I think the simplest way to varify the available energy at eye of the impeller is to apply basic Bernoulli equation taking impeller eye elevation as datum. This will chow clearly the available NPSHA. In this case the liquid is at boiling point. Refer book "Centrifugal Pump, Design and...
We have testd three high head multi-stage pump in LNG / LPG and obseved that all three pumps (Sp. speed 800, 1000, & 1250) have drooping head curve. Is there any solution or method to change this performance to continously rising curve to shutoff head by reworking on existing impller or...
