Columns and Blogs

Tackling 4,000 years of pump technology and evolution in only eight pages of magazine space has been like trying to summarize War and Peace in one sentence.
Temperature changes can push pipe force beyond safe limits
Keeping a close eye on pump efficiency can lead to energy savings.

It's a New Year, time to make those New Year's resolutions.

How viscosity affects centrifugal pumps

One of the major impacts on motor life is common sense—or maybe the lack thereof!

There are several ways to control two identical, parallel pumps operating under variable frequency control in pumping applications.

This month we will quickly look at the load types that comprise a typical AC circuit.

As a follow up on my AC Motors series, I thought it would be a good idea to provide a short overview of work, power and torque as it applies to the AC motor.

Last month, we studied the properties and effects of resistive, inductive and capacitive loads in an AC circuit.

As a follow up on my AC Motors series, I thought it would be a good idea to provide a short overview of work, power and torque as it applies to the AC motor.

When selecting a pump for variable speed operation, a number of conditions must be evaluated.

I received many comments and suggestions on proper installation practices, following my article “Grouting: Pumps and Telephone Poles,” Pumps & Systems, July 2010).

Starting can have a significant effect on the life of the winding insulation of an AC motor.

Using pump system analysis, from simple to the complex

Energy efficiency and reduced consumption are important issues in the pump and motor marketplace.

This is a follow-up to my column on predicting centrifugal pump performance (Pump & Systems, May 2011), and offers equations that will enable the engineer to perform a partial analysis of the impeller eye.

The radial forces that form about the periphery of a single volute pump's impeller are proportional to total pump head, impeller diameter and vane width. They are seldom balanced, but they reach their lowest intensity between 80 and 100 percent of BEP flow.

Dr. Lev Nelik answers pump user questions.

About 900 years before Newton formulated his universal gravitational theory, the Greek philosopher Aristotle espoused something different.

Pages

See also:

Upstream Pumping Solutions

© Copyright Cahaba Media Group 2014. All Rights Reserved. Privacy Policy