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By Chris Edmondson
Piping in a primary secondary pumping systems as a whole can be quite complex, but when it comes to the “primary” part of the system, there are really only two approaches: Dedicated or Non-dedicated.
Figure 1 shows the chillers in a primary secondary system piped with one pump per chiller. If the chillers
Are you involved in the design or installation of hydronic systems? Do you anticipate becoming involved?
If you answered yes to either of these questions, this blog series on primary/secondary pumping will interest you. If you are a hydronic’s veteran, feel free to skip the first few blogs in the series – they may be too much of a review. Better yet, pass them onto a junior associate and
By Chris Edmondson
Gone are the days of optional air or waterside economizing. Gone also are the days of waterside economizers piped in parallel. In other words, the “either/or” operation of the chillers and economizers that we’re all accustomed to will soon be a thing of the past.
Bell & Gossett’s System Syzer does all the piping calculations necessary to meet ASHRAE 90.1 and 189.1 requirements. JMP is committed to getting all our customers up-to-speed on ASHRAE 90.1 – 2010. We’ve already covered some of these topics in previous blogs, including changes to pressure booster design. Today’s blog focuses on the portions of 90.1 - 2010 that dramatically impact the selection of pumps and associated piping.
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