequenzen bilden können.

This book thoroughly examines the aims of green urbanism, providing a perspective to help responding to the growing environmental challenges posed by the enormous increase in human needs. The book gives insights about architectural intervention in urban planning which provides green design strategies in a way that improves the efficiency of building in terms of energy consumption and environmental conservation. The book also gives attention to the paradigm of the `intermediate city', thus, helping in overcoming the challenges posed by the growing urbanization process. Finally, the book gives a futuristic vision of cities, anticipating their challenges and providing possible solutions for them. The book targets a wide audience interested in implementing the SDG goals in energy and green urban planning, and those interested the interdisciplinary nature of green urbanization and alternative and renewable energy accommodates.The book is a culmination of selected research papers from the 4th version of the International Online Conference on Green Urbanism (GU) of Roma Tre University, Italy (2020) & the 3rd version of the International Online Conference on Alternative and Renewable Energy Quest (2020).

Custom Power Devices for Efficient Distributed Energy Systems presents a range of novel ideas and concepts based on renewable energy-fed power generation and control, offering avenues to efficient utilization and improved power quality and addressing power quality issues such as harmonics compensation, supply current balancing, and neutral current compensation. The book begins by introducing distributed power systems within the global renewable energy context, reviewing different types of renewable energy sources and distributed power generation systems, and detailing custom power device design and modeling. This is followed by individual chapters, providing in-depth coverage of specific techniques and applications with insights into various topologies, as well as control algorithms, used for power control in a range of distributed energy conversion systems, such as solar, wind, hydro, and other power sources. Finally, power quality issues in renewable energy distributed generation are discussed and addressed in detail. This is a valuable resource for researchers, faculty, and advanced students with an interest in power generation systems, renewable energy, and power systems engineering, as well as practicing engineers, R&D professionals, managers, and other industry personnel in the renewable energy sector.

Performance Enhancement and Control of Photovoltaic Systems brings together the latest advances in photovoltaic control and integration, with various embedded technologies applied to standalone and grid connected systems in normal and abnormal operating conditions, with new approaches intended to overcome a number of critical limitations in using PV technology. The book begins by introducing modern photovoltaic (PV) systems, system integration, materials, and thermodynamic analysis for improved performance, before examining applications in industrial processes, artificial neural network technology, and economic analysis of PV systems. In-depth chapters then demonstrate the use of advanced control and optimization techniques, covering the use of new embedded technologies, through different applications such as MPPT controllers, solar trackers, cleaning systems, cooling systems, and monitoring systems. Applications of photovoltaic energy systems in distributed generation, microgrid, and smart grid systems will be considered.

This book covers the present and future of bioethanol biorefinery technologies. It discusses the efficient use of feedstock in bioethanol production, and critically reviews the environmental sustainability of bioethanol production. In addition, it describes the integrated production of bioelectricity, biopolymers, organic acids, and other biomolecules, as well as the use of process-related liquid and solid byproducts and/or wastes during bioethanol generation.Since the bioethanol industry has also led the automotive industry to explore new avenues, this book summarizes the various aspects of ethanol motorization, hybrid engine development, and biofuel electrification. For decades, clean and renewable alternatives have been sought to reduce dependence on petroleum-based fossil fuels and CO2 emissions. Bioethanol appears as one of the best solutions for the production of biofuels, bioenergy and biochemicals, along with the establishment of new biorefinery concepts and a circular bioeconomy. Therefore, the ideas and technologies presented in this book contribute to the UN Sustainable Development Goal 7: Affordable and Clean Energy.This book is a useful reference for postgraduate students and researchers interested in biorefinery and biofuel technologies, both in academia- and commercial laboratories. Early career scientists can use it to fast track into the field. Advanced scientists will find it helpful to gain a broader overview of the field beyond their area of specialization.

The objective of this book is to help readers better understand the links between fossil fuel, greenhouse gas, and climate change in a clear, explanatory format. It avoids sensationalism and politics, using plain language to explain the details of the science, how the science works, and how we know what we know. It describes the history of fossil fuels, why fossil fuel combustion products are a problem, and what must be done to address the impacts on climate. It provides details about a number of energy engineering solutions to replace fossil fuels and technology called geoengineering that can cool the planet and directly remove greenhouse gases from the atmosphere. Some of these technologies can be implemented almost immediately, and others may be applied in the future. Many young people are pessimistic about the future and prepared to give up on addressing climate change. The book strives to maintain hope throughout that humanity can solve this and other environmental problems. The climate crisis was caused by human engineering, and human engineering can fix it. The goal is to produce informed readers that can have responsible discussions with their political leaders about implementing solutions to climate change.

