SKWID – a device that uses the power of wind and water

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Japanese scientists have developed a device that can receive energy due to the force of wind and tides. This equipment is called SKWID. There are devices that can receive energy from the wind or from the flow of ocean currents. However, according to the Japanese design firm MODEC, the SKWID system, which will soon be tested, can interact with water and wind simultaneously, which will be the first time.

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The name SKWID comes from the keel of the Savonius and the Darrieus wind turbine. These two elements are involved in receiving the current. The equipment is located on a floating platform, where the Savonius tidal turbine is located just below sea level, and the 2 vertical axes of the Darrieus wind turbine are in the air. Two elements are interconnected through the central box of the generator, which allows SKWID to work simultaneously with two elements. At the same time, they help each other gain additional inertia.

The design of the wind turbine assumes rotation both to the left and to the right, therefore Darrieus works irrespective of the direction of the wind. The tidal turbine works only in one direction, but this does not depend on the direction of the current. The Savonius turbine can operate at the weakest currents, and its operation will not deteriorate when fouled by marine organisms. Since the turbine does not rotate faster than current, it cannot harm the inhabitants of the seas and oceans.

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SKWID is protected from overturning, because the generator and tidal turbines are designed to maintain the center of gravity of the equipment. The annular panel is connected to the central structure by means of flexible rubber devices that allow the apparatus to sway through the waves, while the turbines and associated mechanisms remain stable in an upright position.

As NHK News was reported to Japan, one of the SKWIDs will be tested off the coast of Japan this fall. The developers say that wind turbines should be located at 47 meters at sea level, and tidal turbines will have a diameter of 15 meters. Working together, they will be able to generate energy to provide about 300 households.

. (tagsToTranslate) air energy (t) tidal energy (t) current (t) Science

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