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Various items in Aomori Prefecture featuring kogin-zashi patterns. Kogin-zashi (こぎん刺し) is one of the techniques of sashiko, or traditional Japanese decorative reinforcement stitching, that originated in the part of present-day Aomori Prefecture controlled by the Tsugaru clan during the Edo period (1603-1867).
The runner of the small water turbine. A water turbine is a rotary machine that converts kinetic energy and potential energy of water into mechanical work. Water turbines were developed in the 19th century and were widely used for industrial power prior to electrical grids. Now, they are mostly used for electric power generation.
The gravitation water vortex power plant is a type of micro hydro vortex turbine system which converts energy in a moving fluid to rotational energy using a low hydraulic head of 0.7–3 metres (2 ft 4 in – 9 ft 10 in). This technology is based on a round basin with a central drain. Above the drain, the water forms a stable line vortex which ...
Download as PDF; Printable version; In other projects Wikimedia Commons; Wikidata item; ... Pages in category "Water turbines"
The Jonval turbine is a "mixed-flow" turbine design. Mixed-flow designs were well suited for the low-head applications common in the eastern United States. The smaller size, higher speed, higher power, lower cost, and ability to operate efficiently with variable water levels caused these and other types of hydraulic turbines to replace the ...
Most current hydroelectric projects use a large hydraulic head to power turbines to generate electricity. The hydraulic head either occurs naturally, such as a waterfall, or is created by constructing a dam in a river valley, creating a reservoir. Using a controlled release of water from the reservoir drives the turbines.
Between 2004 and 2010, [1] Lodewyk Botha and Marek Sredzki developed an inflow turbine that captures water's potential energy in addition to its kinetic energy. Principal patents [2] [3] for the technology were registered and published between 2005 and 2011. The first full-scale water wall turbine project was completed in 2016 by Water Wall ...
Print/export Download as PDF; Printable version; In other projects Wikidata item; Appearance. ... Pages in category "Water turbine manufacturers"