Green Power and Other Renewable Source of Energy
Green Power and Other Renewable Source of Energy
Green Power and Other Renewable Source of Energy
SOURCE OF ENERGY
Green Power
Solar Energy
One of the reasons for this is that the total energy we receive
each year from the sun is around 35,000 times the total energy
used by man. However, about 1/3 of this energy is either
absorbed by the outer atmosphere or reflected back into space
Solar Technologies
Wind Power
Offshore wind farms have a higher yield of
wind speeds, thus contribute higher supply
of electricity.
Onshore wind farms are good alternative
to provide electricity to isolated locations.
Matching Characteristics of
Wind
Variable Speed of Wind and frequent
changes in the
direction.
Matching these characteristics by
following ways :
a) Use of Inverter for Variable Speed of
Generator
b) Use of Continuous Pitch Operation of
Blades
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GOALS
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Geothermal Energy
Geo Thermal
Working
Advantages
--- Disadvantages
Reliability
Renewability
Combustion-Free
Reduction in global
warming
Potential
24 countries --- 10.7 GW
TIDAL ENERGY
Tidal energy is one of the best renewable energy in the world. Tidal
energy power
systems are expected to be very competitive with other conventional
energy sources,
and excellent cost advantages arise from there being no pollution or
environmental
expenses.
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ADVANTAGES
As the new tidal current models do not require the construction of a dam, they are
considered
much less costly.
-
- As the new tidal current models do not require the construction of a dam, they are
considered
much more environmental-friendly.
- As the new tidal current models do not require the construction of a dams, further cos
reductions
are realized from not having to dredge a catchment area.
- tidal current generators are also considered more efficient because they can produce
electricity
while tides are ebbing (going out) and surging (coming in), whereas barrage-style
structures
only generate electricity while the tide is ebbing.
- Vertical-axis tidal generators may be stacked and joined together in series to span a
passage
of water such as a fiord and offer a transportation corridor (bridge), essentially
providing
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two infrastructure services for the price of one.
FUEL CELL
Afuel cellis a device that converts the
chemical energy from a fuel into electricity
through a chemical reaction with oxygen
or another oxidizing agent
Hydrogenis the most common fuel
Fuel cells are different frombatteriesin that they require a constant source
of fuel and oxygen to run, but they can produce electricity continually for as
long as these inputs are supplied.
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