Our test well is fully installed and grouted, and we've waited a full five days for the ground to cool down after all that drilling and compressed air. It’s finally time to begin our 48-hour thermal geothermal conductivity test….

Our test well is fully installed and grouted, and we've waited a full five days for the ground to cool down after all that drilling and compressed air. It’s finally time to begin our 48-hour thermal geothermal conductivity test….

All centrifugal pumps in HVAC applications should be equipped with a shut-off valve, check valve, and a balance valve. Or, as an alternative, you can choose a valve that….

One of the greatest incentives for designing a chilled water system to be variable primary is reducing the likelihood and problems associated with low Delta-T syndrome. It is, after all, one of the most common and costly problems in standard primary secondary chilled water design. But how exactly does variable primary reduce…

In Part 2 of our How to Build a Centrifugal Pump Curve series, we added five head/capacity curves to the e-1510 4BD pump curve we are building. These curves reflect the tested performance of pumps with various-size impellers. Now, it's time to focus on the pump’s power requirement and how it....

Singular pump operation in a 2-pump parallel system occurs in one of two circumstances….