Specific Speed of Turbine kya hota hai What is specific speed of turbine

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The specific speed value for a turbine is the speed of a geometrically similar turbine which would produce unit power (one kilowatt) under unit head (one meter). The specific speed of a turbine is given by the manufacturer (along with other ratings) and will always refer to the point of maximum efficiency.
What is specific speed of hydro turbine?
Utilization of the three basic turbine types are within the following ranges of specific speed (calculated from rpm, kW and m):
What is the importance of specific speed of turbine?
Specific speed is an index used to predict desired pump or turbine performance. i.e. it predicts the general shape of a pumps impeller. It is this impeller's "shape" that predicts its flow and head characteristics so that the designer can then select a pump or turbine most appropriate for a particular application.
What is the SI unit of specific speed of a turbine?
The Specific Speed
of a turbine is the speed in rotations per minute (r.p.m.) at which a similar model of the turbine would run under a head of 1ft.
What is the unit of specific speed?
The usual symbol for specific speed in U.S. customary units is Ns. When suction specific speed is calculated using cubic meters per second and meters, the conversion factor to suction specific speed in U.S. gallons per minute and feet is 51.6
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The specific speed value for a turbine is the speed of a geometrically similar turbine which would produce unit power (one kilowatt) under unit head (one meter). The specific speed of a turbine is given by the manufacturer (along with other ratings) and will always refer to the point of maximum efficiency.
What is meant by specific speed of turbine?
Specific speed is defined as the speed of the turbine which is similar in shape and geometric dimensions with actual turbine but of such a size that it should develop unit power (1 kilowatt) when working under the unit head at its maximum efficiency.
What is the formula for specific speed?
Concept: The specific speed of a centrifugal pump is defined as the speed of a geometrically similar pump which would deliver one cubic metre of liquid per second against a head of one metre. N s = N Q H m 3 / 4.
What is specific speed and its significance?
Useful info on specific speed & suction specific speed
Specific Speed is a dimensionless rating of pump discharge performance derived from an equation involving shaft speed, flow rate and differential head at a pump's Best Efficiency Point. It is an important factor used in the design and selection of pumps and impellers.
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