CHAPTER – 14
SOURCES OF ENERGY
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Energy comes in different forms and one form can be converted to another.
For example if we drop a plate from a height, the potential energy of the plate
is converted mostly to sound energy when it hits the ground.
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If we light a candle, the process is highly exothermic so that the chemical
energy of the wax is converted into heat energy and light energy on burning.
A Good Source of Energy would be one
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which has high calorific value
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be easily accessible
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be easy to store and transport
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be economical
SOURCES OF ENERGY
Conventional Source of Energy
Non-Conventional Source of Energy
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Fossil Fuels
Eg. Coal & Petroleum
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Thermal Power Plant
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Hydro Power Plants
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Bio-Mass®
bio gas plant
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Wind Energy
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Solar Energy
Eg. Solar Cooker, Solar Cell Panel
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Energy From the Sea
Eg. Tidal & wave energy, O.T.
Energy
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Geothermal Energy
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Nuclear Energy.
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Amont the sources of energy, some of them get exhausted (Non-Renewable)
While some of them do not get exhausted, therefore called as Renewable
source of energy. Examples
1. Non Renewable source of energy®
Coal, Petroleum, Natural Gas
2. Renewable Source of energy®
Air, Water, Solar radiation, Geothermal
Energy, ocean waves etc.
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X-Science
CONVENTIONAL SOURCE OF ENERGY
1. Fossil Fuels : Fuels developed from the fossils. Eg. Coal & Petroleum.
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Formed over million of years ago have only limited reserves
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These are non-renewable source of energy
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India has about 6% share in the world reserved coal, that may last 250 years
more at the present rate of consumption.
Disadvantages of Burning Fossil Fuels
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released oxides of Carbon, Nitrogen, Sulphur (acidic in nature) cause Air
pollution & Acid rain & green-house effect.
Dynamo
Pressure
Cooker
Heat
(Fossil Fuel)
Bulb
Tennis Ball
fitted with metal plate
A Model of Thermo Electric Production.
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This is our Turbine for generating...