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. I will provide a reference to a more in depth study at the end of this article.
Thursday, September 1, 2011
What are the basics of gas lubricated seals? (Part One)
The use of gas lubricated mechanical seals in pumps has increased for a variety of reasons. This two part article will address the principles of gas seals, some basic application questions, what to expect from seal performance and the environmental factors that may affect performance.
Wednesday, August 31, 2011
The Submersible Pumps Market in North America
The North American submersible pumps market is a mature market in an uncertain economic climate, especially in the United States. Suppliers face a number of key challenges: general economic malaise, a housing industry downturn that has dramatically affected various markets including construction, and the threat of eroded funding (which affects the largest user industry: water/wastewater) from federal, state and local budgets.
Tuesday, August 30, 2011
Newtonian and Non-Newtonian Fluids
How viscosity affects centrifugal pumps
The Hydraulic Institute published a standard to account for the effects of viscosity of centrifugal pump performance. Effects of Liquid Viscosity on Rotodynamic Centrifugal and Vertical Pump Performance—available at www.estore.pumps.org—was revised in 2010. Before this publication, viscosity corrections were done using viscosity correction charts.
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