Reducing the Transmission of Viruses with Humidification Part 1: Optimum RH Range

Reducing the Transmission of Viruses with Humidification Part 1: Optimum RH Range

Who would have imagined less than a year ago that our collective daily lives would be so greatly impacted by a single, air-borne virus? Yet here we are, recalibrating “normal” in the wake of COVID-19 (SARS- CoV-2). And while social distancing and masks dominate much of the public conversation, building humidification is the….

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A Better Way to Compare Pump Efficiency

A Better Way to Compare Pump Efficiency

Comparing pump efficiency just got a whole lot easier thanks to a new rating system developed by the Hydraulic Institute (HI). For the first time ever, pump specifiers or purchasers can go directly to an online tool where they can compare the numerical efficiency scores of any pump….

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ASHRAE 90.1-2010/2013: Impact on Variable Speed Pump Control in Chilled Water Systems

ASHRAE 90.1-2010/2013: Impact on Variable Speed Pump Control in Chilled Water Systems

Today we begin a series of blogs exploring modern variable speed pump control. While we have written about variable speeding pumping in the past, we believe that the increasing presence of variable speed systems, along with the rapid evolution of control options, warrants a comprehensive look at variable speed pump control as a...

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Part Load Efficiency Values (PLEV) Part 1: Introducing Bell and Gossett Terminology

Part Load Efficiency Values (PLEV) Part 1:  Introducing Bell and Gossett Terminology

Although the DOE’s new pump efficiency standards raise the bar for manufacturers to build more efficient pumps, its rating system should not be looked at as a shortcut to efficient pump selection. Careful consideration of part load efficiencies applied to realistic load profiles is still the only way ...

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