Prime-mover dynamo plants – Tide and wave motors
Patent
1983-01-07
1985-01-22
Dobeck, B.
Prime-mover dynamo plants
Tide and wave motors
290 54, 290 55, 417332, 60499, 60506, F03B 1312, F04B 1702
Patent
active
044954247
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a combined wind- and wave-utilization plant, which combines the utilization of both the energy of the wind, as well as the energy of the waves of the sea, or of large lakes.
BACKGROUND OF THE INVENTION
The combined wind- and wave-utilization plant includes fluid flow machines for utilization of both flow energies, which in general, must always be disposed in the direction of the wind. It is therefore advisable to install the fluid flow engines jointly on a floating carrier, which, being rotatably anchored, is automatically set into the wind.
Based on the state of the art, until today, cost-effective large plants for utilization of the wind- or wave-energy have not yet become known. Causes for the absence of any cost-effective large plants for the utilization of wind- and wave-energy are the fluctuating forces of the wind. Even on the windy north sea coast a large plant can provide full output only during about ninety days of the year. The plant is non-operating for the same time, as the minimal wind strength 6 for operating the plant is absent. As the generator output increases with an increasing number of revolutions, slow rotors, like windmills and American wind wheels, are no longer cost-effective for generation of larger currents. Rapidly rotating propellers, however, require larger wind strengths.
But several experiments have hitherto been undertaken, also for the utilization of waves, where particularly floats suspended from a pendulum suspension have been utilized.
SUMMARY OF THE INVENTION
It is an object of the present invention to create a combined wind- and wave-utilization plant, in which both aforesaid energy types can be utilized in an optimal manner, and be transformed into electrical energy.
The combined wind- and wave-utilization plant consists, according to the invention, by the fluid flow engines for utilization of both flow energies being equipped with novel blades, and being provided with floats as well as a low-loss transmission by means of pumps, pressure conduits, and pressure vessels, which operate common turbo-generators, installed on floating carriers.
In the plant, according to the invention, slow rotors can therefore be utilized as wind wheels, which operate already at a wind strength of one, without there being utilized any uneconomically large conversions of a different type for the generation of current. Furthermore, there act on the same pumps, with their pressure conduits and pressure vessels, which operate common turbo-generators, novel floats with shovels, and wherein the pumps and water conduits transmit the force of the waves up to the engine locations through pressure vessels to turbo-generators in the interior of the ship, so that in an external region of the plant, according to the invention, no sensitive machines or electrical conduits are required. The external water conduits and pumps are water insensitive, and can withstand any flooding. Here all waves between 0.5 and 10 meters can be fully utilized. During smaller waves, the double-acting piston pumps act like blade pumps, whose balance lever is set in to-and-fro-motion for only a short time. During large waves, the piston operates during its full cylinder length, possibly with several strokes per wave.
The following additional advantages result by the wind wheels acting on the pumps. generator. other systems, but is fully utilized. constant frequency in the case of any wind fluctuations, as the pressure vessel provides this free of cost. largest and most efficient turbogenerators, which cannot be stationed on any propeller tower. those of 300 km/hr, and have the same output at the same operating surface and the same wind strength, namely, one wheel of 10 m diameter has an output at a wind strength 5=2.38 kW, and four wheels of a diameter of 5 m have an output of 4.times.0.59 kW=2.36 kW. But as the small rotor, contrary to the rapid rotor, provides an output even at the lowest wind strengths, it is, as an average, much more productive per year. as large as t
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Dobeck B.
Wade Shelley
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