Question

1. What does the Best Operating Point (BOP) of a pump represent?

2. Predicted system curves and measured system curves don’t always match. Manufacturer provided pump curves and measured pump curves can also differ. What are some reasons why?

Answer 1

1-The best operating point or otherwise called as the best efficiency point is the operating point at which the pump operates at best efficiency and which results in less probability of failiure and hence increases the life span of the pump.

2-The predicted system curves and measured system curves and also the provided pump curves and measured pump curves differ due to various reasons such as:

-The Test specimen may be slightly better than pump that is sold for obvious marketing reasons.

-The testing environment and the pipes used are different on the field when compared to the actual test conditions.

-The head provided is not accurate.

-The pump may have worn out or may have additional losses due to slight manufracture irregularities leading to the result disparity between the curves.

-Additional use of valves and bends changes the curve structure.

-The accurately calliberated measuring instruments may not be use resulting in wrong data.