Answer / powerplant.calculations

Wheel chamber is a chamber provided on HP side of after impulse wheel.
The most of the (>50% of pressure at rated load) drops at wheel chamber,..AT lower load wheel chamber pressure drops.
As a thumb rule wheel chamber pressure is calculated as
Turbine wheel chamber pressure (kg/cm2) = (Turbine inlet pressure (kg/cm2) X Turbine operating load (MW) X 0.6)/Turbine rated capacity (MW).

Also refer QnA on Turbine
https://www.powerplantandcalculations.com/2020/06/steam-turbine-practical-questions.html

https://www.powerplantandcalculations.com/2020/05/vacuumtroubleshooting-steam-turbines27.html

And refer website
www.powerplantandcalculations.com

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