25-08-2017, 09:32 PM
NON CONVENTIONAL ENERGY SOURCES THEIR MERITS AND DEMERITS”
NON CONVENTIONAL.ppt (Size: 682.5 KB / Downloads: 14)
Advantages:
Pollution free.
Available in plenty.
Disadvantages:
High initial cost.
It requires a large area for the system to be efficient in providing a source of electricity.
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
TIDAL ENERGY
Tide is periodic rise and fall of the water level of the sea.
This rise and fall of water level occurs due to the attraction of sea water by the moon.
When the water is above the mean sea level, it is called flood tide and when the level is below the mean level, it is called ebb tide.
These tides can be used to produce electrical power which is known as tidal power.
Advantages:
It is pollution free.
Renewable source of energy.
It can meet high demand of electricity
Disadvantages:
The supply of power is not continuous as it depends upon the timing of tides. Therefore some arrangements (double basin or double basin with pump storage) must be made to supply the continuous power.
High installation cost.
FUEL CELL ENERGY
Fuel cells are electrochemical devices that combines hydrocarbon fuel with oxygen to produce electricity and heat.
The fuel cell consist of cathode, anode and an electrolyte. Nickel is used as a catalyst in fuel cells.
The cathode side receives oxygen from the surrounding air and hydrogen is formed by the reforming process.