Bobber swims into action

Researchers at the University of Manchester are developing a new wave energy device known as the 'Manchester Bobber'.

The device will be showcased at the New & Renewable Energy Centre (NaREC) in Blyth, Northumberland, on September 19th.

The Manchester Bobber uses the rise and fall (or 'bobbing') of the water surface. This movement transmits energy, which is then extracted by the mechanics to drive a generator and produce electricity.

The researchers'  vision is to have a series of Bobbers working together to generate electricity. One concept which is currently being explored is the use of decommissioned offshore rigs as platforms for the devices.

"Energy from the sea may be extracted in many ways and harnessing the energy from the bobbing motion of the sea is not a new idea. It is the hydrodynamics of the float employed by the Manchester Bobber that provides the vital connection to generating electricity," said Professor Peter Stansby, co-inventor of the Manchester Bobber and Professor of Hydrodynamics at The University of Manchester.