# Centrifugal Pump Lab Report

The curve indicates the consumed power at 238.5 m³/h is 2600KW (power consumption was provided at the left side of the vertical axis).Compare 2600 KW with datasheet value which is 2985 KW.

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This is expressed in meter or feet and represents the usable mechanical work transmitted to the fluid by the pump. The test is carried out at a nominally constant shaft speed, and the head (H) decreases as flowrate (q) increases, giving a negative slope to the curve.

(See above H-Q curve) Look at the following sketch; this illustrates a simple H-Q curve loop.

So the measured head at the 238.5 m³/h is 2640 meter. The 3 % of the rated value (2690.28 x 3%) would be 80.7 which is greater than 50.28, the pump underperforming but the test result is acceptable.

Let's assess the power consumption; we repeat the same process but this time with the power curve.

The NPSH test, mechanical running test, and final inspection are done after performance test.

The vibration testing is carried out during performance test and mechanical running test.

The manufacturers also simulate the test result to actual field condition.

The pump might be designed for crude oil, but in the shop will be tested by the water.

The test engineer changes the flowrate through discharge control valve and takes measurement of different variables and calculates the corresponding head.

The first set of measurements is taken at duty point (100 percent q).

## Comments Centrifugal Pump Lab Report

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