Steam Consumption

What was the vendor's opinion when you called them?

I expect you to stop posting as ANON, fat chance of that too

You must be using light water instead of normal water. Light water has less power to it when used as feed water in a boiler. Try using heavy water.

Seriously... call the OEM.

Your point no. 3 couldd be a reason but, How this can happen in single stage Impulse turbine ??

Potential max. power of selected Turbine is 1.5 times higher than the Guaranteed Power.

Steam consumption is also 1.4 to 1.5 times higher than guaranteed Power.

Both are inline. But, Pump is running at Guaranteed Capacity.

Is the Nos. Steam Nozzles as well as the angle of steam Nozzles to Rotor Blade can create the problem of high steam consumption ??

Is the Selected Turbine Model of Higher rating than the required can create such issue ??

share your opinion.

Might be

1) instrumentation problem--check calibration

2) your calculation

3) efficiency of your turbine has been degraded.

As it is a single stage Turbine - between bearing type , in case if the Rotor of Turbine (Impulse turbine) installed in wrong direction is that can create the problem of high steam consumption ?

Turbine can rotate in same direction of rotation as required but, the losss of steam (not passing the Rotor) shall be more.

I think this shall also be checked.

Share your opinion.

You did not state what you are pumping.

If the fluid being pumped is more dense than water, there is the extra steam consumption requirement. Last time I checked pump power requirement is not quite linear with respect to density of the fluid.

Its BFW Pump.

Parameters related to Pump Operating condition are found ok.

If the temperature of the BFW is elevalted (after passing through feed-water heaters), there may be a compressive penalty, but I am not aware of that as long as the incoming pressure of the water and output pressures are accounted for along with the slight changes in specific volume of the fluid being pumped.

If errors are present in the measurement of steam parameters driving this turbine driven BFP, you need to understand this could make apparent steam consumption higher than "design", or if you have over-estimated the steam T,P, of course the consumption figure will be higher than the projection of use.