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A screw turbine at a small hydro power plant in Goryn, Poland. The Archimedean screw is an ancient invention, attributed to Archimedes of Syracuse (287–212 BC.), and commonly used to raise water from a watercourse for irrigation purposes.
The screw pump is the oldest positive displacement pump. [1] The first records of a water screw, or screw pump, date back to Hellenistic Egypt before the 3rd century BC. [1] [3] The Egyptian screw, used to lift water from the Nile, was composed of tubes wound round a cylinder; as the entire unit rotates, water is lifted within the spiral tube to the higher elevation.
Archimedes screw: Water is fed into the top of the screw forcing it to rotate. The rotating shaft can then be used to drive an electric generator. A gear box is required, since the rotational speed is very low. The screw is used at low heads (1.5–5 metres) and medium to high flows (1 to 20 m 3 /s). For higher flows, multiple screws are used.
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Ruswarp Hydro or Whitby Esk Energy, is a Hydroelectric generation scheme that operates on the River Esk at Ruswarp, North Yorkshire, England.The project uses an Archimedes Screw in a reverse direction to generate electricity and was funded by people in the community. [1]
Archimedes Screw Pump. One of the US's oldest surviving examples of the wind-driven Archimedes screw-pump. 1890 Newark: California United States ASME brochure: 92: 1984 Stanford Linear Accelerator Center. Unique electromechanical devices and systems in the longest accelerator in the world. 1962 Menlo Park: California United States ASME brochure ...
The mill was built in the 15th century, and further extended in the 17th, 18th and 19th centuries. It is a Grade II* listed building and is preserved in an operational state. [1] [2] The mill also houses a micro hydro-electric power station, using a 3.6-metre (12 ft) Archimedes' screw turbine to generate electricity for sale to the National Grid.
The spiral pump, as many low lift pumps, is commonly used for irrigation purposes and for drainage of lands. Based on the same principle as the Archimedean screw, it consists of a rotating tube or plane (screw) to move a liquid. Unlike the Archimedean screw, it can pump while horizontal. The Archimedean screw must be tilted at an angle.
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