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A pico hydro system made by the Sustainable Vision project from Baylor University [1]. Pico hydro is a term used for hydroelectric power generation of under 5 kW. These generators have proven to be useful in small, remote communities that require only a small amount of electricity – for example, to power one or two fluorescent light bulbs and a TV or radio in 50 or so homes. [2]
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[4] [5] The steps produce considerable energy dissipation along the chute [6] and reduce the size of the required downstream energy dissipation basin. [ 7 ] [ 8 ] Research is still active on the topic, with newer developments on embankment dam overflow protection systems, [ 8 ] converging spillways [ 9 ] and small-weir design.
A polynomial weir is a weir that has a geometry defined by a polynomial equation of any order n. [11] In practice, most weirs are low-order polynomial weirs. The standard rectangular weir is, for example, a polynomial weir of order zero. The triangular (V-notch) and trapezoidal weirs are of order one. High-order polynomial weirs are providing ...
A drop structure, also known as a grade control, sill, or weir, is a manmade structure, typically small and built on minor streams, or as part of a dam's spillway, to pass water to a lower elevation while controlling the energy and velocity of the water as it passes over.
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The E2 class included several features found on other LB&SCR classes including an I2 class boiler to accommodate the Weir pump and hot water injector for use on high-pressure steam. [1] They had slotted frames, six small 4 ft 6 in (1.372 m) driving wheels, and a water tank capacity of 1,090 imp gal (5,000 L; 1,310 US gal).
The water is then either filtered (sand or cartridge filter,) or settled (lamella clarifier or weir tank) prior to discharge. Chemical sediment control is currently used on some construction sites around the United States and Europe, typically larger sites where there is a high potential for damage to nearby streams. [3]