Making the Switch to Variable Speed Area Control with DP Sensor(s)
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What is the one piece of hardware in a hydronic system that distinguishes Variable Speed Curve Control from Variable Speed Area Control?...
Read MoreMr. Creep and the Undermining of Variable Speed Curve Control
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We call him Mr. Creep.
Mr. Creep is not an actual person but rather a phenomenon of an ever-increasing control head in a variable speed pumping system caused by frequent incidents of underflowing coils, the result of which is progressive increases in operating cost and potential non-compliance....
Read MoreThree Types of Curve Control for Variable Speed Pumping Systems
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We’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 MoreFlow Tolerance in a System with Variable Speed Pump Control
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In our last blog we discussed how to leverage system diversity to maximize energy efficiency. Specifically, we learned that we can size heating or cooling capacity based on peak blog load rather than total connected load if the system is designed and operated correctly. Today, we will talk about flow tolerance and how ...
Read MoreDiversity in a System with Variable Speed Pump Control
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Comfort and efficiency are the ultimate goals of variable speed pump control. As technical as the discussions may become, it all comes back to comfort and efficiency. With that in mind, let’s review the concept of diversity, because managing system diversity enables us to...
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