This book is about environmental and climate legal protection in the energy transition. The Paris Agreement has a binding commitment of holding the global temperature increase to 2(deg)C while pursuing efforts to limit it to 1.5(deg)C. To cope with the negative effects of climate changes and mitigate greenhouse gas emissions, one of the primary responses has been the deployment of renewable energy sources, transiting from fossil fuels to sustainable electricity production. However, renewable energy sources can also cause significant environmental impacts. Wind energy, for instance, can impact biodiversity, such as birds and bats, killing them when colliding with turbines and affecting their migration and nesting.This results in conflicts in environmental law.  This book questions whether, in the energy transition, the generation of electricity from renewable sources to protect the climate is compatible with the protection of the environment, both interests in environmental law.To address this question, this book follows a legal-environmental perspective and assesses the common problem of solving those internal environmental conflicts in Brazilian and German law to understand and compare whether and how both legal systems solve the conflicts by compatibilizing the protection of the climate with other environmental interests. The legal analysis focuses on land-use planning and environmental licensing, assessing similarities and differences, and evaluating the results, identifying what one country can learn from the other.

The continuous increase of wind power penetration levels in Egypt makes wind a critical component of power generation in the grid. Studying wind power quality issues and the interaction between wind turbines and the grid is necessary and imperative. The authors present research on power quality and grid code issues, harmonics and wind power, voltage stability improvement using STATCOM, control techniques for active power filters, and the economics of electrical wind energy. The simulation for all of the studies presented is carried out in a MATLAB/Simulink environment using the Simulink power system toolbox. The book also presents case studies on an electrical network-connected wind energy conversion system and gives an overview of the feasibility of having wind power plants in several regions in Egypt, along the Gulf of Suez, on both sides of the Nile, the Mediterranean Sea, and South Upper Egypt.

Process integration and intensification are means to improve the sustainability metrics of the industrial processes, balancing the pillars of economy, environment, and social demand. The book covers a sequential framework for the design and operation of microalgae-based facilities using process integration and intensifi cation, discusses products and applications,and provides a global perspective with contributions from renowned experts. Covers relevant opportunities of process integration and intensification applied to microalgae-based systems. Provides a complete review of the state of the art of these industrial approaches. Presents new insights into industrial sustainability.

This book focuses on the numerous energy harvesting techniques and their system implementation towards the fulfilment of energy requirements in compact electronic devices. These cover a wide range of applications in portable devices, bio-medical services, agriculture needs, mechanical systems, sensor networks, automobiles, food sector, home appliances, industry needs, etc. The authors detail energy harvesting methods using the latest technologies in acoustics, bio-chemical, thermal, artificial light, fluid flow, vibrations, EM energy, RF energy, piezoelectric, electrostatic, photovoltaic, thermoelectric, hybrid harvesting, ultrasonic, infrared, light, wind, and solar. The book is intended for researchers, academics, professionals, and students in energy harvesting.

This book describes for first time the synthesis and intensified process design in the production of top biofuels. The production of biofuels is not new. In 2019, global biofuel production levels reached 1,841 thousand barrels of oil equivalent per day, in stark comparison to the 187 thousand barrels of oil equivalent per day that was produced in 2000. Growth has largely been driven by policies that encourage the use and production of biofuels due to the perception that it could provide energy security and reduce greenhouse gas emissions in relevant sectors. From a technical point of view, almost all fuels from fossil resources could be substituted by their bio-based counterparts. However, the cost of bio-based production in many cases exceeds the cost of petrochemical production. Also, biofuels must be proven to perform at least as good as the petrochemical equivalent they are substituting and to have a lower environmental impact. The low price of crude oil acted as a barrier to biofuels production and producers focussed on the specific attributes of biofuels such as their complex structure to justify production costs. Also, the consumer demand for environmentally friendly products, population growth and limited supplies of non-renewable resources has now opened new windows of opportunity for biofuels. The industry is increasingly viewing chemical production from renewable resources as an attractive area for investment. This book uniquely introduces the application of new process intensification techniques that will allow the generation of clean, efficient and economical processes for biofuels in a competitive way in the market.

