This document contains following content:
Tidal energy introduction, EBB AND FLOOD TIDES, Slack water, Classification of tidal power plant and its working, small case study on tidal power plant.
Tidal energy is somewhat similar to hydro energy. Hydro energy:
converts the potential energy of the water to mechanical work by
water turbine.
The tides are one of many sources of energy from the oceans. this
energy can be trapped from coastal waters by building dams that
entrap the water at high tide and releases it at low tide back to the sea.
Power can then be obtained by turbines from both in – out flows of the
water. The amount of energy available is very large but only in a few
parts of the world.
The Tides are rhythmic but not constant, nor do they occur in a regular
daily schedule. Their Occurrence is due to the balance of Forces,
mainly the gravitational force of the Moon but also that of the sun,
both acting together with that of the earth to balance the centrifugal
force on the water due to the Earth rotation. The result is the rhythmic
Rise and fall of water. The Tides are characterized by their schedule and
range R.
, The tidal schedules vary from day to day because orbit of the Moon
does not occur on a regular 24 hour daily schedule. Instead the Moon
rotates around the earth every 24 hours 50 minutes. During this time
the tide Rises and Falls twice, resulting in a tidal cycle that lasts 12
hours 25 minutes.
Tidal range R is defined as
R=water elevation at high tide – water elevation at low tide
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