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?...
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Mr. 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 MoreManual Versus Automatic Balance in a Variable Speed Pump Control System
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We’ve talked about manual versus automatic balancing methods and we’ve talked about curve control versus area control. Now it’s time to consider the balance valve type impact on the pump control area. Let’s start this conversation with a question...
Read MoreTypes of Balancing Devices for Systems with Variable Speed Pump Control
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Today’s flow balancing devices for variable flow pumping systems fall into three main types...
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