Manchester Bobber: new renewable wave energy device
The University of Manchester, in partnership with Royal Haskoning and Mowlem plc is developing the patented new device, whose inventive features utilise the rise and fall (or ‘bobbing’) of the water surface. This movement transmits energy, which is then extracted by the device’s mechanics to drive a generator and produce electricity.
Harnessing energy in this manner is not an unusual concept; however the Manchester Bobber differentiates itself for a number of significant reasons: Unlike other wave energy devices, the Bobber’s mechanical and electrical components are housed in a protected environment above sea level, so that they do not actually make contact with the water. These components are also readily available, meaning that they are highly reliable when compared to devices with more sophisticated parts. This also results in greater ease of maintenance and repair due to easy availability.
In addition, unlike other wave energy devices, the Manchester Bobber will respond to waves from any direction without requiring adjustment and is also built to survive storm conditions.
The initial idea for the Manchester Bobber was conceived in January 2004 with the help of a 12 month Carbon Trust award. The design, development and testing of the device has been carried out at the University of Manchester.
Phase One of the project entailed the testing of 1/100th scale working model of the Bobber. This was successfully completed in January 2005, therefore Phase Two could be implemented. This involved a 1/10th scale version of the Bobber being constructed at NaREC, where testing on this model is being carried out over a two week period. If successful, Phase Three will involve the construction and testing of a full-scale prototype.