Feedwater Heater operating pressure

[PMCap]

I have 5 feedwater heaters in series. Feedwater inside tubes and steam inside shell.

I am looking at the middle #3 heater.

Does the steam shell side operating pressure vary from the steam inlet nozzle to the drain outlet nozzle before any valve?

If I have several same size steam inlet nozzles at different locations in the shell> Do I need to consider different operating pressures at different heater shell side nozzle locations when calculating the mass flow rate through each inlet nozzle.

 

[EdStainless]

The pressure in the steam space of the heat will be the same everywhere.
There may be a little pressure drop based on steam cooling and the resistance to flow through the tube bundle but it will be very minor.
In the condensate drain section the pressure is supposed to be much lower, the end plate should provide restriction to flow.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube

 

[bimr]

No, pressure will be the same everywhere.