Ata particular stage of a reaction turbine the mean blade speed is 140 nı/sec and thesteam is at a pressure of 20 bar with temperature of 250° C. Fixed and moving bladesat this stage haye inlet angles 30° and exit angles 20°. The stage efficiency is 80%.Determine(i) Specific entholpy drop across the stage in kJ/kg.(ti) Drum Dia and blade height if heigh is one-twelfth of the drum dia. and the steamflow is 120 kg/sec.

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Answered: 20 bar with te angles 30° anc

Engineering

Mechanical Engineering

20 bar with te angles 30° anc

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

Ata particular stage of a reaction turbine the mean blade speed is 140 nı/sec and the
steam is at a pressure of 20 bar with temperature of 250° C. Fixed and moving blades
at this stage haye inlet angles 30° and exit angles 20°. The stage efficiency is 80%.
Determine
(i) Specific entholpy drop across the stage in kJ/kg.
(ti) Drum Dia and blade height if heigh is one-twelfth of the drum dia. and the steam
flow is 120 kg/sec.

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