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 …
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 …
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 …
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 …
Bell & Gossett Part Load Efficiency Value Part 4: End-of-Curve Selections
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 …