Now that we’ve learned how to calculate a basic humidification load, we need to understand how to do the same when an economizer cycle is …
Calculating Natural and Mechanical Loads: Humidification Basics Part 4
How do we determine how much moisture should be added to the air for a given application? In other words, how do we calculate the …
Bell & Gossett Suction Diffuser Plus Product of the Year
Suction Diffuser Plus receives Bronze Award in annual reader’s choice program For the sixth time since 2010, Xylem Inc., a global water technology leader …
Psychrometrics Made Easy: Humidification Basics Part 3
What is psychrometrics? It’s a big and intimidating word to be sure and the common definition, the study of the physical and thermodynamic properties of gas-vapor …
How to Determine Impeller Size with Shut-off Head
Here is a quick way to determine impeller size from the No Flow point on the pump curve. Tools needed: 1) Pump curve. Select the …
Humidification Basics Part 2: Mastering Humidification Terms
Humidification is one of those areas where the terminology can often be a roadblock to understanding the topic. After all, we’re not all meteorologists! Since …
Humidification Basics: Why We Humidify in Building Design
Ever hear the phrase, “It’s not the heat, it’s the humidity”? It’s all about humidification in this Monday morning Minute series. In the commercial HVAC …
Parallel Pumping with Unequal Condensers (Part 4)
Over the last few weeks our Monday Morning Minutes posts have looked at pumping issues with parallel, equal-sized condensers and pumps. This week we will look …
Selecting the Proper Glycol Concentration for Closed-Loop HVAC Systems
There are two basic types of glycol protection available for your closed-loop HVAC system: “burst protection” and “freeze protection.” Burst protection is sufficient if the …
Bell & Gossett Part Load Efficiency Value (Part 5): BTUH Load Output vs. Percent of Flow Tolerance
The last four segments of the R. L. Deppmann Monday Morning Minutes introduced the valuable PLEV tool from Bell and Gossett. The part load efficiency …