We often receive requests for larger commercial reverse osmosis (RO) water systems. RO systems are advantageous in humidification systems where water quality is challenging. We …
Existing Hydronic System Volume Calculations
During a recent visit to a K-12 school hydronic system, I was asked if there was a way to determine the total system volume. My tongue …
Glycol Pressure Drop Corrections for Hydronic Systems (Part 2)
Last week the article covered pressure drop correction calculations. Today we offer you some handy charts to use for second glycol correction pressure drop. Example: I have calculated the water piping pressure drop through a chilled water system to be 80 feet using the System Syzer. Question: What is the pressure drop if I have 50% Ethylene Glycol/Water with temperatures of 45°F to 55°F? Answer: The average temperature is 50°F, so my factor is 1.47. [Read more…]
Pressure Drop Corrections for Glycol in HVAC Systems (Part 1)
Question: I have selected my piping friction loss based on water, but I am pumping a glycol solution. What correction do I use? Answer: There are three glycol corrections when designing a hydronic or process cooling system; heat transfer correction, pressure drop correction, and pump curve correction. This R L Deppmann Monday Morning Minute defines the second of three glycol corrections. [Read more…]
Ice Rink Cooling System – Commissioning the Glycol Expansion Tank
A customer recently called us about an unusual occurrence in a closed hydronic cooling system for an ice rink. The system was filled using a …
Tired of Water Quality Issues with Cooling Tower Basins?
What’s lurking in your traditional open cooling tower basin? Today, there is a growing concern about the sediment build-up, algae growth, and bacteria growth in …
Tower/Condenser Water Systems – Side Stream Separator Systems
When there is a concern about tower basin sediment build-up, there are several options. Traditionally, valuable maintenance personnel hours may be used shoveling the debris …
Primary – Secondary Sediment Separator Piping in Variable Flow Cooling Tower/Condenser Water Systems
The last R. L. Deppmann Monday Morning Minutes offered suggestions for the use of a Griswold sediment separator in a variable flow tower system. The …
Sediment Separators in Variable Flow Cooling Tower/Condenser Water Systems
A sediment separator will remove particles down to 20 microns or lower when properly sized and applied. This makes them a great choice in open …
Centrifugal Pump Gauge Readout: Adjustments to Balancing for Glycol Temperature
Glycol correction factors were the subject of many of the last few R. L. Deppmann Monday Morning Minutes. While writing these articles, I thought about …