Membrane Envelope Energy Balance

Hi everyone,

it’s my first time here, so sorry for any mistakes.
I’m trying to study the energy exchange through a spherical envelope from the interior with the external environment, considering the sun loads. The shell of the building is a multiple layer, translucent polymer membrane covering an internal space like a dome.

I’m trying to write the script using ladybug for solar radiation and honeybee for the energy balance. I’m having some difficulties to characterize the envelope material, because it’s not an opaque or a window element.

Somebody have any idea about how I could fix the problem?
Any more suggestions for the development of the script?
Thanks a lot in advance for your help!

In EnergyPlus/Honeybee, anything that transmits light into an enclosed space is a Window/Aperture. So I suggest modeling it as such even though it doesn’t fit neatly into one category or another. Just try to match the SHGC and overall R-value of your translucent polymer assembly with the EnergyPlus window material you use to represent it.

Hi Chris, thanks a lot for your help!
I actually tried to model the element as window, but I’m unable because HB doesn’t allow me to model without gaps between the glazing layers. I also tried as Honeybee_NoMass Opaque Material, but as you said it doesn’t work because it’s not an aperture. I was thinking therefore to model the gap as a polymer layer, do you think it could be a good approach.
Thanks a lot!