Answered: (c) A Francis turbine is designed to…

(c) A Francis turbine is designed to operate under a head of 30 m at 300 rpm. The specific speed w, = 1 and the expected efficiency is 90%. Calculate the desired flow rate and possible power output.

Sustainable Energy

2nd Edition

ISBN:9781337551663

Author:DUNLAP, Richard A.

Publisher:DUNLAP, Richard A.

Chapter14: Ocean Thermal Energy Conversion And Ocean Salinity Gradient Energy

Section: Chapter Questions

Problem 5P

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Concept explainers

Pressurized pipe flow

A 15-kilometer-long pipe with a pipe diameter of one meter transports water at a speed of one meter per second. The pipe has a friction coefficient of 0.005. Calculate the frictional head loss?

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(c) A Francis turbine is designed to operate under a head of 30 m at 300 rpm. The specific
speed w, = 1 and the expected efficiency is 90%. Calculate the desired flow rate and
possible power output.

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The water is pumped to a higher elevation. diameter = 450 mm pressure = 250 kPa (it is maintained at the summit point) *Summit point = the pipe is 110 meters above the water reservoir* Q (discharge) = 1.56 m^3/sec Total loss due to friction = 8 m Determine the output power that must be furnished to the water. Kindly refer to the figure below.
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The change in head across a small turbine is 10 m, the flow rate of water is 1 m³/s and the efficiency are 80%. The power developed by the turbine is approximately: