Honeybee Intermezzo 10: Annual Irradiance Simulation
Create & Run the Annual Irradiance Simulation
1. Create a HB-Radiance » Recipes » HB Annual Irradiance component.
2. Connect the ‘wea’ result from the HB WEA from EPW component to the ‘_wea’ input.
3. Connect the ‘model’ result from the HB Assign Grids and Views component to the ‘_model’ input. You should pay attention to this, because it would create an error if you connected the ‘model’ result directly from the HB model component.
4. Define the orientation of the design. In this tutorial we are going to set the north vector along the positive direction of Y axis, facing the opposite direction of the aperture normal.
Create a Vector » Vector » Unit Y component and connect the ‘unit vector’ result to the ‘north_’ input.
Important to note: In general, you should set the north vector according to the north orientation of the location where your building is placed.
5. Create a HB-Radiance » Recipes » HB Radiance Parameter component.
6. Use a Params » Input » Number Slider to define the type of recipe for which you want to define the radiance parameters. In the case of annual analysis, you should set the value to 2.
7. Use a Params » Input » Number Slider to define the detail level of the analysis. For this tutorial, use a Params » Input » Number Slider and set it to 2 (High Detail Level).
For further information on which detail level of radiance parameters you should choose or how you can select customized values, check the:
8. Create a Params » Input » Boolean Toggle component and connect it to the ‘_run’ input of the HB Annual Irradiance component.
9. Double-click the Boolean Toggle component in order to set it to ‘True’ and run the simulation.
Important to note:
1. Different values can be produced through this simulation. They correspond to indicators, such as the average irradiance, the cumulative radiation or the highest irradiance values for each sensor over the Wea period.
However, the more common indicators for irradiance analysis are the cumulative ones, i.e. the cumulative radiation.
2. In this tutorial, the HB Annual Irradiance component will be used for this reason and not the HB Cumulative Radiation, since the approach followed for the calculation is considered to produce more accurate values.
Post-processing the results
For easier comprehension, you can visualize the results as shown in:
Important to note:
In this case, that the resulting values do not refer to a percentage, there is no need to set the max value of the legend to 100. You should leave the 'max_' input empty in order for the program to adjust it based on the resulting values of every iteration.