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Energy Harvesting


Energy Harvesting
  • Author : Alireza Khaligh
  • Publisher : CRC Press
  • Release : 2017-12-19
  • ISBN : 9781439815090
  • Language : En, Es, Fr & De
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Also called energy scavenging, energy harvesting captures, stores, and uses "clean" energy sources by employing interfaces, storage devices, and other units. Unlike conventional electric power generation systems, renewable energy harvesting does not use fossil fuels and the generation units can be decentralized, thereby significantly reducing transmission and distribution losses. But advanced technical methods must be developed to increase the efficiency of devices in harvesting energy from environmentally friendly, "green" resources and converting them into electrical energy. Recognizing this need, Energy Harvesting: Solar, Wind, and Ocean Energy Conversion Systems describes various energy harvesting technologies, different topologies, and many types of power electronic interfaces for stand-alone utilization or grid connection of energy harvesting applications. Along with providing all the necessary concepts and theoretical background, the authors develop simulation models throughout the text to build a practical understanding of system analysis and modeling. With a focus on solar energy, the first chapter discusses the I−V characteristics of photovoltaic (PV) systems, PV models and equivalent circuits, sun tracking systems, maximum power point tracking systems, shading effects, and power electronic interfaces for grid-connected and stand-alone PV systems. It also presents sizing criteria for applications and modern solar energy applications, including residential, vehicular, naval, and space applications. The next chapter reviews different types of wind turbines and electrical machines as well as various power electronic interfaces. After explaining the energy generation technologies, optimal operation principles, and possible utilization techniques of ocean tidal energy harvesting, the book explores near- and offshore approaches for harvesting the kinetic and potential energy of ocean waves. It also describes the required absorber, turbine, and generator types, along with the power electronic interfaces for grid connection and commercialized ocean wave energy conversion applications. The final chapter deals with closed, open, and hybrid-cycle ocean thermal energy conversion systems.

Uninhabited Air Vehicles


Uninhabited Air Vehicles
  • Author : National Research Council
  • Publisher : National Academies Press
  • Release : 2000-06-28
  • ISBN : 0309171776
  • Language : En, Es, Fr & De
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U.S. Air Force (USAF) planners have envisioned that uninhabited air vehicles (UAVs), working in concert with inhabited vehicles, will become an integral part of the future force structure. Current plans are based on the premise that UAVs have the potential to augment, or even replace, inhabited aircraft in a variety of missions. However, UAV technologies must be better understood before they will be accepted as an alternative to inhabited aircraft on the battlefield. The U.S. Air Force Office of Scientific Research (AFOSR) requested that the National Research Council, through the National Materials Advisory Board and the Aeronautics and Space Engineering Board, identify long-term research opportunities for supporting the development of technologies for UAVs. The objectives of the study were to identify technological developments that would improve the performance and reliability of “generation-after-next†UAVs at lower cost and to recommend areas of fundamental research in materials, structures, and aeronautical technologies. The study focused on innovations in technology that would “leapfrog†current technology development and would be ready for scaling-up in the post-2010 time frame (i.e., ready for use on aircraft by 2025).

Advances in Fuel Cells


Advances in Fuel Cells
  • Author :
  • Publisher : Elsevier
  • Release : 2007-04-23
  • ISBN : 0080471005
  • Language : En, Es, Fr & De
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Fuel cells have been recognized to be destined to form the cornerstone of energy technologies in the twenty-first century. The rapid advances in fuel cell system development have left current information available only in scattered journals and Internet sites. Advances in Fuel Cells fills the information gap between regularly scheduled journals and university level textbooks by providing in-depth coverage over a broad scope. The present volume provides informative chapters on thermodynamic performance of fuel cells, macroscopic modeling of polymer-electrolyte membranes, the prospects for phosphonated polymers as proton-exchange fuel cell membranes, polymer electrolyte membranes for direct methanol fuel cells, materials for state of the art PEM fuel cells, and their suitability for operation above 100°C, analytical modelling of direct methanol fuel cells, and methanol reforming processes. Includes contributions by leading experts working in both academic and industrial R&D Disseminates the latest research discoveries A valuable resource for senior undergraduates and graduate students, it provides in-depth coverage over a broad scope

Theory Design and Applications of Unmanned Aerial Vehicles


Theory  Design  and Applications of Unmanned Aerial Vehicles
  • Author : A. R. Jha, Ph.D.
  • Publisher : CRC Press
  • Release : 2016-11-18
  • ISBN : 9781315354019
  • Language : En, Es, Fr & De
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This book provides a complete overview of the theory, design, and applications of unmanned aerial vehicles. It covers the basics, including definitions, attributes, manned vs. unmanned, design considerations, life cycle costs, architecture, components, air vehicle, payload, communications, data link, and ground control stations. Chapters cover types and civilian roles, sensors and characteristics, alternative power, communications and data links, conceptual design, human machine interface, sense and avoid systems, civil airspace issues and integration efforts, navigation, autonomous control, swarming, and future capabilities.

Conservation Drones


Conservation Drones
  • Author : Serge A. Wich
  • Publisher : Oxford University Press
  • Release : 2018
  • ISBN : 9780198787617
  • Language : En, Es, Fr & De
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This book aims to further build capacity in the conservation community to use drones for conservation and inspire others to adapt emerging technologies for conservation.