In a mixed-air system, improper outdoor air mixing can lead to which consequence?

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Multiple Choice

In a mixed-air system, improper outdoor air mixing can lead to which consequence?

Improper outdoor air mixing in a mixed-air system disrupts how ventilation air blends with return air, which leads to energy waste and comfort problems. When outdoor air doesn’t mix properly, the system may condition air that isn’t effectively used for ventilation, causing overcooling or overheating and creating uneven temperatures and humidity. That means more energy is spent heating or cooling air, and occupants may experience drafts, hot or cold spots, and overall discomfort. Other choices aren’t right because improper mixing does impact energy use and indoor air quality, and it doesn’t improve filter life. Humidity changes do occur with outdoor air, and poor mixing can worsen IAQ if contaminants aren’t adequately diluted.

Improper outdoor air mixing in a mixed-air system disrupts how ventilation air blends with return air, which leads to energy waste and comfort problems. When outdoor air doesn’t mix properly, the system may condition air that isn’t effectively used for ventilation, causing overcooling or overheating and creating uneven temperatures and humidity. That means more energy is spent heating or cooling air, and occupants may experience drafts, hot or cold spots, and overall discomfort.

Other choices aren’t right because improper mixing does impact energy use and indoor air quality, and it doesn’t improve filter life. Humidity changes do occur with outdoor air, and poor mixing can worsen IAQ if contaminants aren’t adequately diluted.

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