Dear Jean,
Thanks a lot for your advice. You are right, Radiance is more powerful for daylighting simulation.
Referring to figure 10 in the Input-Output Reference Manual of EnergyPlus, transparent glass should allow beam reflection. Referring to the attached "Input-Output reference Figure 10.PNG" file, I added some texts and a facade sketch in green.
If EnergyPlus can allow beam reflection using transparent glass, I would like to study daylighting (CIE clear sky) and energy utilization in an atrium model at the same time.
At present, I could only have diffuse reflection in my model. I could not understand how to achieve beam reflecton in my model.
Can anyone please kindly help me?
Best regards,
Stanley
Attachment not found: D:\Eudora\Attach\Input-Output reference Figure 10.png