It is important to check the single pump operation when selecting parallel pumps for multiple constant speed cooling tower pumps. In the last R. L. …
Constant Flow Cooling Tower Pumps & Variable Frequency Drives (VFD)
The blistering hot weather here in southeast Michigan caused me to turn my attention to cooling tower pumps and their control. Cooling tower pump control …
Parallel Pumping: 2-Position Control Valves on Multiple Cooling Towers (Part 5)
Over the last few weeks the Monday Morning Minutes posts have looked at pumping issues with multiple condensers and pumps. One of our most-received questions …
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 …
Parallel Pumping in Condenser Applications: Automatic Differential Pressure Control (Part 3)
Chilled water condensers are normally operated as constant-flow devices and the pumps serving them are constant-speed. Why would you ever use a variable-speed drive for …
Parallel Pumps in Condenser Applications: Limiting the Flow Rate (Part 2)
In part 1 of this series we offered an example condenser water pumping system. The design of this example is 800 GPM per condenser for …
Parallel Pumping in Condenser Applications (Part 1)
Applying a single constant-speed pump for each condenser in a chilled water application is a normal design for the HVAC engineer. The chiller manufacturers suggest …
“What is Pulse Technology?” and “Why We Use it to Affect Water Quality.” – Part 3
The objective of water treatment is to:
*INHIBIT CORROSION, prevent mineral scale & control bacteria, biofilm & legionella. In this Monday Morning Minute, we will discuss the technology and the effect that pulse technology via the Griswold Wave product provides specific to corrosion inhibition.
“What is Pulse Technology?” and “Why We Use it to Affect Water Quality.” – Part 2
The objective of water treatment is to: *CONTROL BACTERIA, BIOFILM AND LEGIONELLA, Inhibit Corrosion, & Prevent Mineral Scale. In this Monday morning minute, we will discuss the technology and the effect that pulse technology via the Griswold Wave product provides specific to microbial control.
“What is Pulse Technology?” and “Why We Use it to Affect Water Quality.” – Part 1
The objective of water treatment is to: PREVENT MINERAL SCALE*, Control Bacteria, Biofilm And Legionella, & Inhibit Corrosion. In this Monday morning minute, we will discuss the technology and effect that pulse technology via the Griswold Wave product provides specific to mineral scale prevention.