A successful flight is a matter of doing a number of small tasks correctly, and that's the approach Detroit Metro Airport took in its recent retrofit. While a new terminal got the headlines, retooling HVAC systems for existing space has revved up the savings and created first-class comfort High-profile items like BAS and new chillers led the way, but other moves like replacing three-way valves and adding stack economizers to boilers also helped overall efficiency return to its upright position.
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