Limitations of conventional sources of Energy

1. Limitations of conventional
sources of Energy
and Various renewable energy
sources

2. Energy
• Energy broadly means the capacity of something (a
person, an animal or a physical system) to do work
and produce change.
• Power- rate of flow of energy or rate at which work is
done

3. Why do we need energy?
• Transportation
• Heating homes
• Cooking
• Power machinery used for agriculture, industry/business, homes

4. Types of energy
• Conventional
• Non conventional

5. Energy Sources
• • Primary Energy sources-
– Fossil fuels (oil, natural gas, coal)
– Nuclear energy
– Falling water, geothermal, solar
• • Secondary Energy sources- – Sources derived from a primary source
like…
❑Electricity
❑Gasoline
❑Alcohol fuels (gasohol)

6. Conventional energy
• Energy that has been used from ancient times is known as
conventional energy.
• Coal, natural
• gas, oil, and firewood
• are examples of
• conventional energy
• sources.

7. Conventional energy
• Traditional energy sources consist primarily of coal, natural gas and
oil.
• They form from decaying plant and animal material over hundreds of
thousands to millions of years.
• Carbon based (hydrocarbon)
• Most of these sources are burned to produce energy through power
plants and automobiles.

8. OPEC- Organization of Petroleum Exporting
Countries
• Includes: Algeria, Ecuador, Gabon, Indonesia, Iran,
Iraq, Kuwait, Libya, Nigeria, Qatar, Saudi Arabia,
United Arab Emirates, & Venezuela
• 13 countries that hold about 67% world oil reserves

9. Effects of conventional sources
• Green house gas
• Pollution
• Carbon di oxide release
• Sulphur di oxide release
• Heavy metal release (mercury, lead)
• Depletion of resources

10. Coal
• Coal exists in many forms therefore a chemical formula cannot be
written for it.
• After plants died they underwent chemical decay to form a product
known as peat
• Peat is converted to coal by geological events and great pressures and
temperatures.
• When coal is burned, sulfur is released primarily as sulfur dioxide
(SO2 – serious pollutant)
• Coal Cleaning - Methods of removing sulfur from coal include
cleaning, solvent refining, gasification, and liquefaction

11. Alternate sources
• Wind energy
• Solar energy

12. N type and P type semi conductor