Daylight Factor
Last updated
Last updated
Run a daylight factor study for a Honeybee model.
Daylight Factor (DF) is defined as the ratio of the indoor daylight illuminance to outdoor illuminance under an unobstructed overcast sky. It is expressed as a percentage between 0 and 100.
Because daylight factor is computed using an overcast sky, it does not change with [North, East, South, West] orientation. As such, it is more suited to assessing daylight in climates where cloudy conditions are common. The "HB Annual Daylight" recipe yields a much more accurate assessment of daylight and is suitable for all climates, though it requires a significantly longer calculation time than Daylight Factor.
model [Required]
A Honeybee Model for which Daylight Factor will be simulated. Note that this model should have grids assigned to it in order to produce meaningfule results.
grid_filter
Text for a grid identifer or a pattern to filter the sensor grids of the model that are simulated. For instance, first_floor_* will simulate only the sensor grids that have an identifier that starts with first_floor_. By default, all grids in the model will be simulated.
radiance_par
Text for the radiance parameters to be used for ray tracing. (Default: -ab 2 -aa 0.1 -ad 2048 -ar 64).
run_settings
Settings from the "HB Recipe Settings" component that specify how the recipe should be run. This can also be a text string of recipe settings.
run [Required]
Set to True to run the recipe and get results. This input can also be the integer "2" to run the recipe silently.
report
Reports, errors, warnings, etc.
results
The daylight factor values from the simulation in percent. Each value is for a different sensor of the grid. These can be plugged into the "LB Spatial Heatmap" component along with meshes of the sensor grids to visualize results.
