ASHRAE+62.1-2022+(1) - Page 062

Extracted Content

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

Occupancy Category Description/Rationale

People Outdoor Air Rate, cfm/person

Area Outdoor Air Rate, Air

L/s·m [2] Class

People Outdoor Air Rate, L/s/person

Area Outdoor Air Rate,

cfm/ft [2]

Freezer and refrigerated spaces (<50°F [10°C])

General manufacturing (excludes heavy industrial and processes using chemicals)

Refrigerated warehouse spaces are significantly different from conventional warehouses in a number of ways. The low temperatures will slow the emission of contaminants, such as VOCs, from the materials stored in the space; the characteristics of the items being stored will be different; and the amount of time spent in the space by occupants may be shorter (particularly for spaces kept at subfreezing temperatures).

Occupant activity is moderate (standing, walking, assembly). Moderate levels of space-related contaminants are expected. The unknown nature of the contaminants leads to a category of Air Class 3.

10 5 0 0 2

10 5 0.18 0.9 3

5 2.5 0.18 0.9 2

5 2.5 0.12 0.6 1

10 5 0.12 0.6 1

7.5 3.8 0.12 0.6 2

7.5 3.8 0.06 0.3 1

10 5 0.06 0.3 2

Pharmacy (prep. area) Occupant activity is primarily light work and standing. There are space-related contaminants, including open containers of liquid medicines. The presence of these open containers results in this space being classified as Air Class 2.

Photo studios Occupant activity is primarily standing and light work. There are large quantities of chemicals, many of them open, resulting in higher levels of space-related contaminants.

Shipping/receiving Persons moving materials have a higher level of activity. The flow of products increases the level of space-related contaminants in addition to the typical use of forklifts.

Sorting, packing, light assembly

Occupant activity is moderate (standing, walking, assembly). There may be moderate levels of space-related contaminants.

Telephone closets This should be handled as unoccupied space.

Transportation waiting Occupant activity is primarily standing and moderate-to-heavy walking. There are no significant space-related contaminants.

Warehouses Occupant activity is moderate (standing, walking, assembly). There may be moderate levels of space-related contaminants.

Office Buildings

Breakrooms Occupant activity is primarily sedentary (seated). There are limited space-related contaminants. 5 2.5 0.06 0.3 1

Main entry lobbies Occupant activity is primarily transitory light walking. There are few anticipated space-related contaminants. 5 2.5 0.06 0.3 1

Occupiable storage rooms for dry materials

Occupant activity is primarily sedentary (seated). The concentration of stored products increases the level of spacerelated contaminants; however, dry material emissions are expected to be low.

5 2.5 0.06 0.3 1

Office space Occupant activity is primarily sedentary (seated). There are no significant space-related contaminants. 5 2.5 0.06 0.3 1

Reception areas Occupant activity is primarily sedentary (seated). There are no significant space-related contaminants. 5 2.5 0.06 0.3 1

Telephone/data entry Occupant activity is primarily sedentary (seated). There are no significant space-related contaminants. 5 2.5 0.06 0.3 1

Public Assembly Spaces

Auditorium seating area Occupant activity is primarily sedentary (seated). There are no significant space-related contaminants. 5 2.5 0.06 0.3 1