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Wave Swell Energy develops electricity from waves using artificial blowhole

Tinuku ~ Wave Swell Energy Ltd (WSE) develops energy from waves using artificial columns. The Australian public startup is developing technology to convert energy in ocean waves into clean and emission-free electricity to be transmitted to shore and connected to electrical grid systems.

Tinuku Wave Swell Energy develops electricity from waves using artificial blowhole

Wave Swell Energy Ltd is currently developing a 1 MW wave energy project installed on the west coast off King Island is a waterway between Tasmania island and the Australian mainland. A demonstration of new technology on a large scale to generate electrical energy at cost comparable to coal power plant.

WSE collaborated with Hydro Tasmania, the King Island Council and the community to ensure the project was developed beneficial to all stakeholders. Tom Denniss first proposed technology in the late 1990s and oversaw the first marine-based prototype R&D program.

"It's basically an artificial blowhole, so it's like an open cave under water, some valves and turbines in the air. The waves passing above the structure will flow into the cave and climb up into it," Denniss said.

Tinuku.com Wave Swell Energy develops electricity from waves using artificial blowhole

"The air is over through a series of valves and when the waves begin to recede, the valves are closed, this creates a partial vacuum inside the room and the turbine generates electricity," Denniss said.

A concrete-shaped device for channeling incoming and outgoing waves from the center. Structure measuring 20 meters and 18 meters high, technology is based on the concept of the oscillating water column (OWC) effectively an artificial blowhole.

www.Tinuku.com Wave Swell Energy develops electricity from waves using artificial blowhole

A large hollow concrete space, partially submerged and seated on the seafloor, and dumped into the sea through an underwater hole. Space includes a small hole into the atmosphere above the water line where there is an air turbine.

As the crests of the waves and troughs pass through the OWC, water enters and leaves the chamber through a submerged hole. Water rises and falls inside the chamber causing the trapped air pressure to oscillate. Pressure fluctuations force air through the turbine at the top of the room to generate electricity as it does in turbines.

WSE turbines are only exposed to air flow from one direction and turbine design is simpler, more powerful and has higher energy conversion efficiency. The moving parts are just turbines and some simple valves, all above the waterline.

Tinuku Wave Swell Energy develops electricity from waves using artificial blowhole

No moving parts are submerged, maintenance is only required in areas that are easily accessible or above water level. The OWC standard produces a peak power output of 1 MW. While the output of each moment is stable, constant and the variation is longer.

Peak output of 1 MW with an average of about 470 kW or capacity of about 47 percent, compared with 30 percent by wind energy systems and other waves. The efficiency level is capable of generating electricity at a cost of US$0.07 per kWh or equivalent to coal.
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