• The Evolution of Primary/Secondary Pumping

The Evolution of Primary/Secondary Pumping

ASHRAE , 2020

Publisher: ASHRAE

File Format: PDF

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The concept ofprimary/secondary pumping has been around since the mid-1950s, when hydronicheating was in its infancy. Since its advent, this hydronic heating techniquehas been significant in the design of pumping systems for commercial heatingand chilled water-cooling systems, and, more recently, residential and lightindustrial systems.

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