File Name: renewable energy and other alternative energy sources .zip
Technology to utilise the forces of nature for doing work to supply human needs is as old as the first sailing ship. But attention swung away from renewable sources as the industrial revolution progressed on the basis of the concentrated energy locked up in fossil fuels. This was compounded by the increasing use of reticulated electricity based on fossil fuels and the importance of portable high-density energy sources for transport — the era of oil.
Jump to navigation. Renewable power is booming , as innovation brings down costs and starts to deliver on the promise of a clean energy future. American solar and wind generation are breaking records and being integrated into the national electricity grid without compromising reliability. Biomass and large hydroelectric dams create difficult tradeoffs when considering the impact on wildlife, climate change, and other issues. Renewable energy, often referred to as clean energy , comes from natural sources or processes that are constantly replenished.
Sustainable energy is energy produced and used in such a way that it "meets the needs of the present without compromising the ability of future generations to meet their own needs. The energy transition to meet the world's needs for electricity, heating, cooling, and power for transport in a sustainable way is widely considered to be one of the greatest challenges facing humanity in the 21st century. Worldwide, nearly a billion people lack access to electricity , and around 3 billion rely on smoky fuels such as wood, charcoal or animal dung to cook. Air pollution from fossil fuels is estimated to cause 3 million deaths each year, and air pollution from use of dirty cooking fuels is estimated to cause around 4 million deaths each year. In general, renewable energy sources such as solar , wind , and hydroelectric energy are widely considered to be sustainable. However, aspects of some renewable energy projects, such as the clearing of forests for the production of biofuels , can lead to similar worse environmental damage than using fossil fuel energy. Nuclear power is a low-carbon source and has a safety record comparable to wind and solar,  but radioactive waste and the risk of major accidents are disadvantages of this technology.
Alternative energy refers to energy sources other than fossil fuels such as coal, petroleum, and diesel and includes all renewable and nuclear energy sources. Nuclear energy is produced by using elements like uranium and thorium, which cannot be replenished and have a finite amount in existence. Our days using fossil fuels are numbered, and so any and all alternative energy sources are beneficial over traditional sources. Another huge advantage is that many of them do not require the same damaging and expensive extraction techniques, as much of it is available to us here on the surface. If you have been thinking of lowering your reliance on fossil fuels, and are wondering how to get started, you can look into how to choose clean energy with our handy guide. There is a surprising number of forms of alternative energy, some well known, while others are relatively unheard of.
Alternative Energy Sources is designed to give the reader, a clear view of the role each form of alternative energy may play in supplying the energy needs of the human society in the near and intermediate future years. The two first chapters on energy demand and supply and environmental effects, set the tone as to why the widespread use of alternative energy is essential for the future of human society. The third chapter exposes the reader to the laws of energy conversion processes, as well as the limitations of converting one energy form to another. The fourth, fifth and sixth chapters are expositions of fission and fusion nuclear energy. The following five chapters seventh to eleventh include detailed descriptions of the most common renewable energy sources — wind, solar, geothermal, biomass, hydroelectric — and some of the less common sources, such as tidal and wave energy. The fourteen chapters in the book have been chosen so that one may fit a semester University course around this book.
Not a MyNAP member yet? Register for a free account to start saving and receiving special member only perks. Fossil-fuel dominated electricity generation in the United States and China has enormous environmental consequences.
Muscle power (human or animal) did just about everything else. All these energy sources came from the sun, since solar energy drove wind and rain, grew trees.Oplotiref 21.12.2020 at 10:08
Keywords: Renewable Energy Sources, Alternative Energy, Wind Power Generator, Solar Pollution of atmospheric air and other elements of the natural.MathГas N. 25.12.2020 at 09:01
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