Understanding Primary Secondary Pumping Part 3: Avoiding Low Delta T Syndrome

By Chris Edmondson

Low Delta T Syndrome.  The terminology alone strikes fear in the hearts of anyone involved in chiller plant design or operation.  We know Low Delta T Syndrome is bad.  We know it wastes energy.  The very topic has given rise to countless technical articles and white papers that most of us haven’t the time or patience read.  But take heart because believe it or not, if you’ve read and understand Part 1 and Part 2 of this Series, you already have the building blocks to understand Low Delta T Syndrome.  You just don’t know it yet.

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Designing Waterside Economizer Piping to Meet ASHRAE 90.1 - 2010

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.

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