Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
The short answer is that I believe that having a SurfaceProperty:SolarIncidentInside object inside a zone triggers EnergyPlus to turn off it's internal calculation for solar gain on surfaces.
The long answer (and why I believe what I stated above:
I ran a quick test on the example file for this object. The example file is "CmplxGlz_SchedSurfGains.idf"
For the test, I deleted the SurfaceProperty:SolarIncidentInside object for surface "ROOM102 FLOOR". If you look at the output file "CmplxGlz_SchedSurfGains_delete_surface.csv" - "ROOM102 FLOOR" reports 0 for all hours for Surface Inside Face Absorbed Shortwave Radiation.
I then further modified the file to delete all SurfaceProperty:SolarIncidentInside and ComplexFenestrationProperty:SolarAbsorbedLayers objects. Running this file resulted in Surface Inside Face Absorbed Shortwave Radiation reported for all faces, except for "ROOM102 South Wall". I'm pretty sure that "ROOM102" South Wall is not reporting Surface Inside Face Absorbed Shortwave Radiation due to the zone geometry.
The files can be viewed by following this [Dropbox Link.]
| | 2 | No.2 Revision |
The short answer is that I believe that having a SurfaceProperty:SolarIncidentInside object inside a zone triggers EnergyPlus to turn off it's internal calculation for solar gain on surfaces.
The long answer (and why I believe what I stated above:above):
I ran a quick test on the example file for this object. The example file is "CmplxGlz_SchedSurfGains.idf"
For the test, I deleted the SurfaceProperty:SolarIncidentInside object for surface "ROOM102 FLOOR". If you look at the output file "CmplxGlz_SchedSurfGains_delete_surface.csv" - "ROOM102 FLOOR" reports 0 for all hours for Surface Inside Face Absorbed Shortwave Radiation.
I then further modified the file to delete all SurfaceProperty:SolarIncidentInside and ComplexFenestrationProperty:SolarAbsorbedLayers objects. Running this file resulted in Surface Inside Face Absorbed Shortwave Radiation reported for all faces, except for "ROOM102 South Wall". I'm pretty sure that "ROOM102" South Wall is not reporting Surface Inside Face Absorbed Shortwave Radiation due to the zone geometry.
The files can be viewed by following this [Dropbox Link.]
