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PRIMRE/Databases/Projects Database/Devices/Changshan Sharp Eagle
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Changshan Sharp Eagle
Changshan is a "sharp eagle" wave energy converter (WEC) researched, developed and designed by Guangzhou Institute of Energy Conversion (GIEC) of the Chinese Academy of Sciences and built by China Merchants Heavy Industry Co. Changshan is 40 m long, 40 m wide, and 19.6 m tall, and has a total installed capacity of 500 kW and a 500 kWh energy storage system. The sharp eagle technology consists of a number of wave-absorbing eagle-head-like buoys/floats connected to a hinged double floating body, forming a semi-submersible barge. Once deployed to the predetermined location, the main body of the device is ballasted with seawater to sink it to its semi-submersed working depth. It is then fixed in place with anchors that connect it to the seabed. Hydraulic cylinders installed in between the floats convert the incident wave energy into mechanical energy which in turn is used to pump a working medium oil from a low-pressure tank into a high-pressure energy accumulator. When the accumulator hydraulic energy is sufficient, high-pressure hydraulic oil is released by automatic controllers to drive hydraulic motors, which then generate electric power. Generally speaking, the energy conversion process can be summarized as: wave energy → mechanical energy → hydraulic energy → electrical energy.
Additional Information
Device Status
Is the device actively being developed or is available for purchase (active)? Or has development or support ended (inactive)?
Active
Technology Type
Power Take-Off
Mechanism that converts the motion of the prime mover into a useful form of energy such as electricity, learn more
Hydraulic Generator
Max Rated Power Capacity
The maximum amount of electricity that can be produced by the device, as rated by the manufacturer.
500 KW
Surface ExpressionTrue
Estimated TRL
Estimated Technology Readiness Level scale from 1 to 9 with 9 being the most mature technology
TRL Last updated: 21 August 2024
7
Energy Resource
- Wave
Water Column Position
Surface
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Submerged - Mid
Entire Water Column
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Submerged - Bottom
Last Modified
5 November 2024
Projects Using Changshan Sharp Eagle
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Citation Formats
“Changshan Sharp Eagle.” Marine Energy Projects Database: Devices, PRIMRE, United States Department of Energy, https://openei.org/wiki/PRIMRE/Databases/Projects_Database/Devices/Changshan_Sharp_Eagle. Accessed <day> <monthRoman> <year>.
Marine Energy Projects Database: Devices. <year>. "Changshan Sharp Eagle." Accessed <monthRoman> <day>, <year>. https://openei.org/wiki/PRIMRE/Databases/Projects_Database/Devices/Changshan_Sharp_Eagle.
