Hi,
I have modelled a simple building with a single window using double glazing unit. I have used air filled and argon filled DGU in the window for two different cases. When I am running the program for warm and humid weather condition, the argon filled DGU is giving a lower U-value than the air filled one. But the SHGC as well as the cooling energy consumption are lower for the air filled DGU. Can anyone please justify this result? How is the SHGC being calculated in Energy Plus?
Thank you,
Amrita