1 / 23

Exploring Ocean Energy Potential and Extraction Technologies

This presentation highlights the vast potential of ocean energy, including wave, tidal, salinity gradient, and thermal energies. It covers various extraction technologies such as oscillating water columns and point absorber buoys. Theoretical global resources and current electricity consumption are also discussed. The talk delves into current ocean energy projects worldwide, with examples like the Wave Star Energy and Wave Dragon installations. Additionally, it examines the advantages and challenges of harnessing ocean energy for sustainable power generation.

jamalv
Download Presentation

Exploring Ocean Energy Potential and Extraction Technologies

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Ocean Energy Kim Cobb with slides from Dr. Alam, MIT

  2. Estimates of 21st Century World Energy Supplies YEAR Edwards 2001 A barrel (42 U.S. gallons) of crude oil = 5.8 × 10^6 BTU = = 6000 MJ or about 1.70 MWh.

  3. Overview of Ocean Energy • ocean energy is replenished by the sun and through tidal influences of the • moon’s and sun’s gravitational forces • near-surface winds induce wave action and cause wind-blown currents at • about 3% of the wind speed • tides cause strong currents into and out of coastal basins and rivers • ocean surface heating by some 70% of the incoming sunlight adds to the • surface water thermal energy, causing expansion and flow • wind energy is stronger over the ocean due to less drag

  4. How much energy and what types? • 250 Billion barrels of oil worth of energy coming into ocean every day • 80 million barrels of oil per day produced kinetic potential

  5. How much energy and what types? • 250 Billion barrels of oil worth of energy coming into ocean every day • 80 million barrels of oil per day produced Theoretical global resource of ocean energy: 8,000-80,000 TWh/yr for wave energy 800 TWh/yr for tidal current energy 2,000 TWh/yr for salinity gradient energy 10,000 TWh/yr for ocean thermal energy World’s electricity consumption 17,000 TWh/yr

  6. Source of Ocean Wave Energy

  7. Oscillating Water Column (Energetech/Oceanlinx) Wave Energy Extraction Technologies Point Absorber (OPT, Finavera) Overtopping, Wave Dragon Attenuator, Pelamis WP

  8. Power From Ocean Waves kW/m crest length

  9. Wave energy is strongest on the west coasts and increases toward the poles. • At approx. 30 kW/mcl in the Northwest (yearly avg.), a single meter (3.3 feet) of wave has the raw energy to power about 23 homes. Power From Ocean Waves

  10. Point absorber buoys: most common

  11. Oscillating Water Column Installations: LAND NOTE: Plant Bowen (Georgia Power) operates at 3,200,000 kW

  12. Oscillating Water Column Installations: OCEAN

  13. “Overtopping” Wave Energy

  14. “Sea Snake” Wave Energy 121m long, 3.5m tall!

  15. Tidal Energy Conversion

  16. Ocean Thermal Energy Conversion

  17. 210 kW OTEC test plant, 1993-1998, Hawaii

  18. Future OTEC plant: grow food and fuel?

  19. Ocean Energy: Where are we today? • Wave Energy (grid-connected): • 0.4MW and 0.5MW OWC off the coast of Pico and Islay by 2008 • 2.25MW Pelamis off Portugal by 2008 • 0.5MW section of Wave Star Energy off Denmark by 2009 • 7MW Wave Dragon off Wales by 2010 • Tidal: • barriers: 240MW France in 1966 and 20MW in Canada • Current: 1.2MW off Ireland by 2009, 1MW France • Thermal: • 0.2MW Hawaii 1993-1998

  20. Ocean Energy: PROS and CONS?

More Related