Daysim Simulation Report
Daylit Area (DA300lux[50%]) |
37% of floor area | |
Mean Daylight Factor |
2.3% | |
Occupancy |
3650 hours per year | |
Glare |
0.8% of occupied hours | |
Shading Group 1 open |
61% of occupied hours | |
Daylight Factor (DF) Analysis: 28% of all illuminance sensors have a daylight factor of 2% or higher. Assuming that the sensors are evenly distributed across 'all spaces occupied for critical visual tasks', the investigated lighting zone does not qualify for LEED-NC 2.1 daylighting credit 8.1.
Daylight Autonomy (DA) Analysis: The mean daylight autonomy is 35% for active occupant behavior. The percentage of the space with a daylight autonomy larger than 50% is 37% for active occupant behavior.
Continuous Daylight Autonomy (DA) Analysis: The mean continuous daylight autonomy is 56% for active occupant behavior. The percentage of sensors with a DA_MAX > 5% is 16% for active occupant behavior
Useful Daylight Illuminance (UDI): The percentage of the space with a UDI<100-2000lux larger than 50% is 54% for active occupant behavior.
Electric Lighting Use: The predicted annual electric lighting energy use is:
- Lighting Group 1 (manual_control): 204.6 kWh
- Lighting Group 2 (manual_control): 215.4 kWh
Simulation Assumptions
Site Description:
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The investigated building is located in Boston (42.37 N/ 71.02 E).
User Description:
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The total annual hours of occupancy at the work place are 3650.
Lighting Control:
- Lighting Group 1 (manual_control): The system has an installed electric lighting power of 200.0W. It is manually controlled with an on/off switch.
- Lighting Group 2 (manual_control): The system has an installed electric lighting power of 100.0W. It is manually controlled with an on/off switch.
ShadingControl:
- ShadingGroup 1: The system is manually controlled according to the Lightswitch model.
