Search results for query: *

If the discharge piping is full of liquid, during start up, can a thrust balanced Vertical Turbine Pump go in up-thrust?

Can running a thrust balanced centrifugal stage in reverse rotation operation, ever go in up-thrust?

How does viscosity affects a multistage centrifugal pumps ability to handle air/liquid mixtures. As viscosity increases, can the pump handle more air or less?

When sizing centrifugal pumps, do we treat amines as compressible or incompressible? Thanks for this info above. Its helpful.

Can multistage centrifugal pumps be used to pump rich amines? Are there any special considerations to be kept in mind when sizing pumps for these applications?

How do we estimate the flow range or the operating range of a centrifugal pump being used as a reverse flow turbine?

Is there anything I can do to ensure there is no overspeeding?...Maybe use a clutch??

Martin I think your approach is straightforward. A question regarding the horsepower measurement. I am not sure what you mean by " to obtain the motor efficiency (so you can back it out from the total efficiency)and use a wattmeter"...which motor is this? I am planning on using a dyno...

How do we conduct performance tests on hydraulic power recovery turbines? Is there a standard or a document for conduction the same. My main concern is how to measure the KW Output. Thanks

I tried a whole lot of places and I was unsucessful. Any suggestion as to where to proceed?

I am looking for the following paper: "Dissimilarity Laws in Centrifugal Pumps AND Blowers" by Stepanoff and Stahl. Any thoughts on where I can find it?

Axial thrust

When we scale centrifugal pumps from a model to the actual scale, how do the thrust values change. I am trying to predict the thrust of the actual scale pump by measuring the thrust of the model.

I have 2 centrifugal pumpS having bep at capacities OF 100gpm and 500 gpm respectively. The impellers have the same outer diameter. My question is in viscous applications(say 500cP) which pump should have the least drop in head and flowrate(when comparing BEP IN OIL to BEP IN WATER).

In centrifugal and axial flow pumps, if we are pumping viscous liquids, does the axial thrust (determined for water) stay the same or does it reduce. If yes, how can we determine the value?

Thank you all you your help. I guess for the info I mentioned above of the vendor, the accuracy will be 0.1 % of the rate, for a turndown ratio of 300:1 with a repeatibility 0.02%.

When sizing a turbine flowmeter for an application, what will be the accuracy of a flowmeter when say for example the vendor gives the following info: Repeatability: ± 0.02% typical Turndown Ratio: (Models max. rated flow ÷ min. flow rate) Up to 1,000:1, reduced accuracy...

I am looking to test a single stage centrifugal pump for NPSH using a viscous oil instead of water. Would the results be the same as that of water and is there anything I need to be concerned about?

Can sulphide stress be caused in 304 stainless steel in presence of H2S and chlorides if it is under compressive load?

I want to test the pump and plot the NPSH curve. Please advice how to go about the process. I have no idea as what to measure and how to go about the process