Deals with basic points regarding different types of energy resources present around us.Conducted by the students of 1st year Bsc.Computer Applications[Triple Main] as a part of Environmental Studies course.

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3. Growing energy needs-most of the
industrial processes like mining,
Transport,lighting,heating and
cooling in buildings need energy.

5. Renewable energy
• Generated continuously and inexhaustible .
• available in plenty.
• ex:wood ,solar energy, wind energy etc.
• green & environmental friendly.
Non-renewable energy
• cannot be regenerated.
• not environmental friendly.
• ex:coal,petroleum,natural gas,nuclear fuels.

6. Wind Energy
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7. •Advantages:
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•Disadvantages:
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11. • Advantages:
• It is renewable resource and will not deplete
• solar power generation releases no by-products
• It is free of cost and can be efficiently used for heating and lighting
• solar power generation is quiet, absolutely clean and pollution free
• Reduces electricity bills
• Disadvantages:
• Solar power stations are very expensive to built
• Solar power does not produce energy when sun is not shining
• Night time and cloudy days limit the amount of energy produced
• Uses a lot of space
• Weather dependent

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• It does not produce any harmful byproducts.
• Geothermal plant is self sufficient(energy-wise).
• They are small and has little effect on landscape.
• Cost is less.
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• If constructed incorrectly ,it produces pollutants.
• Improper drilling into the earth can release hazardous minerals and gases.
• It is suitably only to particular region and cannot be harnessed everywhere.
• The areas where this energy is harnessed are prone to earthquakesand
volcanoes.
• Setting up of geothermal power stations requires huge installation cost.

16. HYDROELECTRIC ENERGY

17. •Hydropower is the largest producer of alternative energy in
the world.
•The kinetic energy of moving water is converted to
mechanical energy and given to the turbines.
•The moving turbines converts mechanical energy to
electricity through generators.

19. •Hydropower is renewable ,constant and
predictable.
•Produces no waste or pollution since there
is no chemical reaction to produce power.
•Electricity can be generated constantly ,
because there are no outside forces.
•Water used for hydropower can be reused.

20. •Dams are very expensive to build.
•They cause adverse effect on aquatic
life.

22. HYDROGEN ENERGY
•Hydrogen is a clean fuel and an energy carrier
that can be used for a broad range of applications
as a possible substitute to liquid and fossil fuels.
It has tremendous potential and can be used to
power homes,vehicles,and space rockets.NASA
has used liquid hydrogen in space shuttles since
1970’s.A fuel cell combines hydrogen and oxygen
to produce electricity ,heat,and water.Fuel cells
are often compared to batteries.Both convert the
energy produced by a chemical reaction in to
usable electric power.

23. ADVANTAGES
•It is a renewable and clean energy source.
•It is non toxic.
•It is more efficient than other forms of energy.
•Used for powering space ships.

24. DISADVANTAGES
•Production of hydrogen is expensive.
•Difficulty in handling ,storing and transportation.
•Its low availability in pure form.
•Requirement of energy for the production of
Hydrogen.

26. Presented by :
•Sr.Remya
•Remya
•Rizwana Rahim
•Shahina Shajahan
•Sharanya S Pillai