KESC Bowsprit Generator

Patent Application Filed: August 2004

Patent Application Owner: Darwin A. Salls

The Bowsprit Generator design is based on free flow hydrodynamics, which is used in constructing bowsprits on ships. The design will increase the efficiency of the current-driven turbine by 3 to 12%. Because of the low or null drag coefficient, these generators can be attached to the hulls of large ocean-going ships or in conjunction with the new electric drive pods now being used to drive and steer new cruise ships, to offset internal electrical generating costs. The generators can be placed on pedestals fixed to the bottoms of rivers, channels, or ocean, or attached to docks, bridges, ship hulls, pilings or tethered by anchor where depth is a problem or anywhere omni directional current flows.

Product Performance

Performance of the Bowsprit Generator is completely predictable since the resources has four times the energy density of a good wind site (water has 835 times the density of the air) so the water turbine diameter can be considerably less than that of a wind turbine and still generate the same energy. This generator will be upwards of 65% efficiency in a stationary location. If the generator were attached, as an assistant generator or to a moving vessel, the capacity would be dependent on the movement of the vessel. The power that is able to be extracted is dependent on the velocity of the water flow and the area and efficiency of the water turbine.

A stationary 600 kW Bowsprit Generator with a 10 meter turbine diameter, 2 m/s (4 knots) current, at 45% efficiency will generate 2,332,800 kWh per year.

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