Tide is a periodic rise and fall of water level of the sea caused by the forces of attraction of the sun and the moon.The rotation of earth causes two high tides and two low tides to occur daily.However, the effect of revolution of the moon around earth increases the intervals between two high tides from 12 hours to 12 hours 25 minutes.The difference between high and low water levels is called the range of the tide.
Tides of higher ranges are known as spring tides.They occur on full moon and new moon days,when the force of the sun and moon on earth add together.When the gravitational forces due to sun and moon on earth oppose each other,tides of minimum range are obtained.such tides are known as Neap Tides Neap tides occur at the first and third quarter of the moon.
In the open sea the range of the tide is about 1 m.At some location on the coasts,the tidal range is 20 m or even more. The tides can be used to generate electrical energy which is known as tidal energy.However,tidal energy can only be utilized economically for power generation where the tidal range is more than 5 m.
In a tidal project, a structure is constructed at the mouth of the creek or gulf where tidal ranges are more than 5 m. The reservoir formed by its construction is known as Basin.It is filled during high tides and emptied during low tides. The potential energy of water on the two sides of the structure is used to drive a turbine,which is turn drives a generator to generate electrical energy.
Tides of higher ranges are known as spring tides.They occur on full moon and new moon days,when the force of the sun and moon on earth add together.When the gravitational forces due to sun and moon on earth oppose each other,tides of minimum range are obtained.such tides are known as Neap Tides Neap tides occur at the first and third quarter of the moon.
In the open sea the range of the tide is about 1 m.At some location on the coasts,the tidal range is 20 m or even more. The tides can be used to generate electrical energy which is known as tidal energy.However,tidal energy can only be utilized economically for power generation where the tidal range is more than 5 m.
In a tidal project, a structure is constructed at the mouth of the creek or gulf where tidal ranges are more than 5 m. The reservoir formed by its construction is known as Basin.It is filled during high tides and emptied during low tides. The potential energy of water on the two sides of the structure is used to drive a turbine,which is turn drives a generator to generate electrical energy.
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