An inconspicuous device can generate electricity from waves / Energy Bulge Wave / Free Resource
It is actually a marine platform that swings on the waves at first glance. In fact, it has already gone through a year of testing and has achieved great results. So, is generating cheap electricity from the sea really within reach?
We recently wrote about how Japan lowered turbines to the sea floor to generate electricity using powerful ocean currents. And now here’s a project that has already completed a year of experimentation that proves that harnessing the power of the sea is possible.
The UniWave platform works on a slightly different principle from the Japanese turbine. It is designed so that the waves push the water into a special concrete room. There, the air is compressed and pushed out again through the outlet valve. As soon as the water in the room recedes due to the natural flow of waves, a powerful vacuum is created that sucks air through the turbines and generates electricity, which feeds the network via a cable.
In essence, it is very simple, similar to the Japanese device, which uses ocean currents to generate electricity instead of waves, and therefore it is not located on the surface, but quite the contrary above the sea floor.
In addition, the UniWave platform contains one major innovation. It was designed to be unidirectional unlike many similar experimental devices. It does not require a turbine or two-way blades that have the ability to change its pitch. Therefore, it is also a much cheaper platform, and since most of the main equipment of the platform is located above the surface, this equipment also has a much longer life, as it is not damaged by salt water as much. The platform can be placed practically anywhere. It is enough to use places on the coast where the sea is not calm and there are sufficiently large waves.
The test stand was built as a 200-kilowatt facility, which the company deployed for twelve months off King Island in Tasmania. During the year, the company added several technological improvements to the platform, and thus the test exceeded all expectations. In the end, the test platform delivered clean, cheap energy directly to the island’s infrastructure for a number of months.
It is likely that the tested platform will remain in place until the end of this year, and the company is already preparing for its steep production. Commercial production would mean that these floating generators of electricity from sea waves could be brought relatively quickly to nations with sea conditions suitable for their location and use. Connecting the platform directly to the grid is not a problem at all, and such platforms can easily generate power, for example, for entire coastal cities. It is definitely worth it.
Japan has only been testing its turbines to produce electricity from ocean currents since June of this year, when it launched its devices just above the bottom, where it will use one of the world’s fastest ocean currents, the Kuroshio.
The Japanese have the same plans for their turbines as Wave Swell Energy. They also like to place such turbines on their coasts and connect them directly to their infrastructure. But it is a twin-turbine device, so it is more expensive to manufacture than the UniWave platform. The power of the test turbine is also halved, that is, 100 kilowatts. However, the Japanese expect that in the future, when they turn on more of these devices, they will be able to produce up to 200 gigawatts of electricity for their country, which is about 60 percent of the electricity that Japan now produces in other ways. .
So, as it turns out, there is a great future in similar technologies that can somehow harness the power of the sea. Thus nations with usable seas can produce enough electricity not only for themselves, but also to distribute it to the land-based nations.
Author’s article, another source: puffed wave energy
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