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Energy management

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Energy management

  1. 1.  Energy is an essential need for human existence. There is shortage of energy due to fast depletion of fossil fuels and the increase in demand for energy due to the increase in population and the growth of industry.  The energy demands are increasing while conventional energy sources are diminishing at a much faster rate
  2. 2.  Coal, oil and gas are called “fossil fuels” because they have been formed from the organic remains of prehistoric plants and animals
  3. 3.  Coal is crushed to fine dust and burnt  Oil and gas can be burnt directly
  4. 4. coal provides around 28% of our energy and oil provides 40% Burning coal produces sulphur dioxide an acidic gas that contributes to the formation of acid rain
  5. 5.  Crude oil( called petroleum ) is easier to get out of the ground than coal, as it can flow along pipes . This also makes it cheaper to transport.
  6. 6.  Natural gas provides around 20% of the world’s consumption of energy and as well as being burnt in power stations, is used by many people to heat their homes.
  7. 7.  Very large amounts of electricity can generated in one place using coal, fairly cheaply.  Transporting oil and gas to the power station is easy  Gas –fired power stations are very efficient  A fossil fuelled power station can be built almost anywhere. So long as you can get large quantities of fuel to it
  8. 8.  The main disadvantage of using fossil fuels to produce energy are the high levels of pollution released when they are burned.  This pollution mainly carbon dioxide, methane and sulphur dioxide, is a major cause of global warning.  Sulphur dioxide is also know to cause acid rain , which is particularly harmful to the environment
  9. 9.  .