ASHRAE+62.1-2022+(1) - Page 065

Extracted Content

Table J-1 Rate Rationale (see Table 6-1) (Continued)

Occupancy Category Description/Rationale

People Outdoor Air Rate, cfm/person

People Outdoor Air Rate, L/s/person

Area Outdoor Air Rate,

cfm/ft [2]

Area Outdoor Air Rate, Air

L/s·m [2] Class

Swimming  (pool and deck)

While the occupant activity (swimming) is high, it is primarily anaerobic. Occupancy is variable, and the high area outdoor air rate compensates for the varying occupancy and local source. Also, the bioeffluents, such as sweat are discharged into the water rather than the air. For these reasons, there is no occupancy-related outdoor air rate. The high level of chemicals in the pool water that are absorbed into the air as the pool water evaporates create exceptionally high levels of space-related contaminants. The presence of these chemicals, and their noxious odor, result in the space being classified as Air Class 2.

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