From what I understand, @edpmay will likely know a bit more explicitly, but in the EnergyPlus I/O:
From What I understand: Where as we with the PHPP doing Passive House stuff; use the external surface for the ‘brep’ of a building.
WIth E+ using ‘0 thickness walls’ recommending centerline placement for interior; there’s a probability that there is going to be a bit of a disconnect from value of your TFA in the PHPP and an E+ model.
I’m probably not the best person to give a really good answer on this but Ed’s made some really cool tools for LBTools ==> PHPP9 so you can get your dynamic detailed E+ model and your PHPP model from the one mode:
So you lets say: drop your building’s floor plan dwg’s in Rhino; use the external line for exterior surfaces; internal wall centerlines for E+ then with LBT2PH can do your TFA actual off the inner room wall srfc lines; then have both!
http://www.passivehousetools.com/
with them I know you can create your HB rooms, then apply the TFA surface and params for pushing into the PHPP with the correct (for PHPP) TFA and Vv
hope there’s somthing in all that that helps!
-trevor