Understanding Geologic Carbon Sequestration and Gas Hydrate from Molecular Simulation systematically introduces CO2 geological sequestration and gas hydrate at the molecular-scale, with research including interfacial properties of multiphase, multicomponent systems, hydrogen bonding properties, adsorption characteristics of CO2CH4 in the pore, kinetic properties of decomposition/nucleation/growth of gas hydrate, the influence of additives on gas hydrate growth dynamics, and hydrate prevention and control technology. This book focuses on research-based achievements and provides a comprehensive look at global progress in the field. Because there are limited resources available on carbon geologic sequestration technology and gas hydrate technology at the molecular level, this book fills a gap in scientific literature and elucidates on further research.

Computational Tools for Energy Harvesting Applications presents the latest applications of energy harvesting methods for renewable energy systems. The book provides readers with the computational tools and algorithms for energy harvesting, explaining the mathematical basis behind their development and application and analyzing the latest developments. Each chapter provides a review of the fundamentals and basic theory behind each energy harvester, the working principles, and the latest practical applications. The mathematical techniques and computational tools are provided for response analysis and optimization of diverse energy harvesters, including from fixed renewable energy systems - wind, solar, etc. - and portable devices such as PEM fuel cells. This is a valuable reference for students and researchers working in the field of renewable energy harvesting and its application, as well as electrical and mechanical engineers.

Advances of Energy from Waste: Transformation Methods, Applications and Limitations Under Sustainability provides advanced, systematic information on the environmental transformation of waste and pollutants of various origins into useful products, contributing to the development of the local economy and increasing the sustainability of the energy sector. In addition, remarkable competences in design, performance, efficiency, and implementation of diverse systems utilized for waste energy recovery are evaluated. The book also includes recent advances in biomass-derived green catalysts for various catalytic applications, along with the challenges of controlled synthesis and the impact of morphological, physical, and chemical properties on their adsorption or desorption capability.

Decarbonization Strategies and Drivers to Achieve Carbon Neutrality for Sustainability emphasizes the significance of various decarbonization strategies. Sections cover contributions of bioenergy to decarbonization, non-fossil energy targets, the role of wind energy, hydrogen energy, potential of geothermal energy, nuclear energy, wind to energy, role of electri?cation and carbon capture, utilization and storage (CCUS) technologies, and more. The book aims to explain how reducing petroleum consumption and supplementing alternate sources of renewable fuels is vital and would strengthen decarbonization.

The book examines the typological and technological constitution of the principal advanced façade systems in the contemporary design and experimental scenario, proposing itself as a knowledge and operational tool currently lacking in the technical literature of the sector at an international level. It considers the field of advanced façade systems in a scientific way, constituting a support for the study and the executive design. The book investigates in detail, in an analytical form, the constitution of the components on a typological and geometrical, functional and constructive level, on the basis of the documents and knowledges acquired from the essential contemporary production and construction references. At the same time, the book is configured in a handbook form as a reference for understanding and application with respect to traditional and complex façade systems. For each main type of façade, the book provides explanations and scientific information for investigating and designing the advanced façades according to the characteristics of the mullions and transoms façade system (stick system), of the structural sealant glazing façade system, of the unit façade system, of the suspended façade system and of the double-skin façade system.

Modern Optimization Techniques for Smart Grids presents current research and methods for monitoring transmission systems and enhancing distribution system performance using optimization techniques considering the role of different single and multi-objective functions. The authors present in-depth information on integrated systems for smart transmission and distribution, including using smart meters such as phasor measurement units (PMUs), enhancing distribution system performance using the optimal placement of distributed generations (DGs) and/or capacitor banks, and optimal capacitor placement for power loss reduction and voltage profile improvement. The book will be a valuable reference for researchers, students, and engineers working in electrical power engineering and renewable energy systems.Predicts future development of hybrid power systems;Introduces enhanced optimization strategies;Includes MATLAB M-file codes.