Correct recipe type for Annual Irradiance (IRR)

grasshopper honeybee
,
1

Hi everyone,

my goal is to calculate/simulate the total amount of ground irradiation between shading obstacles in various timframes (hourly, daily, monthly, yearly).
For this task I am using the recipe ‘Annual Irradiance (IRR)’ within LBT 1.5.0.

Now I started testing the HB Radiance Parameters function with the goal to improve my results and wondered about:

  1. Is the Annual Irradiance Recipe even the best recipe for my purpose?
  2. If yes, what is the recipe type I should use in the HB Radiance Parameters to obtain the most accurate results for my purpose and why? As I realized that besides the default option (no HB radiance parameter connected to reciepe) both recipe type 0 and 2 are leading to plausible and more or less similar results in terms of mean values, but the homogeneity of the results differ, as you can see in the attached pictures:

Default Radiance Parameters of Recipe (Annual Irradiance IRR):
default

HB Radiance Parameters (recipe type 0) connected to Recipe* (Annual Irradiance IRR):
recipe_type_0

HB Radiance Parameters (recipe type 2) connected to Recipe* (Annual Irradiance IRR):
recipe_type_2

*Detail level set to 2 (high)

Thank you very much in advance for your help girls/guys :slight_smile: