E-book Particulars :
Language English
Pages 438
Format PDF
Measurement 23.7 MB


Hydroelectric Energy Renewable Energy and the Environment by Bikash Pandey and Ajoy Karki


Hydropower generates over 1000 GW globally, producing greater than 4000 TWh annually, round 16.5% of the world’s whole electrical energy. This makes it by far the largest supply of renewable electrical energy when the world is racing towards time to fight local weather change by greening its vitality provide. Though water wheels had been utilized by people as a supply of vitality since antiquity, industrialscale hydropower required the growth of recent generators beginning in the first half of the nineteenth century, constructing on fundamentals of hydraulic machines spelled out by the nice mathematician, Euler, half a century earlier.

Hydroelectricity noticed a interval of speedy progress beginning late in the nineteenth century with the discovery and proliferation of alternating present, progress in manufacturing and metallurgy, and breakthroughs in civil engineering, which enabled the building of enormous dams. By 1940, over 1500 dams provided 40% of the electrical energy in the United States. Development of latest hydroelectric initiatives slowed in the 1960s when issues started to develop about the social and environmental challenges related to giant dams. Along with different renewable vitality applied sciences, hydroelectricity has a essential position to play in the ongoing world transition to wash vitality.


Though ranging from a small base and at present contributing solely a small fraction to the world’s electrical energy provide, wind and photo voltaic vitality are rising quickly, already including extra gigawatts annually than hydroelectricity does. Along with its personal technology, hydroelectricity helps the progress of all renewables by offering vitality storage as energy grids round the world try and combine ever increased percentages of variable renewable vitality. Funding into pumped storage hydroelectricity is predicted to develop alongside different renewables. Hydroelectricity supplies an alternative choice to new funding in coal-based technology for industrializing international locations whose energy wants are rising quickly.

Coupled with different renewables, hydroelectricity supplies these international locations a pathway to low-carbon progress. Elevated funding into small hydropower options prominently in deliberate local weather actions of most international locations each for supplying their grids and for offering electrical energy in areas of the international locations that stay underelectrified. The place sources exist, micro-hydro typically supplies the lowest price supply of energy to distant communities. The majority of this e-book covers the engineering disciplines of civil engineering, hydrology, hydraulics, and mechanical and electrical engineering as they relate to hydroelectricity.


The authors, Bikash Pandey and Ajoy Karki, have written totally different chapters based mostly on their areas of experience. Along with technical topics, they’ve explored the economics of hydroelectric initiatives, social and environmental concerns, and engagement with communities needed for his or her growth. Chapter 1 probes the historical past of water energy, the growth of hydroelectricity, and its persevering with relevance as we speak. Chapter 2 goes into the primary physics of how falling water generates energy, and describes the essential sorts of trendy hydroelectric methods in use as we speak and their main parts.

Chapter 3 describes how website choice and feasibility research are carried out. Chapters 4 by 8 clarify the ideas behind how civil buildings of hydroelectric vegetation are designed, together with the consumption, headrace, gravel lure, settling basin, forebay, penstock, and the powerhouse. Chapters 9 by 12 discover the design of several types of hydraulic generators, that are in use and being developed. Chapter 13 focuses on the electrical features of hydroelectricity together with the workings of mills, controllers, and energy transmission and distribution. Chapter 14 discusses the financial evaluation of infrastructure initiatives. Chapter 15 describes the social and environmental challenges of hydroelectric venture and participatory processes required for sustainable growth.

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