Take a quiz to test your pump knowledge. If you like learning about pumps, Cornell Pump School 2017 is less than three months away! You’ll be exposed to information in this quiz and much more at the training program more than 12,000 pump professionals have taken since 1949. Held in beautiful Portland, Oregon, the school offers two days of instruction and hand-on training. Find out more about Pump School 2017.
Take the five-question quiz here
And look at our blog for two other quizzes we’ve already published!
Cornell Pump was honored to give a refrigeration maintenance presentation to the Refrigeration Engineers and Technicians Association (RETA) chapter in the Tri Cities (Washington). Cornell Application engineer and an assembler went over the proper maintenance for our open (CB) series and hermetic (Arctic King) series.
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Let’s talk about the pros and cons of each of these.
If you start on the right side (maximum capacity) of a gradually rising pump curve, you will have a nice arched shape, and head (pressure) increases continually as capacity is decreased, and you move to zero flow. This pump will provide a medium change of head (pressure) as the flow increases or decreases, and pump operation is very “stable” as the flow and head relationship are well defined throughout the pump curve. This type of performance is usually preferred, as it usually is very compatible to most sensing/control accessories that may be used to control the pump.
With a steep centrifugal pump curve, you will have a steeper arch, resulting in a larger head (pressure) increase as the flow decreases, compared to the gradually rising curve mentioned above. This performance may be desired with some sensing/control equipment where a larger pressure differential is preferred, and with system requirements that have large pressure demands with fairly small flow changes. The stability of this curve is excellent due to the steeper continuously rising shape.
An operator may prefer a fairly flat pump curve in some systems, where he/she would like very little pressure increase as the pump flow decreases. In addition, the operator/designer would not need to be concerned about building large pressure levels as the flow varied, and could possibly use lower pressure rated piping and accessories. The pump stability of this curve is good.
f you have any questions regarding proper selection of your Cornell Pump, please contact any one of our technical salesmen for assistance.
CENTEX Africa had a contingent of pump professionals in for a Pump School the last couple days. Classroom presentations from Cornell Pumps PE certified engineers, as well as knowledgeable sales staff, was augmented by hands on learning in the factory.
