When looking at Bell and Gossett pump selections, we often find higher part load efficiency (PLEV) pump choices are to the right of the BEP, or best …
Bell & Gossett Part Load Efficiency Value Part 3: HVAC Pump Selection
In the last two Monday Morning Minutes, we introduced the PLEV, or Part Load Efficiency Value, from Bell and Gossett. When we use part load …
Bell and Gossett Part Load Efficiency Value Part 2: How to use PLEV
In the last Monday Morning Minutes post, we introduced the PLEV, or Part Load Efficiency Value from Bell and Gossett. This week we look at some …
Bell and Gossett Part Load Efficiency Value
The last three Monday Morning Minutes have introduced the U.S. Department of Energy 2020 pump standards. The Standard looks at efficiency of pumps equally at …
New Pump Efficiency Standards Part 3: Calculating PER Values
Under the DOE’s new efficiency standards for pumps, all Pump Efficiency Rating (PER) values use a full size or maximum impeller for a given pump …
New Pump Efficiency Standard Part 2: The Pump Energy Index (PEI)
Now that the U.S. Department of Energy (DOE) has published the first ever Energy Conservation Standards for Pumps, let’s take a look at some of …
New Pump Efficiency Standards Part 1: They’re Here, Now What?
Heat pumps have them. Air conditioners have them. Even light bulbs have them. And now, for the first time in history, clean water pumps have …
Parallel Pumping and Motor/Drive Efficiency for Domestic Water Pressure Boosters (Part 6)
In the last Monday Morning Minutes post, we explored motor and drive efficiency at part load conditions as a possible reason for the rule of …
Pumping System Efficiency for Domestic Water Pressure Boosters – Part 6
In last week’s Monday Morning Minutes (MMM) post, we offered some rules of thumb about using 100% standby pressure booster systems versus 50%-50% staged systems. So, why do …
Cost Analysis of Domestic Water Pressure Booster System Capacity Sizing Part 5
In last week’s Monday Morning Minutes (MMM) post, we looked at two different load profiles and introduced a capacity example with a range of variability …