Principles Wave Dragon

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1 principles

1.1 construction
1.2 design

1.2.1 main body







principles
construction

wave dragon uses principles traditional hydropower plants in offshore floating platform use wave energy.


the wave dragon consists of 2 wave reflectors direct waves towards ramp. behind ramp, large reservoir collects directed water, , temporarily stores water. reservoir held above sea level. water leaves reservoir through hydro turbines.


three-step energy conversion:


overtopping (absorption) -> storage (reservoir) -> power-take-off (low-head turbines)


main components of wave dragon:



main body double curved ramp (reinforced concrete and/or steel construction)
two wave reflectors in reinforced concrete and/or steel
mooring system
propeller turbines
permanent magnet generators

design

wave energy converters make use of mechanical motion or fluid pressure. wave dragon not have conversion, e.g. oscillating water/air columns, hinged rafts, , gyroscopic/hydraulic devices. wave dragon directly utilises energy of water s motion.


the wave dragon of heavy, durable construction , has 1 kind of moving parts: turbines. essential device bound operations offshore, extreme conditions , fouling, etc., affect moving parts.


wave dragon model testing has been used in order to:



optimize overtopping
refine hydraulic response: anti-pitching , anti-rolling.
reduce stress on wave reflectors , mooring system, etc.
reduce construction costs, maintenance , running costs.

main body

the main body or platform consists of 1 large floating reservoir. reduce rolling , keep platform stable, wave dragon must large , heavy. prototype used in nissum of traditional (ship-like) plate construction of plates of 8 mm steel. total steel weight of main body plus ramp 150 tons, 87 tons of water must added achieve 237 tons total weight needed stable continuous operation.








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