A Francis turbine of diameter 3.0 m develops 6750 kW at 300 rpm under a net head of 45 m. A geometrically similar model of scale ratio 1: 8 is to be tested at a head of 9 m. Estimate the size, speed discharge and power developed by the model. What is the specific speed of the model? (Assume overall efficiency of 0.82 for both the prototype and model)

A Francis turbine of diameter 3.0 m develops 6750 kW at 300 rpm under a net head of 45 m. A geometrically similar model of scale ratio 1: 8 is to be tested at a head of 9 m. Estimate the size, speed discharge and power developed by the model. What is the specific speed of the model? (Assume overall efficiency of 0.82 for both the prototype and model)

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A turbine system is harnessing the energy of flowing water from reservoir 1 to reservoir 2. The difference in elevation between the two reservoirs is 120ft. For a design flowrate of 50ft^3/s, the head loss is 30ft. Solve the theoretical power extracted by the turbine. Neglect the difference in atmospheric pressure between the reservoirs. O 511hp O 402hp O 245hp O 281hp
For the figure shown, water flows at a rate of 2.5 ft3/s and the total head loss is equal to 61 times the velocity head in the pipeline. Diameter of the pipe is 8 inches throughout its length. Calculate the power (in horsepower) provided by the pump. Round off your answer into a whole number. Answer: P = P hp 50 ft
The flow rate of the hydroelectric power plant in the figure is 50 m3/s, and 2 meters of water column energy loss occurs due to friction in the pipeline. Find the power that water transfers to the turbine. Calculate the theoretical and actual power of the turbine by taking the efficiency of the turbine-generator group, η = 0.92. (Answer: Ntheoric=52 MW and Nreal=48 MW)
A turbine produces 8000 kW of power at 500 rpm under a net head of 45 m with an overall efficiency of 85%. Determine the revolution per-minute (rpm), discharge and brake power of the same turbine under a net head of 60 m in homologous conditions.
Problem 1: A solid steel shaft 5 m long is stressed at 80 MPa when twisted through 4º. Using G = 83 GPa, compute the shaft diameter. What power can be transmitted by the shaft at 20 Hz? (in Kilowatts)
A turbine is installed with a total energy head of 14.97 m. if the rate of flow is 0.48 m3/s,determine the following:a. The input horsepower of the turbine.b. If the efficiency of the turbine is 82 %, compute its output hp.
problem: A Pelton wheel has a mean bucket speed of 10 meters per second with a jet of water flowing at the rate of 700 liter/s under a head of 30 meters. The buckets deflect the jet through an angle of 160°. Calculate the power given by water to the runner and the hydraulic efficiency of the turbine. Assume co-efficient of velocity as 0.98.