Energy from Waves and Tides

By Rushil Desai and Macallan Brown

What is Wave Energy?

•an essentially shared, concentrated wind energy

•created from the transfer of energy from the wind as it moves above the water’s surface

•could play a major part in the world’s effort to fight climate change

•can provide many job oppurtunities in construction and maintenance

The Resource•The Wave energy around the British

Isles is equal to three times UK electricity demand, which means it is possible to convert a sizeable fraction of the wave energy to electricity

•it approx. could receive 15-25% of current UK demand

•Not everywhere is good for Wave Energy

Pelamis WEC•used to create energy by hydraulic

rams, which pump high pressure fluid through hydraulic motors

•180m long and 4m in diameter (each machine is rated at 750 KW)

•produces 25-40% of the full rate output and is mostly safe

•each machine can meet the sufficient power to power about 500 homes

Pelamis WEC

Waves&Whistles•as waves go by, the waves push wind

up turbulent generator and provide energy for the navigation light

•Limpet- is a shoreline energy/converter off the island of Islay

•uses the priciple of an esclitating water column

•Islay- it is a pneumatic power which is converted from wave energy

The Limpet

Attenuator

•are long multi-segmented floating structures that are parallel to the direction of the waves

•the different heights of the waves cause flexing where the segments connect and the flexing is connected to hydraulic pumps or other converters

Overtopping Devices

•Onshore and Offshore

•Let the reservoirs fill with water then let the water go down which powers the turbines (The Wave Dragon and TAPCHAN)

Works Cited•http://ocsenergy.anl.gov/guide/

wave/index.cfm

•http://www.pelamiswave.com/wave-energy/what-is-wave-energy

•http://www.pelamiswave.com/our-technology/pelamis-wec

•http://www.voithhydro.com/index_en.php