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CBSE Class 10 Answered

give me at least 3-4 advantages and disadvantages of tidal energy, wave energy and ocean thermal energy......
Asked by Rajeev | 09 Sep, 2014, 09:51: PM
answered-by-expert Expert Answer

 Advantages of tidal energy:

  1. Tidal energy is renewable energy source.
  2. The energy produced is clean and non-polluting. It does not produce any green house gases or other harmful products.
  3. It does not require any fuel.
  4. Electricity is produced reliably.

Disadvantages of tidal energy:

  1. There are very few places around the world where tidal dams or tidal barrages can be built.
  2. Building a barrage across is very expensive and affects a very wide area around.
  3. It also affects the aquatic life adversely and can disrupt migration of fishes.
  4. The rise and fall of sea water during the tides is not sufficient to generate electricity on a large scale.


Advantages of wave energy:

  1. Wave energy is renewable energy source and is free of cost.
  2. It does not produce any waste products.
  3. It reduces our reliance on non-renewable resources.

Disadvantages of wave energy:

  1. The ideas are only experimental in nature. The models made based on these ideas will take many years to harness the sea wave energy on a large scale.
  2. It is suitable at locations only where strong waves occur.
  3. The equipment should be strong to stand against rough weather.
     

Advantages of ocean thermal energy:

  1. Ocean thermal energy is renewable source of energy.
  2. It can be used continuously for 24 hours a day throughout the year with little ongoing cost.
  3. It generates electricity without emission of green house gases.

Disadvantages of ocean thermal energy:

  1. The cost of installation of the device and maintenance of the power plant is high.
  2. It causes disruptions in the aquatic ecosystem.
  3. A constant supply of warm and cold water is required. So, the plant can be built in only suitable for tropical locations.
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