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Energy resource


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Energy resource

  1. 1. By Tejpal Choudhary & Ghanshyam Singh
  2. 2. Introduction Energy is the physical quantity which can use as mechanical work, as heat and many other works. Energy and the environment pose major scientific and technological challenges in new century (21th century).
  3. 3. Types of energy resources Renewable energy resources Non-renewable energy resources
  4. 4.  Renewable energy resource:- its means we can use the resources again and again. Examples- hydropower, wind, solar and biomass.  Non renewable energy resource:- these energy resources are available in limited quantity and we can not use then again and again. Example- coal, oil and natural gas, thermal power and nuclear energy.
  5. 5. commercial energy use by different sources for the world in 2003 hydroppower, geothermal,s olar,wind 7% biomass 11% nuclear power 6% natural gas 21% oil 33% coal 22%
  6. 6. Renewable Resources  Hydro power:-Water energy is the most used conventional renewable source of energy. Energy is obtained from water flow, water falling from a height. Hilly and high land areas are suitable for this propose .  Wind energy:- wind power harnesses the energy of the wind to propel the blondes of the wind to propel the blades of wind turbines. These turbines cause the rotation of magnets, which create electricity.
  7. 7.  Solar energy:- solar energy is renewable resource of energy, but it is very expensive to produce. we convert sun light into electricity by using solar cells.  Bio-energy (Biomass):-bio-mass is all plant material or vegetation cultivated.
  8. 8. Non-Renewable energy resource  Coal:- Coal, besides a prime source of industrial energy is also a raw material.  Oil and Natural gas :- sedimentary rocks containing plant and animal remains about 10-20 hundred year old are the source of oil and natural gas.  Thermal power :- thermal power plants use coal, petroleum and natural gas to produce thermal electricity.  Nuclear energy:- nuclear power stations are use nuclear fission to generate energy from the reaction of Uranium 235.
  9. 9. How can we save energy?  Use a solar cooker, say , for rice and dal. It saves gas.  Build houses following the principles of ecological     architecture. Car pooling . Minimize the use of automobiles for local work like shopping. Live near your place of study or work, if possible. Use public transport whenever possible.
  10. 10. Conclusion Almost all source of energy have their limits and problems. We must use the most sustainable high efficiency. Substitute non-renewable energy by renewable energy. Use of a non-renewable resources creates environment inputs when mining.
  11. 11. bibliography  Introduction environment science ,BS publications ,edition2010 ,5th reprint , Y Anjaneyulu , Energy resources , p-136-207  Ecology and Environment ,11th edition , Rastogi publication , P. D. Sharma , Energy Crisis and nonConventional sources , p-551-584.  Environment studies from crisis to cure, second edition ,Oxford university press, R. Rajagopalan , Energy resources , p-119-131.