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Anonymous Poster #1

Pressure Surge in Pelton Turbine

11/11/2013 4:05 AM

Hi,

Regarding pressure surge -

The maximum hydraulic transients caused by the valve closure under any flow and turbine

speed to be less than what value of mWC. How to calculate this value for pelton turbine, if net

head is 510.79 metres.
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lyn
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Join Date: Oct 2008
Posts: 42355
Good Answers: 1693
#1

Re: Pressure Surge in Pelton Turbine

11/11/2013 9:52 AM

Ask the instructor.
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pnaban
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Join Date: Jun 2010
Location: srilanka
Posts: 2725
Good Answers: 5
#2

Re: Pressure Surge in Pelton Turbine

11/11/2013 10:37 PM

use slow closing valve

__________________
 pnaban
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Anonymous Poster #1
#3
In reply to #2

Re: Pressure Surge in Pelton Turbine

11/12/2013 3:42 AM

i think only rapidly closing valve with time constant smaller than critical time will give maximum transients ie max presure rise due to water hammer...

sks
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