Specific speed is a concept developed for water turbines1 in 1915, which was later applied to centrifugal pumps (Stepanoff, 1948). Specific speed is a way to “normalize” the performance of these hydraulic machines.
Head, performance curve and affinity laws all contribute to the efficiency of centrifugal pumps.
Biofuel production is one of the fastest growing sectors of the energy industry. To reduce our dependence on finite energy sources such as petroleum fuels and decrease the United States' CO2 emissions, biofuel production is projected to increase by nearly 40 percent, from 6.5 billion gallons per year in 2007 to 9 billion gallons per year in 2008.
For several years, the City of Inkster, Mich., had daily clogging issues with the non-clog pumps at its John Daily CSO station.
Do pumps require less NPSH on hydrocarbons?
Modifications can be made to many older pumps to improve on their original design.
Most financial decisions of any consequence at your facility are made by managers; Plant Managers, Project Managers, Operations Managers, Financial Managers, etc.
The volute serves a simple purpose in radial machinery: to transfer flow from an annular cross section to an exit pipe.
A few years ago, Corbin Spitzer from Spitzer Associates (Houston, Texas) correctly challenged a view in my article "10 Steps to Proper Alignment" (Pumping Prescriptions, October 2005).
Centrifugal Pumps have and will continue to be a vital player in the HVAC industry.