Screw Turbine
Archimedes Screw Generator (ASG), also known as Archimedes/Archimedean Screw Turbine (AST), Archimedean turbine or screw turbine is a hydraulic machine that converts the potential energy of water on an upstream level into work. This hydropower converter is driven by the weight of water, similar to water wheels, and can be considered as a quasi-static pressure machine. Archimedes screw generators operate in a wide range of flows (0.01 m^3/s to 14.5 m^3/s) and heads (0.1 m to 10 m), including low heads and moderate flow rates that are not ideal for traditional turbines and not occupied by high performance technologies. The length of the smallest and longest Archimedes screw generators are 1 m an 30 m respectively. Archimedes screws can be used to generate power if they are driven by flowing fluid instead of lifting fluid. Water transiting the screw from high to low elevation generates a torque on the helical plane surfaces, causing the screw to rotate. The Archimedes screw gen ...
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