Methodology of Amplification

The engagements of these two devices leads to amplifying the ocean waves such that, as the buoyancy tank is uplifted with the crest of the wave at primary wave region, same time in the secondary wave region, power takeoff chamber is also at the same crest level. But the secondary wave region is at the trough of the wave, and this leads to push the water out from the power takeoff chamber opening.

Similarly when the buoyancy tank is facing trough of the wave and at the same time in the secondary wave region, power takeoff chamber is positioned downwards. As the power takeoff chamber is at the trough position but facing a crest of the wave, water gets pulled in to the power takeoff chamber, from its opening.

Therefore, if in one cyclic movement where the buoyancy tank buoyant for one units of water level distance, the power takeoff chamber faces two units of water level distance, hence building two units of oscillating water column in it. This shows the whole apparatus amplifies the incident wave level and this is known a method of wave surface level amplification.

Concept behind power takeoff system

Our offshore OWC extracts energy from heave (vertical) motion of the wave. As the buoyancy device gets lift by the crest of incident wave, it gets energized and stores potential energy in it at the peak of crest.

Further as the incident wave start to its trough the buoyancy device start to release its potential energy and rapidly falls down and reach to its lower buoyant level, hence generating maximum height of water column in power takeoff chamber through its opening and start the oscillation with the wave motion.

Once the oscillation system gains in resonance with the incoming incident wave motion, the power extraction by power takeoff system reaches to its peak performance.