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Electronically commutated motors (ECMs) will play an important role in compliance with increasing motor efficiency requirements from the U.S. Department of Energy (DOE). But how do these motors differ from century-old direct current (DC) motor technology….
Read MoreWe are almost finished building our e-1510 pump curve! In this final blog of our series, we’ll introduce positive suction head (NPSH) to our curve and explain what NPSH is and why it matters....
Read MoreThis blog introduces efficiency curves (islands) to our pump curve and examines the variables impacting pump efficiency. We also introduce a valuable equation for....
Read MoreIn Part 2 of our How to Build a Centrifugal Pump Curve series, we added five head/capacity curves to the e-1510 4BD pump curve we are building. These curves reflect the tested performance of pumps with various-size impellers. Now, it's time to focus on the pump’s power requirement and how it....
Read MoreIn Part 1 of our Building a Pump Curve series, we discussed the parts of an unplotted pump curve. Now it's time to add some curves! In Figure 1, we've added a single head/capacity curve for a 9.5-inch diameter impeller--the largest impeller that can be used with our example pump, a Bell & Gossett e-1510 4BD. During laboratory tests...
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