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Occupancy Profiles by Day-Type and Space-Type

fraction of total people

1.0 0.8 0.6 0.4 0.2 0.0

1

3

5

7

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11

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15

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19

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23

Occ-LR-WD

Occ-LR-WE

Occ-BR-WD

Occ-BR-WE

Figure 31. Detailed hourly load profiles resulting from occupants being in different parts of the house on weekdays (WD) and weekends (WE)

For common areas in multi-family buildings, an example occupancy profile is shown in Figure 32. The maximum occupancy for the common laundry room is equal to the number of washing machines. The maximum occupancy for the workout room should be 3 unless otherwise documented. The maximum occupancy for the office and central restroom will be 3 and 0.33 respectively. (Partial person is due to a maximum of 2 people per hour at 10 minutes each). The load profiles for the office and central restroom are modeled as zero for Sundays and holidays.

Figure 32. Detailed hourly load profiles resulting from occupants being in different common spaces on specific days of the week

Example occupancy profiles for different day and room types are available in spreadsheet format on the BA Web site (http://www1.eere.energy.gov/buildings/building_america/ perf_analysis.html). These profiles, which were developed by NREL, are based on the basic ASHRAE occupancy schedule combined with engineering judgment.

  • The internal mass of furniture and contents shall be equal to 8 lb/ft2 of conditioned floor space. For solar distribution purposes, lightweight furniture covering 40% of the floor area shall be assumed.

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