Xem 1-18 trên 18 kết quả Wind energy handbook
  • As environmental concerns have focused attention on the generation of electricity from clean and renewable sources wind energy has become the world's fastest growing energy source. The Wind Energy Handbook draws on the authors' collective industrial and academic experience to highlight the interdisciplinary nature of wind energy research and provide a comprehensive treatment of wind energy for electricity generation.

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  • The second edition of theWind Energy Handbook seeks to reflect the evolution of design rules and the principal innovations in the technology that have taken place in the ten years since the first edition was published. A major new direction in wind energy development in this period has been the expansion offshore and so the opportunity has been taken to add a new chapter on offshore wind turbines and wind farms.

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  • Wind energy is one of the most prominent renewable energy sources today. The increasing concerns with environmental issues are driving the search for more sustainable electrical sources. Wind energy along with solar energy, biomass and wave energy are possible solutions for environmentally friendly energy production. The initialization of wind power installation, which started in the beginning of 1980s, is very much related to the oil crises of the mid 1970s.

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  • This book includes solar energy, wind energy, hybrid systems, biofuels, energy management and efficiency, optimization of renewable energy systems and much more. Subsequently, the book presents the physical and technical principles of promising ways of utilizing renewable energies. The authors provide the important data and parameter sets for the major possibilities of renewable energies utilization which allow an economic and environmental assessment.

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  • In electrical power generation system the present trend is to maximize the renewable energy penetration ratio as much as possible. Among the renewable energy sources such as wind, solar, biogas/biomass, tidal, geothermal, etc., wind energy has the huge potential to play an important role in energy market along with conventional energy sources. Therefore, reasonably the research on wind power is progressing rapidly.

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  • Wind power generation is considered as the most economic viable alternative within the portfolio of renewable energy resources. Among their advantages are the large number of potential sites for erection and the rapidly evolving technology with many suppliers offering from the individual turbine set to even turnkey projects. The disadvantages of wind energy include high capital costs and lack of controllability on the discontinuous or intermittent resource.

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  • As the fastest growing source of energy in the world, wind has a very important role to play in the global energy mix. This becomes increasingly apparent as many countries begin to phase out traditional fossil fuels, while some re-evaluate their comfort level with nuclear power generation. The conversion of wind’s kinetic energy into another desired form dates back millennia. The years since have afforded some time for maturation of the technology.

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  • Wind tunnels are the primary research tools used in aerodynamic research. They are used to study the eff ects of air moving past solid objects. Although great advances in computational methods have been made in recent years, wind tunnel tests remain essential for obtaining the full range of data required to guide detailed design decisions for various practical engineering problems

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  • Renewable energy sources such as solar power, wind power, hydroelectric power, geothermal power, and so on have attracted much attention as alternatives to fossil fuels, because toxins and pollutants are not produced by these sources. For this reason, these energy sources have come to be known as clean energy.

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  • Tham khảo sách 'wind tunnels and experimental fluid dynamics research_2', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Humanity is facing several critical global challenges at the beginning of the 21st century. One of which includes the quest for alternative energy resources that mitigate the dependence on fossil fuels. Whereas fossil fuels are available in situ at all times, the utilisation of renewal energies has to cope with large temporal fl uctuations ranging from seconds to seasons.

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  • During the last two decades, increase in electricity demand and environmental concern resulted in fast growth of power production from renewable sources. Wind power is one of the most efficient alternatives. Due to rapid development of wind turbine technology and increasing size of wind farms, wind power plays a significant part in the power production in some countries.

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  • Everything we consume or use requires energy to produce and package, to distribute to shops or front doors, to operate, and then to be got rid ofi. The global demand for energy is expected to increase but conventional energy sources are limited and have carbon emissions to the environment. The utilization of renewable energy sources such as wind energy, or solar energy, among others, is currently of greater interest.

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  • Engineering for sustainability is an emerging theme for the twenty-first century, and the need for more environmentally benign electric power systems is a critical part of this new thrust. Renewable energy systems that take advantage of energy sources that won’t diminish over time and are independent of fluctuations in price and availability are playing an ever-increasing role in modern power systems.

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  • Induction machines have become the staple for electromechanical energy conversion in today’s industry; they are used more often than all other types of motors combined. Several factors have made them the machine of choice for industrial applications vs. DC machines, including their ruggedness, reliability, and low maintenance [1, 2]. The cage-induction machine is simple to manufacture, with no rotor windings or commutator for external rotor connection. There are no brushes to replace because of wear, and no brush arcing...

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  • The most important fact related with fluid motion is to understand the fluid patterns, and the flow structure ‐ vortices, recirculation zones, high mix regions, poor mix regions, calm regions, to name a few. Moreover, most of the flows have turbulent characteristics and turbulence remains one of the unsolved problems in physics. No one knows how to obtain stochastic solutions to the well‐posed set of partial differential equations that govern turbulent flows.

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  • An engine or motor is a machine designed to convert energy into useful mechanical motion.[1][2] Heat engines, including internal combustion engines and external combustion engines (such as steam engines) burn a fuel to create heat which is then used to create motion. Electric motors convert electrical energy into mechanical motion, pneumatic motors use compressed air and others, such as clockwork motors in wind-up toys use elastic energy. In biological systems, molecular motors like myosins in muscles use chemical energy to create motion....

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  • The wind is a free, clean, and inexhaustible energy source. It has served humankind well for many centuries by propelling ships and driving wind turbines to grind grain and pump water. Denmark was the first country to use...

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