Finding out the reflection caused by the solar panels

[Adeline]

Hello, 

I am currently faced with some technical difficulties while doing the simulation and would like to make an enquiry... 

I am trying to find the reflection data from the solar panels from the simulations, so that we are able to study how bright the reflection would be during different hours of the sun. However, from the advanced simulation, data related to reflection only comprise of ground reflection on front side and back side. Understand that PVSYST is not able to give the direct data for total amount of reflection, is there any other methods where we can do a self-calculation from the data's derived from the simulation? 

I tried doing some research and had the hypothesis that from the law of reflection, incident angle = reflected angle on smooth surface. So, using that as a basis, the total IAM loss could also apply to the reflected angle. Meaning the reflected angle would also have the same IAM loss however, after much digging, I found that that might not be the case.. So I am actually quite stuck and confused.. T-T 

 

My knowledge of this is really at the basic level so I could really use some help.

Thank you

[Michele Oliosi]

The issue of reflection is that it is not explicitly modeled by PVsyst (currently). You should therefore find an indirect way to estimate it, or, better, find another tool that is more adapted.

Also you interested in the reflection as a directional quantity? (for the purposes of glare regulations, for example). Or is are you interested in the amount of light “lost” to reflection, as a way to understand the energy flows?