The Multi-Energy Device is able to convert the kinetic energy of multiple sources into useful energy e.g. electricity. The energy sources include ocean waves, ocean currents, tidal currents, rivers and streams.

The basic working principle of the device comprises utilising pressure differences to create a water flow that drives a water turbine which in turn can drive other equipment such as an electrical generator. The water turbine can be integrated in the device or can be situated on an adjacent floater or onshore using a flexible pipe between the device and water turbine.

When the water turbine is integrated in the device pressure difference is obtained by creating high pressure at one part of the device and low pressure at another part of the device, resulting in a water flow from the high pressure side to the low pressure side; the water turbine is situated between the high pressure side and low pressure side.

Low water pressure in the device occurs due to drag and inertia forces and the increase of velocity of the water flowing past the device; the degree of reduction of water pressure is related to the amount of kinetic energy of the water mass acting on the device.

When the water turbine is situated onshore, water flow through the water turbine is obtained by the difference in pressure between the device (low pressure) and the pressure at the inlet of the water turbine (atmospheric pressure or higher).

The image above shows a concept where the water turbine can be integrated in the device or can be situated on an adjacent floater or onshore.
The image below shows a concept were the water turbine is integrated in the device.

 
Illustration of the MultiEnergy Device with intergrated waterturbine