How to Pick a Centrifugal Pump Part 10: Over-Speeding an HVAC Pump Using a VFD
/Most--if not all--consulting engineers fear under-sizing pump head in a hydronic HVAC application. No one wants the owner to receive ....
Read MoreHow to Pick a Centrifugal Pump Part 4: Pump Coupling Types – Close, Split, or Flexible Coupled?
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Centrifugal HVAC and plumbing pumps may be direct closed coupled or flexibly coupled. Pump couplings serve an important purpose, the greatest of which is to...
Read MoreHow to Pick a HVAC Centrifugal Pump Part 3: Mechanical Room Space and Type of Pump Selected
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Space often equates to money in construction--a fact that can leave design engineers starved for mechanical space. This is what makes the idea of pipe-supported, inline pumps so attractive. Sometimes the choice is fine, other times it is not....
Read MoreHow to Pick a Centrifugal Pump Part 1: Designing for Owner Satisfaction
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Hydronic pumps all do the same basic thing—they circulate water. So why are there so many different types and configurations? And what criteria determines the best pump for a given application? That’s what we will be exploring in this series on "How to...
Read MorePart Load Efficiency Values (PLEV) Part 5: BTUH Load Output vs. Percent of Flow Tolerance
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We recently introduced the part load efficiency value (PLEV) aspect of the Bell & Gossett online pump selection tool. PLEV for pumps is based on flow rate while the Integrated Part Load Value (IPLV) for chillers is based on load. This final segment on PLEV will look at the difference.
Let’s begin by examining....
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