If a mechanical fan is moving 100 CFM of air, how much air will be replaced per minute?

When a mechanical fan is specified to move 100 CFM (Cubic Feet per Minute) of air, it indicates that the fan allows for the circulation or movement of 100 cubic feet of air through a designated space in one minute. This measurement of airflow helps determine the efficiency and performance of the fan in relation to its intended use, such as improving indoor air quality or enhancing the effectiveness of HVAC systems.

The unit CFM directly communicates the volume of air being displaced or replaced over a specified time period, which in this case is one minute. Consequently, if the fan is indeed moving 100 CFM, it is effectively replacing 100 cubic feet of air each minute within the space it is servicing. This makes the answer not only accurate but also essential for calculating necessary adjustments in ventilation processes or for maintaining proper air exchange rates in line with building performance standards. Understanding this concept is crucial for a BPI Building Analyst as it relates to ensuring efficient energy use and occupant comfort in buildings.