Hey Mostapha/Chris and others at Ladybug tools,
I am developing calculation recipies for SHGCdir and SGGCdif for kinetic design components on the facade. I understand that my design component needs to be parametrized to structure the calculation. The two quantities that I need are not static but need to be calculated for every situation that can occur.
A situation is characterized by:
The configuration state of the component (dynamic): in my case the angle of the shading slat
The physics of the component (static): dimensions of the window, physics of the glazing layer(s)
The placement of the component: façade orientation (azimuth and tilt)
The current position of the sun: two solar angles
The calculation component or routine is used every hour with the above list as inputs.
The trickiest part of the calculation is the angle of incidence of the direct solar rays, to be used for (a) the shading effect of the slat, and (b) the transmissivity through the unshaded part of the window.
Do you know where I could find the angle of incidence for every hour for a particular location ?