|
Number of Occupants |
|
|---|---|
|
Applicability |
All projects |
|
Definition |
The number of persons in a space. The number of persons is modified by an hourly schedule (see below), which approaches but does not exceed 1.0. Therefore, the number of persons specified by the building descriptor is similar to design conditions as opposed to average occupancy. |
|
Units |
The number of persons may be specified in an absolute number, ft²/person, or persons/1000 ft². |
|
Input Restrictions |
Defaults are provided in Appendix B, but other values may be used if they better represent the design conditions. |
|
Baseline Rules |
The number of occupants must be identical for both the proposed design and baseline building. |
|
Occupant Heat Rate |
|
|---|---|
|
Applicability |
All projects |
|
Definition |
The sensible and latent heat produced by each occupant in an hour. This depends on the activity level of the occupants and other factors. Heat produced by occupants must be removed by the air conditioning system as well as the outside air ventilation rate and can have a significant impact on energy consumption. |
|
Units |
Btu/h specified separately for sensible and latent gains |
|
Input Restrictions |
Defaults are provided in Appendix B, but other values may be used if they better represent the design conditions. |
|
Baseline Rules |
The occupant heat rate for the baseline building shall be the same as the proposed design. |
|
Occupancy Schedule |
|
|---|---|
|
Applicability |
All projects |
|
Definition |
The occupancy schedule modifies the number of occupants to account for expected operational patterns in the building. The schedule adjusts the heat contribution from occupants to the space on an hourly basis to reflect time-dependent usage patterns. The occupancy schedule can also affect other factors such as outside air ventilation, depending on the control mechanisms specified. |
|
Units |
Data structure: schedule, fractional. |
|
Input Restrictions |
Defaults are provided in Appendix B and C, but other values should be used when they are available and better represent the design conditions. |
|
Baseline Rules |
Occupancy schedules are identical for proposed and baseline building designs |
COMNET Appendix B (COMNET 2017) provides space level information on occupancy, lighting, and plug load schedules, as well as occupant density, allowed LPD, and occupant heat gain.
|
Number of Occupants |
|
|---|---|
|
Applicability |
All projects |
|
Definition |
The number of persons in a space. The number of persons is modified by an hourly schedule (see below), which approaches but does not exceed 1.0. Therefore, the number of persons specified by the building descriptor is similar to design conditions as opposed to average occupancy |
|
Units |
The number of persons may be specified in an absolute number, ft²/person, or persons/1000 ft². |
|
Input Restrictions |
The design occupancy is to be used when known. For cases where the design occupancy is not known, the number of occupants given by space function in COMNET Appendix B (COMNET 2017) can be used. |
|
Baseline Building |
Same as proposed |
|
Occupant Heat Rate |
|
|---|---|
|
Applicability |
All projects |
|
Definition |
The sensible and latent heat produced by each occupant in an hour. This depends on the activity level of the occupants and other factors. Heat produced by occupants must be removed by the air conditioning system as well as the outside air ventilation rate and can have a significant impact on energy consumption. |
|
Units |
Btu/h specified separately for sensible and latent gains |
|
Input Restrictions |
The occupant heat rate is determined by the user and, if unknown, can use the values in COMNET Appendix B (COMNET 2017) |
|
Baseline Building |
Same as proposed |
|
Occupancy Schedule |
|
|---|---|
|
Applicability |
All projects |
|
Definition |
The occupancy schedule modifies the number of occupants to account for expected operational patterns in the building. The schedule adjusts the heat contribution from occupants to the space hourly to reflect time-dependent usage patterns. The occupancy schedule can also affect other factors such as outside air ventilation, depending on the control mechanisms specified. |
|
Units |
Data structure: schedule, fractional. |
|
Input Restrictions |
The actual occupancy schedule is to be used when known. When actual schedules are not known, default values specified in COMNET Appendix C (COMNET 2017) may be used. |
| Baseline Building | Same as proposed |