Marine energy

Marine energy
Renewable energy
Wind turbine

Biofuel
Biomass
Geothermal
Hydroelectricity
Solar energy
Tidal power
Wave power
Wind power

v · d · e

Marine energy or marine power (also sometimes referred to as ocean energy or ocean power) refers to the energy carried by ocean waves, tides, salinity, and ocean temperature differences. The movement of water in the world’s oceans creates a vast store of kinetic energy, or energy in motion. This energy can be harnessed to generate electricity to power homes, transport and industries.

The term marine energy encompasses both wave power — power from surface waves, and tidal power — obtained from the kinetic energy of large bodies of moving water. Offshore wind power is not a form of marine energy, as wind power is derived from the wind, even if the wind turbines are placed over water.

The oceans have a tremendous amount of energy and are close to many if not most concentrated populations. Ocean energy has the potential of providing a substantial amount of new renewable energy around the world.[1]

Contents

Potential of ocean energy

The theoretical potential is equivalent to 4-18 million ToE.

Theoretical global ocean energy resource[2]
Capacity
(GW)
Annual gen.
(TW·h)
Form
5,000 50,000 Marine current power[3]
20 2,000 Osmotic power
1,000 10,000 Ocean thermal energy
90 800 Tidal energy
1,000—9,000 8,000—80,000 Wave energy

Indonesia as archipelagic country with three quarter of the area is ocean, has 49 GW recognized potential ocean energy and has 727 GW theoritical potential ocean energy.[4]

Forms of ocean energy

Renewable

The oceans represent a vast and largely untapped source of energy in the form of surface waves, fluid flow, salinity gradients, and thermal.

Marine current power

The energy obtained from ocean currents

Osmotic power

The energy from salinity gradients.

Ocean thermal energy

The power from temperature differences at varying depths.

Tidal power

The energy from moving masses of water — a popular form of hydroelectric power generation. Tidal power generation comprises three main forms, namely: tidal stream power, tidal barrage power, and dynamic tidal power.

Wave power

The power from surface waves.

Non-renewable

Petroleum and natural gas beneath the ocean floor are also sometimes considered a form of ocean energy. An ocean engineer directs all phases of discovering, extracting, and delivering offshore petroleum (via oil tankers and pipelines,) a complex and demanding task. Also centrally important is the development of new methods to protect marine wildlife and coastal regions against the undesirable side effects of offshore oil extraction.

See also

References

  1. ^ Carbon Trust, Future Marine Energy. Results of the Marine Energy Challenge: Cost competitiveness and growth of wave and tidal stream energy, January 2006
  2. ^ International Energy Agency, Implementing Agreement on Ocean Energy Systems (IEA-OES), Annual Report 2007
  3. ^ US Department of the Interior (May 2006). "Ocean Current Energy Potential on the U.S. Outer Continental Shelf" (pdf). http://ocsenergy.anl.gov/documents/docs/OCS_EIS_WhitePaper_Current.pdf. Retrieved 2 November 2010. 
  4. ^ Indonesian Ocean Energy

External links


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Marine energy management — is the application of systematic methods to measure, register and analyze the energy usage of ocean going vessels in specific. The goal of marine energy management is to maximize the (electrical or mechanical) energy generated from the minimum… …   Wikipedia

  • European Marine Energy Centre — The European Marine Energy Centre (EMEC) is a Scottish Government backed research facility based in Stromness, Orkney that has installed a wave power testing system at Billia Croo on the Orkney mainland and a tidal power testing station on the… …   Wikipedia

  • Marine current power — is a form of marine energy obtained from harnessing of the kinetic energy of marine currents, such as the Gulf stream. Although not widely used at present, marine current power has an important potential for future electricity generation. Marine… …   Wikipedia

  • Marine freight —   Freight transported over rivers, canals, the Great Lakes, and domestic ocean waterways.   U.S. Dept. of Energy, Energy Information Administration s Energy Glossary …   Energy terms

  • Energy — This article is about the scalar physical quantity. For other uses, see Energy (disambiguation). Energetic redirects here. For other uses, see Energetic (disambiguation) …   Wikipedia

  • Energy management system — An energy management system (EMS) is usually a system of computer aided tools used by operators of electric utility grids to monitor, control, and optimize the performance of the generation and/or transmission system. The monitor and control… …   Wikipedia

  • Marine Le Pen — Marine Le Pen, president of the Front National pictured in January 2011 2nd President of the National Front Incumbent …   Wikipedia

  • Marine spatial planning — (MSP) is a tool that brings together multiple users of the ocean – including energy, industry, government, conservation and recreation – to make informed and coordinated decisions about how to use marine resources sustainably. MSP uses maps to… …   Wikipedia

  • Marine habitats — Coral reefs provide marine habitats for tube sponges, which in turn become marine habitats for fishes Littoral zone …   Wikipedia

  • Marine Corps Base Hawaii — Mokapu Peninsula, Oahu, Hawaiʻi Marine Corps Base Hawaii Insignia …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”