hi all
I'm just trying to do some simple validation tests for my locations weather datas in ecotect.
I derived weather data from meteonorm and ecotect calculates for the Global_hor_Radiation the same values as meteonorm with the given Beam and Diffuse_hor_Radiation.
calculated in Analysis->Solare Exposure->Incident
I made a cube of 10x10x10 meter for testing the incident solar radiation on inclined faces.
The Calculate -> Solar Access Analysis -> Incident Solar Radiation (Cumulative per Month) gives for the horizontal surface (roof) the ca. same value as the above calculation,
but for inclined surfaces (north-, east-, south-, west-elevations) the values are ca. a third to low in comparision to meteonorm.
Looking at the basic data of a selected surface, there are three attributes values while atribute1 is value containig the solar radiation. assuming atribute1=atribute2 + atribute3, i guess that atribute 3 is the diffuse component of the radiation.
So my question is, how is the diffuse radiation for inclined surfaces calculated and is there any ground reflection or albedo taken into account?
-rpict