Water is over 800 times denser than air. In similar dimensions,
12 MPH water flows are comparable to 110MPH winds.
Most large scale wind turbines operate in between 9 and 55 MPH winds. Therefore, in theory, 6 MPH water flows should be sufficient for marine turbines.
Unfortunately, these flow velocities are out of range for today's technologies.
Due to it's density, gravity controls the flow of water and in large volumes, horizontal water flows contain massive amounts of energy, Today's technologies increase flow velocity to scale which requires elevation change. The need to scale vertically to build velocity dramatically limits potential sites for energy extraction. Very low flow velocities contain massive amounts of energy given you can capture enough volume. This enables the new hydrodynamic possibility of horizontal scaling which can be unlimited!
Para-anchors are heavy duty, marine grade parachutes capable of maximum traction when in water. Mariners around the world use them for sport, vessel control, and emergency situations. They are commonly used to slow, stabilize and steer vessels from sailboats to large ships, however, deploying a Para-anchor into a passing flow can create immense potential energy for conversion into kinetic energy.
Don Wilden, president of Para-Tech Sea Anchor reports that a 9-foot sea anchor is capable of generating approximately 2000 lbs. of drag when towed at just 2.3 mph!
Fiorentino Para-Anchor, leading manufacturer of Para-anchors in the US reports similar tow test data. Lead engineer Zack Smith, deigns heavy duty applications for NASA, SpaceX and the Coast Guard. He has also documented of the energy Para-anchors can harness and provides probono support for our project!
Our 44 inch prototype collector generates 47 lbs. of pull force from water flows of approximately 1.018 f/s.
Our paper published by Dr. Valsecchi in the American Institute of Aeronautics and Astronautics shows how kilowatts of power are possible from low speed water flows using Para-anchor technology.
Our technology can convert low speed flows into high torque rotation! Horsepower! We are now working with Zack Smith, to fine tune our prototype water pistons.
To see more sea anchor drag test data please visit http://para-anchor.com/reports/report152.pdf