What is the approximate leakage pressure of the air seal in a back-pressure turbine?
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I checked some random sources but couldn’t find it. What’s the approximate value?
I don’t understand this question. Is there still steam leakage from the steam seal?
The steam seal is designed so that some of the steam escapes through the labyrinth seal while some enters the equipment; I’m not very familiar with back-pressure types
It’s around 3-4 bar; our turbines use medium-pressure steam
1 MPa – that’s the value required in our flowcharts