hydraulic turbine

hydraulic turbine

[hī′drȯ·lik ′tər·bən]
(mechanical engineering)
A machine which converts the energy of an elevated water supply into mechanical energy of a rotating shaft.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

Hydraulic turbine

A machine which converts the energy of an elevated water supply into mechanical energy of a rotating shaft. Most old-style waterwheels utilized the weight effect of the water directly, but all modern hydraulic turbines are a form of fluid dynamic machinery of the jet and vane type operating on the impulse or reaction principle and thus involving the conversion of pressure energy to kinetic energy. The shaft drives an electric generator, and speed must be of an acceptable synchronous value. See Generator, Impulse turbine, Turbine

Efficiency of hydraulic turbine installations is always high, more than 85% after all allowances for hydraulic, shock, bearing, friction, generator, and mechanical losses. Material selection is not only a problem of machine design and stress loading from running speeds and hydraulic surges, but is also a matter of fabrication, maintenance, and resistance to erosion, corrosion, and cavitation pitting.

Pumped-storage hydro plants have employed various types of equipment to pump water to an elevated storage reservoir during off-peak periods and to generate power during on-peak periods where the water flows from the elevated reservoir through hydraulic turbines.

McGraw-Hill Concise Encyclopedia of Engineering. © 2002 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
RagnEaANr visited the Alternate Hydro Energy Centre at IIT Roorkee to understand the research work and various facilities including international level hydraulic turbine R&D laboratory for Hydro Power being undertaken by the Institute.
Sediment erosion in hydraulic turbine and experiences with advanced coating technologies, In: India Hydro 2005; International workshop and conference.
Works include hydraulic turbine modeling; six new 155-MW runners; six sets of guide vanes; six new 168.75-MVa generator stators; a machine condition monitoring system; six new digital governor systems including new cabinet actuators; refurbishment/replacement of turbine, generator and governor components; six digital static excitation systems; refurbishment of turbine inlet valves; and start-up, commissioning and performance testing.
In the simulation of power system, the mathematical model of hydraulic turbine and governing system is often simplified to improve the calculation speed [3,4], such as the use of linear model.
Li and Zhou [20] developed a gravitational search algorithm (GSA), which was applied to parameter identification of the hydraulic turbine governing system (HTGS), and analyzed the stability of the power system.
[4] simulated transient flow in hydropower plants by considering a nonlinear model of the penstock and hydraulic turbine. Selek et al.
An important part of hydropower plant is the hydraulic turbine governing system (HTGS), which serves to maintain safe, stable, and economical operation of hydropower generating unit [4].
Quite a few engineers were very pleased on knowing the performance of hydraulic turbine workshop in Mardan, which has so far produced 1,500 units without any research.
Some modules would contain hydraulic turbine generators or sluices, while wind turbines could be mounted on some as well.

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