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If this series on variable speed pump control has taught us anything it’s that there is no one-type-fits-all control solution. Control strategies must be applied based on the system design as well as ...
Read MoreWe’ve been talking about variable speed control since September 11, 2017, beginning with this blog ASHRAE 90.1-2010/2013: Impact on Variable Speed Pump Control in Chilled Water Systems. Throughout our coverage of this topic, we have introduced and re-introduced the concepts of “Curve Control” and “Area Control” as variable speed pumping control strategies, each time digging a little bit deeper. Today we are going to take an all-inclusive look at Curve Control, because we feel like the concept is often misunderstood .....
Read MoreIn our last blog, we left you with two new terms, “Control Curve” and “Control Area,” indicating that any variable speed control strategy will be based on one or the other. What are these strategies and how do they differ? Before we pull out the curves, schematics and calculations, let’s start with a simple analogy...
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