Patent ID: 8836153

Claim:
A wave-power aggregate for extracting energy from wave motion at a surface of a first fluid, said aggregate comprising: at least one flexible elongated container essentially assuming a wave shape of said surface in such a way that portions of said container are moved up and down by waves at the surface of said first fluid, the container being equipped with an inflow and an outflow wherein said container has an extension in an extension direction between said inflow and said outflow; a fluid supply means arranged to alternately supply said first fluid and a second fluid to said container, the first fluid and the second fluid being transported through said container from the inflow to the outflow by the wave motion at the surface of the first fluid; and conversion means which are connected to said outflow and/or inflow and arranged to convert an increase of pressure and/or flow rate in at least one of said first and second fluids into usable energy, wherein said conversion means comprise a turbine and a generator driven by the turbine, said generator being configured to at least initially operate as an engine and the turbine as a pump to increase a flow speed of at least one of said first and second fluids; and wherein said wave-power aggregate further comprises a pipe for the second fluid, wherein the pipe connects the inflow and the outflow; and said aggregate further comprises a fluid separator arranged to separate at least said first and second fluids.