Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Both "U_1K03" and "U_1K04" have duplicates (i.e. 2x instances of each in the IDF).
In addition, subsurfaces must link an opaque (base) surface; those are missing in both instances of "U_1K03" instances, and in one instance of "U_1K04". The other "U_1K04" instance does reference a base surface, "U_1D02":
FenestrationSurface:Detailed,
U_1K04, !- Name
Window, !- Surface Type
Exterior Window, !- Construction Name
U_1D02, !- Building Surface Name
, !- Outside Boundary Condition Object
, !- View Factor to Ground
, !- Frame and Divider Name
, !- Multiplier
4, !- Number of Vertices
Yet there are also 2x instances of "U_1D02" in the IDF: one facing outdoors, the other facing another surface, "1733D2".
I suspect you're after the latter: 2x matching interior walls. When matched interior surfaces reference each other this way, their coupled subsurfaces must also reference in each other as outside boundary condition objects. I suspect the 4x subsurface instances were meant to represent 2x pairs of matching subsurfaces. I haven't looked into the vertices, yet try the following corrections:
| | 2 | No.2 Revision |
Both "U_1K03" and "U_1K04" have duplicates (i.e. 2x instances of each in the IDF).
In addition, subsurfaces must link an opaque (base) surface; those are missing in both instances of "U_1K03" instances, and in one instance of "U_1K04". The other "U_1K04" instance does reference a base surface, "U_1D02":
FenestrationSurface:Detailed,
U_1K04, !- Name
Window, !- Surface Type
Exterior Window, !- Construction Name
U_1D02, !- Building Surface Name
, !- Outside Boundary Condition Object
, !- View Factor to Ground
, !- Frame and Divider Name
, !- Multiplier
4, !- Number of Vertices
Yet there are also 2x instances of "U_1D02" in the IDF: one facing outdoors, the other facing another surface, "1733D2".
I suspect you're after the latter: 2x matching interior walls. When matched interior surfaces reference each other this way, their coupled subsurfaces must also reference in each other as outside boundary condition objects. I suspect the 4x subsurface instances were meant to represent 2x pairs of matching subsurfaces. I haven't looked into the vertices, yet vertices; nonetheless, try the following corrections:
