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During the test of a Pelton wheel, the pressure at the end of the 6.10" diameter nozzle was 515 psig when the flow is 2,615 ft/min. The peripheral coefficient is 0.46, the turbine specific speed is 6.20 rpm, and the penstock diameter is 1.5 feet. If the mechanical efficiency is 86% and electrical efficiency is 85%, determine the diameter of wheel in feet.

During the test of a Pelton wheel, the pressure at the end of the 6.10" diameter nozzle was 515 psig when the flow is 2,615 ft/min. The peripheral coefficient is 0.46, the turbine specific speed is 6.20 rpm, and the penstock diameter is 1.5 feet. If the mechanical efficiency is 86% and electrical efficiency is 85%, determine the diameter of wheel in feet.

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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During the test of a Pelton wheel, the pressure at the end of the 6.10" diameter nozzle was 515 psig when the flow is 2,615 ft/min. The peripheral coefficient is 0.46, the turbine specific speed is 6.20 rpm, and the penstock diameter is 1.5 feet. If the mechanical efficiency is 86% and electrical efficiency is 85%, determine the diameter of wheel in feet.
Transcribed Image Text:During the test of a Pelton wheel, the pressure at the end of the 6.10" diameter nozzle was 515 psig when the flow is 2,615 ft/min. The peripheral coefficient is 0.46, the turbine specific speed is 6.20 rpm, and the penstock diameter is 1.5 feet. If the mechanical efficiency is 86% and electrical efficiency is 85%, determine the diameter of wheel in feet.
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