When the motor amps are kicking a unit offline, the first question is whether the motor or the pump is the problem.
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Using pump system analysis, from simple to the complex
Multiple pumps operating in complex systems can be synchronized and controlled by a computer. In this column, I will discuss several simplified cases, to give an idea of how pump system interactions are handled and what is involved. This column will also discuss how friction, static, and combination system hydraulics affect the system's results.
South Coast Water District (SCWD) provides water to more than 40,000 residents and two million visitors a year in the coastal communities of southern Orange County, California. The water system includes chloraminated water purchased from the Metropolitan Water District of Southern California and stored in a 47 million gallon reservoir located in Dana Point, Calif. pump system optimization
Learn about intelligent pumps and their ability to improve fluid handling. pump efficiency
Q. For centrifugal pump impellers, what is momentum change, and what is its significance?
Water shortages, failing infrastructure, broke governments, a crumbling municipal bond market and the need for high subsidies. While the global pump community tools up to participate in the business of water, the question remains: From where will the funding come?
In the late 90s, I used Excel to develop a simple graphical system that showed the variable speed performance of a pump based upon its published 60-hz H/Q curve. I have modified it to model several different pumping applications, and four different versions are on my website today.
Part One of this series addressed potential reliability improvements from using nonmetallic wear rings with reduced clearance. Part Two evaluated the efficiency gains from reduced clearance. In this final look at pump wear rings, the safety impact of nonmetallic rings with reduced clearances is examined.
Some may question if this is an appropriate topic for a pump magazine. While I do admit that I am a staunch conservative, this column is not about the political left. Instead, it addresses a very different left-the left side of a centrifugal pump's performance curve.
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Charlie Jackson was unaware of any centrifugal pump manufacturer that knew how to calculate hydraulic axial thrust produced within liquid ends of their pumps.
Standards for repair will begin with a standard for vertical turbine pumps.The pump industry is undergoing renewed interest in the technical aspects and quality of repairs.
The performance of a centrifugal pump with a trimmed impeller will follow the affinity laws as long as that trim is relatively small.
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The performance of a centrifugal pump with a trimmed impeller will follow the affinity laws as long as that trim is relatively small.
Standards for repair will begin with a standard for vertical turbine pumps.The pump industry is undergoing renewed interest in the technical aspects and quality of repairs.
Charlie Jackson was unaware of any centrifugal pump manufacturer that knew how to calculate hydraulic axial thrust produced within liquid ends of their pumps.
