Comparing the result to the Efficiency Evaluator program in Pump Challenge #3, the effect of speed is not presented here because the difference was only about 1 percent, due to the pump size change and the Specific Speed factor effect. The effect of overall pump deterioration, like worn out rings (leakage), is a much greater concern in this challenge. Such effects greatly influence pump health (efficiency), and that is what we evaluated.
Life cycle losses can reach into the millions-even for relatively low power units (under 500 hp). Imagine what this may mean for even larger units, like main station feed pumps.
Click here for Pump Challenge #5: Correctly Sizing Pump