Tubular water turbine

Characteristics of Tubular type unit: It has a good flow properties with compact structure, easy the installation and maintenance; it is suitable for low head and large discharge hydraulic performance, water head ranging from 3.5-20 meters. The Tubular turbine requires less space than other turbines. The Tubular turbine requires less space than other turbines. Civil costs saving is realized due to a smaller powerhouse and shallow requirement for the draft tube, whichis equipped with adjustable runner blades. This azrrangement provides the greatest possible flexibility in adapting to changing net head and changing demands for power output, because the gates the blades can be adjusted to their optimum openings. The Tubular turbines are the best selections for exploitation of hydraulic power with extremely lower heads and extremely large flow rates. The have large discharge, high specific and high efficiency, and need less excavation. They have been classified into Bulb, Pit, Siphon and “S” types according to their structural types.