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3-D laser scanning is a relatively new technology that yields a three dimensional virtual record of a real object. The concept is simple and similar to police radar, but requires the power of modern day computers to collect and process enormous amounts of discrete data instantaneously.
Enterprising biosolids pump manufacturers are finding abundant new opportunities in the biosolids segment. With wastewater management becoming a key issue, everyone from truck owners to sludge treatment solution providers is trying to take advantage of the growing biosolids market.
Pumps & Systems , July 2008
No one would think about buying a car with poor gas mileage or purchasing an inefficient refrigerator. However, companies are purchasing pumps with open-faced impellers, which result in a tremendous loss of pump performance and efficiency. The pump performance and efficiency of an open-faced impeller continues to decrease as the impeller and the pump casing begin to wear. The performance and efficiency of an open-faced impeller is a function of the clearance between the impeller face and the suction volute or plate. A five point reduction in performance on a pump that is operating at 50 percent efficiency will translate into a 10 percent loss of efficiency and will continue to decrease as the impeller and casing housing wear.
Cavitation is defined as the phenomenon of formation and consequent implosion of vapor bubbles in a region where the pressure of the liquid falls below its vapor pressure. Cavitation can occur in any fluid handling equipment, especially in pumps.
Pumps & Systems , November 2007
Our repair shop came upon a customer that purposely buys oversized pumps and immediately operates them at nearly 80 percent closed valve. Each year, after the hot days of summer simmer down, they evaluate the pumps' performance by measuring flow. If the flow dropped by more than ~10 percent, they slightly open the valve (say 70 percent closed) to compensate and run the pump at this new valve position the next season.
Editor's Note: This is the third part of a series based on Optimizing Pumping Systems: A Guide to Improved Energy Efficiency, Reliability, and Profitability, written by pump systems experts. This new guidebook continues the mission of Pump Systems Matter TM (PSM) and the Hydraulic Institute (HI) to advance knowledge on pumping systems.
We all know that a pump operating at off-design (to the left or right of the best efficiency point—BEP) flow wastes energy. But how much?
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"So easy that even a caveman can do it,” as stated in a popular TV commercial, could easily be used to describe today’s predictive maintenance tools because they work so well.
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.
