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US 11,686,284 B2Granted
Underwater energy storage system
AssigneeHans Gude Gudesen
InventorsHans Gude Gudesen, Per-Erik Nordal
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Abstract
An underwater energy storage system comprising a container where energy is stored by transporting water between the container and a body of water, is disclosed. 5 The container comprises a water- and gas-tight membrane surrounding a container volume, where the container is rendered mainly incompressible by a fill material comprising densely packed, incompressible objects arranged in the container volume, the fill material forming a mainly incompressible aggregate.
Claims21
An underwater energy storage system comprising:
- a container configured to be arranged in a body of water with a water surface, the container having a container volume comprising a void container volume configured to be filled with gas and water to varying degrees at an internal pressure lower than an external pressure of the body of water surrounding the container,
- a pumping arrangement for pumping water from the void container volume into the body of water for storing energy, and a device for allowing water from the body of water flowing via a turbine into the void container volume for generating energy,
- wherein:
- the container comprises a water- and gas-tight membrane defining the container volume, and
- incompressible objects are densely packed throughout the container volume limiting deformation of the membrane by the external pressure, and
- the void container volume is formed by a communicating void interstitial volume between the incompressible objects.
3 more elements
An underwater energy storage system comprising:
- a plurality of containers configured to be arranged in a body of water with a water surface, the containers having a container volume comprising a void container volume configured to be filled with gas and water to varying degrees at an internal pressure lower than an external pressure of the body of water surrounding the containers,
- a pumping arrangement for pumping water from the void container volume into the body of water for storing energy, and a device for allowing water from the body of water flowing via a turbine into the void container volume for generating energy, wherein:
- the containers comprise a water- and gas-tight membrane defining the container volume,
- incompressible objects are densely packed throughout the container volume limiting deformation of the membrane by the external pressure,
- the void container volume is formed by a communicating void interstitial volume between the incompressible objects,
- the containers comprise an outtake in a lower part, and the pumping arrangement comprises a pump arranged for pumping water out of the void container volume via the outtake, for storing energy, and
- wherein the containers are serviced by at least one of the same pump and turbine via a network of tubes.
4 more elements
Dependencies are inferred from the claim text.