What are the limitations of extracting energy from the wind , waves and tide
Answers
Answer:
a) 1. Wind energy is harnessed by windmills in areas where wind blows for most of the time in the year.
2. There are very few sites where wind blows all the time throughout the year.
3. At the same time the speed of the wind should be more than 15 km/hr in order to run a windmill, which is difficult to achieve at most locations.
4. There needs to be a backup for the energy when wind is not blowing.
5. Also, building windmills requires a large area and many windmills need to be built many in number at one site so as to get a suitable output.
b) 1. Wave energy can be used to harness only when it is due to very strong waves. Mostly, the strength of the waves are not as strong as required for this purpose.
2. Also, the devices required to trap wave energy are very costly.
c) 1. Tidal energy also can be harnessed when the tides are very strong. Otherwise tidal energy cannot be extracted.
2. There are very few coasts where such strong tides happen.
3. At the same time, tides are not a common and regular phenomenon because they deoend on the positons of the Moon and the Earth.
Hello Dost ☺
Answer :
a) The wind: Wind energy is trapped using windmills. One of the limitations of the wind energy is that the windmills requires a speed more than 15 km/h to generate electricity. And the number of windmills will be more to cover a huge area.
b) Waves: In order to extract energy from the waves, very strong ocean waves are needed.
c) Tides: In order to extract energy from the tides, the sun, the moon and the earth should be in a straight alignment and the tides should be very strong.
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