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Author: mohsen.amiri@gmail.c
Time: 06/13/16 22:18 PST
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Four Quadrants in Pupms Behaviour

Hi

1- Please have a look at below photo and describe second quadrant of pumps behavior when a transient fluid occurs. How Q and rpm can move and rotate against each other? I mean rotation of pump eliminates flow to move from discharge to suction side of it. 

2- What is relation between Specific Speed and these quadrants in pumps during transient analysis?

 

Four quadrant of pump

Thanx.

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