Max Discharge Pressure - Turbine Driven Pump

[Chance17]

This may be a dumb question
but is it reasonable to expect a pump discharge pressure to exceed the turbine supply pressure?
or stated differently
can the discharge pressure exceed 135-psig if the turbine is driven with 135-psig steam?

 

[MisterDonut]

If I understand it correctly, you are asking about a pump that pumps a fluid, such as water, being driven by a steam turbine.
Yes, the disharge pressure on the fluid side can be greater than the steam pressure at the inlet of the steam turbine.

 

[Pumpsonly]

Instead of just giving you a Yes or No answer,may be you should tell us why do you think the pump pressure can not be higher than the steam pressure.

 

[rmw]

Geee....,

I can recall a BFP turbine driven pump set on a ~800 MW Supercritical unit that produced about 5500 PSIG discharge pressure with something like ~150 psi (extraction) steam.

How's that for turn-up?

I can't recall any more diverse than that.

rmw

 

[JJPellin]

Unless you are on the internet selling over-unity magnetic motors, the only limitation is this: The turbine driver has to produce more horsepower than the pump consumes. There is no relationship between steam pressure and pump discharge pressure. I was going to throw out an example from our plant. But, I have nothing that can complete with the excellent example that rmw has already provided.

Johnny Pellin

 

[hydtools]

Again, he [Archimedes] used to say, in the Doric speech of Syracuse : “Give me a place to stand and with a lever I will move the whole world.”

Ted

 

[Chance17]

Thank You to all for the excellent comments.