Dette ser egentlig litt lovende ut. Med forbehold om at jeg ikke kan noe om hav og strøm og sånt, selvfølgelig.
|
Fallende vann kan skape strøm. Snart kan vi kanskje også bruke roligere elver. Bilde av jamtea. CC:BY |
Ocean currents can power the world, say scientists – Telegraph
|
The new device, which has been inspired by the way fish swim, consists of a system of cylinders positioned horizontal to the water flow and attached to springs.
As water flows past, the cylinder creates vortices, which push and pull the cylinder up and down. The mechanical energy in the vibrations is then converted into electricity.
…
Michael Bernitsas, a professor of naval architecture at the university, said … “If we could harness 0.1 per cent of the energy in the ocean, we could support the energy needs of 15 billion people. In the English Channel, for example, there is a very strong current, so you produce a lot of power.”
