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  2. Wells turbine - Wikipedia

    en.wikipedia.org/wiki/Wells_turbine

    7 air flow (can also be in the other direction) The Wells turbine is a low-pressure air turbine that rotates continuously in one direction independent of the direction of the air flow. Its blades feature a symmetrical airfoil with its plane of symmetry in the plane of rotation and perpendicular to the air stream.

  3. Subsea technology - Wikipedia

    en.wikipedia.org/wiki/Subsea_technology

    Subsea technology involves fully submerged ocean equipment, operations, or applications, especially when some distance offshore, in deep ocean waters, or on the seabed. The term subsea is frequently used in connection with oceanography, marine or ocean engineering, ocean exploration, remotely operated vehicle (ROVs) autonomous underwater vehicles (AUVs), submarine communications or power ...

  4. Marine current power - Wikipedia

    en.wikipedia.org/wiki/Marine_current_power

    Marine currents can carry large amounts of water, largely driven by the tides, which are a consequence of the gravitational effects of the planetary motion of the Earth, the Moon and the Sun. Augmented flow velocities can be found where the underwater topography in straits between islands and the mainland or in shallows around headlands plays a major role in enhancing the flow velocities ...

  5. Development of tidal stream generators - Wikipedia

    en.wikipedia.org/wiki/Development_of_tidal...

    An upgraded 1 MW Deep-Gen IV turbine was developed while part of Rolls-Royce within the Reliable Data Acquisition Platform for Tidal (ReDAPT) project, partly funded by the Energy Technologies Institute. [97] The turbine rotor was 18 m in diameter, mounted on a 22 m long nacelle, with a mass of under 150 t. [98]

  6. General Electric LM2500 - Wikipedia

    en.wikipedia.org/wiki/General_Electric_LM2500

    The General Electric LM2500 is an industrial and marine gas turbine produced by GE Aviation.The LM2500 is a derivative of the General Electric CF6 aircraft engine.. As of 2004, the U.S. Navy and at least 29 other navies had used a total of more than one thousand LM2500/LM2500+ gas turbines to power warships. [1]

  7. Tidal stream generator - Wikipedia

    en.wikipedia.org/wiki/Tidal_stream_generator

    Two types of Tidal Stream Generators Evopod - A semi-submerged floating approach tested in Strangford Lough with SeaGen in the background.. A tidal stream generator, often referred to as a tidal energy converter (TEC), is a machine that extracts energy from moving masses of water, in particular tides, although the term is often used in reference to machines designed to extract energy from the ...

  8. Air-independent propulsion - Wikipedia

    en.wikipedia.org/wiki/Air-independent_propulsion

    Specifically, a conventional steam turbine power plant is powered by steam generated from the combustion of ethanol and stored oxygen at a pressure of 60 atmospheres. This pressure-firing allows exhaust carbon dioxide to be expelled overboard at any depth without an exhaust compressor. [citation needed] Each MESMA system costs around $50–60 ...

  9. Marine propulsion - Wikipedia

    en.wikipedia.org/wiki/Marine_propulsion

    Marine nuclear reactors, which appeared in the 1950s, produce steam to propel warships and icebreakers; commercial application, attempted late that decade, failed to catch on. Electric motors using battery packs have been used for propulsion on submarines and electric boats and have been proposed for energy-efficient propulsion. [1]