Larger centrifugal pumps with horsepower over five are a great place to save energy in HVAC and plumbing systems. Historically, these larger pumps were typically …
Smart Variable Speed Centrifugal Pumps: Part 1 (Line Mounted)
This week and next we will talk about centrifugal pumps with the variable speed technology built into them. These pumps are called “Smart pumps.” Why …
Variable Speed Chilled Water Systems: Demand Reset
There are multiple methods to vary pump speed in HVAC chilled water systems. A common method is the use of a differential pressure transmitter at …
Hydronic Chilled and Condenser Water Pipe Sizing per the Michigan Energy Code
The R. L. Deppmann Monday Morning Minutes will look at near pump piping over the next several weeks. Let’s start by looking at pipe sizing …
Michigan Rolls ASHRAE 90.1-2013 into the 2015 Michigan Energy Code
The 2015 Michigan Energy Code is changing with an expected effective date of September 20, 2017. The long expected changes to the code were filed …