Pumps

Cavitation is a destructive condition that can destroy the inside of a pump before you even realize it is occurring. Early detection can minimize damage, reduce downtime, and save money. Cavitation involves the creation of bubbles formed when the fluid being pumped vaporizes due to a decrease in pressure as the fluid enters the pump. These bubbles are then acted on by the pump impeller, causing them to implode.
Introduced to the market on June 8, 2009, the Multi-Stage CR-H provides a retrofit option for industrial users of traditional ANSI pumps.
In the Solution to Pump Challenge #3, we touched on efficiency and energy savings by approximating energy costs. Can we do this more precisely?
Several years ago, a golf course community wanted to adorn its entrance with a waterfall.
In Pump Challenge #3 (Pumping Prescriptions, September 2009), the specified parameters for energy estimation were 4,000 gpm and 400 ft.
I was recently invited to visit a petrochemical facility. Management claimed the facility had an average mean time between repairs (MTBR) of more than eight years.
A Simplified Method for Monitoring Pump Performance
Monitoring performance in the field has always been a challenge due to an absence of field-mounted instrumentation, the time required for testing, and imprecision from the cumulative uncertainty of all performance variables involved.
Tests show that solid-body plastic pumps are the best choice for oscillating applications.
As energy costs rise and energy efficiency becomes more important in operating pumping systems.
Power pump NPSH tests are performed by holding pump speed and discharge pressure constant and varying the NPSH available in the system.
Proper use of affinity laws can led to more accurate pump curve calculations.
A look at new tool that predicts how pumps and systems interact.
Test lab engineers perform 40 void tests in 10 days with results that could impact NRC regulations.
Back in the old days, level control had little or nothing to do with saving energy. In fact, it was often a necessary evil. Today, that is no longer true - the VFD offers the potential for power savings in lift station applications that range from a few hundred gallons per minute to those that have to move thousands of gallons each minute.
The conclusion of a two-part primer on optimal ways of lubricating the bearings in process pumps.
Reader responses to Pumps and Systems articles.

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Upstream Pumping Solutions

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