NCARB - Practice Test PDD

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    Olivia Greene

    This question tripped me up as well. After looking closer at Architect's Studio Companion, their advantages vs disadvantages of active chilled beams is really misleading. "In comparison to all-air systems, active chilled beams can be quieter, provide more constant airflow and better control humidity." It goes on to say, "Exhaust air is normally not recirculated, reducing the chance of transporting air pollutants or contaminants from one part of the building to another." (both p. 178) Their commentary on humidity control seems to directly contradict their disadvantages, but my best guess was that this is the "best possible solution" scenario and the other two risk contamination, even with DOAS? Maybe someone else has a better explanation. 

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