Alternative Sourse of Energy - 3

1. WAVE ENERGY CONVERSION
SYSTEM
Wave energy devices that
convert the kinetic and
potential energy
associated with a moving
ocean wave into useful
mechanical or electrical
energy.
UNIT-III
Chapter-3
B.TECH MECHANICAL ENGINEERING, 7th Semester, GMRIT

3. WAVE ENERGY PRINCIPLE

8. Attenuator wave energy converter
• An attenuator is a floating device which
operates parallel to the wave
direction and effectively rides the waves.
• These devices capture energy from the
relative motion of the two arms as the
wave passes them.

10. Oscillating water columns (OWCs)
• Oscillating water columns (OWCs) are a type of wave energy converter
(WEC) that converts energy from the oscillation of the seawater inside a chamber or
hollow caused by the action of waves.
• Oscillating water column devices use wave action to pressurize air in a chamber,
forcing it through an air turbine.

13. ABSORBER BUOY WORK
• A point absorber is a floating
structure which absorbs energy
from all directions through its
movements at/near the water
surface.
• It converts the motion of the
buoyant top relative to the base
into electrical power.

14. OVERTOPPING DEVICES
• Overtopping devices capture water
as waves break into a storage
reservoir.
• The water is then returned to the sea
passing through a conventional low-
head turbine which generates power.
• An overtopping device may use
'collectors' to concentrate the wave
energy.

16. Oscillating Wave Surge Converter (OWSC)
• The Oscillating Wave Surge Converter (OWSC) is a novel shoreline or near-
shore wave energy converter.
• The OWSC is designed to couple strongly with the horizontal particle
motion, permitting large amplitudes of motion of the working surface whilst
minimizing energy losses in associated water particle motions.