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GT Internal Cooling

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MrMyers

MrMyers

Mechanical
Joined
May 27, 2007
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70
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Experts,

Obviously answers to this question will be somewhat turbine specific, but I am after a ball park figure.

What percentage of the total air mass flow rate through the compressor is extracted for use cooling the bucket internal passages?

I have heard reference to 1-2% per stage, which is believable, but also reference to 10%+ per stage.

Thanks

 
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Per EPRI, a 11 hole stage has 1.4% cooling flow. GE unit.
 
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