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Generation of Electricity through Different Ways

Summary rating: 5 stars (287 Ratings)
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words : 600 

Book Abstract by: mamoonmeister

Author : Mamoon Riaz
Published: February 12, 2007
Generation of Electricity through Different Ways:There are many ways through which electricity is generated. Some of them are given below; CoalHydropowerPetroleumNatural GasNuclear EnergySolar EnergyWind PowerExplanation to all of the above mentioned ways1. CoalElectricity Generation through Coal: Coal is used as a solid fuel to produce electricity and heat through combustion. When coal is used for electricity generation, it is usually pulverized and then burned in a furnace with a boiler. The furnace heat converts boiler water to steam, which is then used to spin turbines which turn generators and create electricity. Usage: 40% of the world electricity production uses coal, and the total known deposits recoverable by current technologies are sufficient for 300 years use at current usage levels. World coal consumption is about 5,800 million tons annually, of which about 75% is used for the production of electricity. The People's Republic of China and India uses about 1,700 million tons annually, forecast to exceed 3,000 million tons in 2025. The USA consumes about 1,100 million tons of coal each year, using 90% of it for generation of electricity. Coal is the fastest growing Energy source in the world, with coal use increasing by 25%.2. Hydropower:Meaning:Hydroelectric is a way through which electricity is generated by the flow of water.Electricity Generation through Hydral power:Most hydroelectric power comes from the potential energy of water (stored in a dam) driving a water turbine and generator. Hydroelectricity is a renewable energy source. The energy extracted from water depends not only on the volume but on the difference in height between the source and the water's outflow. This height difference is called the head. The amount of potential energy in water is proportional to the head. To obtain very high head, water for a hydraulic turbine may be run through a large pipe called a penstock.Relation:The amount of energy E released by lowering an object of mass “m” by a height “h” in a gravitational field is “E = mgh” where “g” is the acceleration due to gravity. The power is related to the mass flow rate. E = mgh t tAs “P” is equal to “E / t” and substituting “m / t” in terms of the volume of liquid moved per unit time “φ” and the density of water “ρ”, we arrive at the usual form of this expression: P = φρg.hSome hydropower systems such as water wheels can draw power from the flow of a body of water without necessarily changing its height. In this case, the available power is the kinetic energy of the flowing water. P = 1ρφv2 2where “v” is the velocity of the water,Usage:Aluminum processing requires substantial amounts of electricity, and often dedicated hydroelectric projects are built to serve aluminum electrolytic plants. Although hydropower currently provides about one fifth of the world’s electricity supply, development of the world’s remaining technical potential could, by no means, cover the growth in future demand. Now hydropower provides about 19% (2 650 TWh/yr) of the world’s electricity supply. The hydropower world capacity in 1994, with an estimated amount of 657 GW, was composed by the participation of the OECD 55.4%, Former Soviet Union and Central and Eastern Europe 12.3%, South and Central America 14.2%, China 6.6%, South Asia 3.9%, Africa 3.1%, and the Rest of the World 4.5%. It is expected for year 2010 a growth trend of the hydropower capacity share of South and Central America, China and South Asia and a world total of 948 GW.

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Comments & Reviews about Generation of Electricity through Different Ways

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  1. 0 Ratings Thursday, September 18, 2008
    1

    gadhisusnu

    Generation of Electricity through Different Ways

    By writing 300 more words you could have wrtten briefly about the other forms of Power generation like Wind Energy, Nuclear etc., and/or campaigned for Clean Power even if the article had not stressed that point. Your write up on i.e Coal Based Power Generation and Hydel Power is punctilious.

  2. 0 Ratings Monday, December 15, 2008
    2

    DrSarbjitSingh

    Generation of Electricity through Different Ways

    Congratulations for writing so well about Hydroelectric power systems. You may update this summary by adding more about generation of electricity through wind turbines , sea tides, solar power towers , Gas Turbines , Nuclear plants

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