18-06-2012, 04:28 PM
ENERGY SOURCES ON NON CONVENTIONAL
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INTRODUCTION
Energy is basically the capacity of a body to do work.
The different forms of energy are: Mechanical energy, Thermal (or) Heat energy, Chemical energy, Electrical energy Nuclear energy, Electromagnetic energy, Gravitational energy.
The S.I unit of energy is Joule.
There are 2 types of energy sources: conventional energy sources and non conventional energy sources.
Conventional energy sources include fossil fuel energy and nuclear energy.
It is a non renewable source of energy.
Non conventional energy sources include wind energy, tidal energy, solar energy, bio energy & fuel cell energy.
It is renewable source of energy
Solar Energy
The energy that is produced from sun is known as solar energy.
The Sun’s energy comes from nuclear fusion reaction that takes place deep in the sun, where hydrogen nucleus fuse into helium nucleus.
When such a reaction takes place then tremendous amount of energy is produced which is escaped into the space.
About 15% of sun’s energy is absorbed by earth’s atmosphere, some part is absorbed by earth’s surface and rest is reflected back to space.
Wind Energy
Winds are caused because of two factors.
The absorption of solar energy on the earth’s surface and in the atmosphere.
The rotation of the earth about its axis and its motion around the sun.
Because of these factors, alternate heating and cooling cycles occur, differences in pressure are obtained, and the air is caused to move.
Wind energy has potential to be used as a source of power.
This can be judged from the fact that energy available in the wind over the earth’s surface is estimated to be 1.6x107 K.W
And the energy available is free and clean.
Bio Gas Energy
Bio gas is generated through a process of anaerobic degradation of Bio Mass.
Bio Mass is organic matter produced by plants, both terrestrial (those grown on land) and aquatic (those grown in water) and their derivatives.
It includes forest crops and residues, crops grown especially for their energy content on “energy farms” and animal manure.
Unlike coal, oil and natural gas, which takes Millions of years to form, bio mass can be considered as a renewable energy source .
It can also be considered a form of solar energy as the latter is used indirectly to grow these plants by photosynthesis.
Hence,
solar energy –>Photosynthesis –> Bio Mass->energy generation
[attachment=24752]
INTRODUCTION
Energy is basically the capacity of a body to do work.
The different forms of energy are: Mechanical energy, Thermal (or) Heat energy, Chemical energy, Electrical energy Nuclear energy, Electromagnetic energy, Gravitational energy.
The S.I unit of energy is Joule.
There are 2 types of energy sources: conventional energy sources and non conventional energy sources.
Conventional energy sources include fossil fuel energy and nuclear energy.
It is a non renewable source of energy.
Non conventional energy sources include wind energy, tidal energy, solar energy, bio energy & fuel cell energy.
It is renewable source of energy
Solar Energy
The energy that is produced from sun is known as solar energy.
The Sun’s energy comes from nuclear fusion reaction that takes place deep in the sun, where hydrogen nucleus fuse into helium nucleus.
When such a reaction takes place then tremendous amount of energy is produced which is escaped into the space.
About 15% of sun’s energy is absorbed by earth’s atmosphere, some part is absorbed by earth’s surface and rest is reflected back to space.
Wind Energy
Winds are caused because of two factors.
The absorption of solar energy on the earth’s surface and in the atmosphere.
The rotation of the earth about its axis and its motion around the sun.
Because of these factors, alternate heating and cooling cycles occur, differences in pressure are obtained, and the air is caused to move.
Wind energy has potential to be used as a source of power.
This can be judged from the fact that energy available in the wind over the earth’s surface is estimated to be 1.6x107 K.W
And the energy available is free and clean.
Bio Gas Energy
Bio gas is generated through a process of anaerobic degradation of Bio Mass.
Bio Mass is organic matter produced by plants, both terrestrial (those grown on land) and aquatic (those grown in water) and their derivatives.
It includes forest crops and residues, crops grown especially for their energy content on “energy farms” and animal manure.
Unlike coal, oil and natural gas, which takes Millions of years to form, bio mass can be considered as a renewable energy source .
It can also be considered a form of solar energy as the latter is used indirectly to grow these plants by photosynthesis.
Hence,
solar energy –>Photosynthesis –> Bio Mass->energy generation