Create a model for the system below, which is a 10 ft x 10 ft x 1 ft "slice" of a cleanro particle count in any 1 ft3 unit in the volume (all other slices in the room are numericall so they can be ignored in this analysis). Assume that air only flows sideways when it by the equipment (dark gray) but ignore the effect of people on airflow. For recircul the air in Zone 1 (light gray) is recirculated whereas the portion of air recirculated in depends on the flow rate into this zone and the exhaust flow rate. Make-up filters HEPA/final filters Recirc Zone not filters influenced Zone 2 by exhaust influenced by exhaust 1 Equipment