I have read through the posts on here about using the RoofVegetation (Grass) EP construction and have input those values into a simulation with outdoor surface temperatures as the output. This is a simple test comparing asphalt, concrete and grass.
Disregarding the discrepancies between the anticipated temperature differences of the materials and those generated by the simulation - a seemingly stranger issue seems to be that the RoofVegetation (Grass) is seemingly unaffected by context shade.
Is this a known issue, or is there an issue with my script?
This is an interesting finding, @Adam but it seems like it’s more a question for the EnergyPlus gurus and developers. It seems possible that the roof vegetation material isn’t affected by the E+ shadow calculation. Or maybe this issue is that you only included the vegetation layer and did not include a soil layer below it.
If the soil layer doesn’t fix it, it’s worth taking read through the description of the material in the EnergyPlus Input/Output reference:
And if that doesn’t yield any explanations, you should post the question to unmethours where the E+ gurus and developers are:
Thanks for the reply and suggestions Chris. I went ahead and tried adding a soil layer (MoistSoilForGround) under the vegetation layer. Unfortunately that didn’t fix it.
I’ll post to unmethours and see if I have any luck there. I will report any information back here for future reference.
