Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Both IO and Engineering References provide good overviews, IMHO. F/C factors are typically provided in building energy code appendices, e.g. ASHRAE 90.1 (SI) 2016 ... hopefully, fair infringement of copyright here:
Construction:FfactorGroundFloor objects are very straightforward: In addition to F-factors, provide slab area and exposed slab perimeter.
The initial IO link provides clear guidance on how to determine monthly ground temperatures, based on the EPW entries (e.g. VNM_Hanoi.488200_IWEC.epw). Search for "GROUND TEMPERATURES". But as stated in the docs, this is optional.
| | 2 | No.2 Revision |
Both IO and Engineering References provide good overviews, IMHO. F/C factors are typically provided in building energy code appendices, e.g. ASHRAE 90.1 (SI) 2016 ... hopefully, fair infringement of copyright here:
Construction:FfactorGroundFloor objects are very straightforward: In addition to F-factors, provide slab area and exposed slab perimeter.
The initial IO link provides clear guidance on how to determine approximate monthly ground temperatures, based on the EPW entries (e.g. VNM_Hanoi.488200_IWEC.epw). Search for "GROUND TEMPERATURESTEMPERATURE". " entries (present in both "VNM_Hanoi.488200_IWEC.epw" and "THA_Bangkok.484560_IWEC.epw"). But as stated in the docs, this is optional.
| | 3 | No.3 Revision |
Both IO and Engineering References provide good overviews, IMHO. F/C factors are typically provided in building energy code appendices, e.g. ASHRAE 90.1 (SI) 2016 ... hopefully, fair infringement of copyright here:
Construction:FfactorGroundFloor objects are very straightforward: In addition to F-factors, provide slab area and exposed slab perimeter.perimeter. These would remain as is if simply changing building location.
The initial IO link provides clear guidance on how to approximate monthly ground temperatures, e.g. based on EPW "GROUND TEMPERATURE" entries (present (0.5m-deep values are available in both "VNM_Hanoi.488200_IWEC.epw" and "THA_Bangkok.484560_IWEC.epw"). But as stated in the docs, this is optional.optional as EnergyPlus will automatically extract these entries from the EPW.
| | 4 | No.4 Revision |
Both IO and Engineering References provide good overviews, IMHO. F/C factors are typically provided in building energy code appendices, e.g. ASHRAE 90.1 (SI) 2016 ... hopefully, fair infringement of copyright here:
Construction:FfactorGroundFloor objects are very straightforward: In addition to F-factors, provide slab area and exposed slab perimeter. These would remain as is if simply changing building location.
The initial IO link provides clear guidance on how to approximate monthly ground temperatures, e.g. based on EPW "GROUND TEMPERATURE" entries (0.5m-deep values are available in both "VNM_Hanoi.488200_IWEC.epw" and "THA_Bangkok.484560_IWEC.epw"). But as stated in the docs, this is optional as EnergyPlus will automatically extract these entries from the EPW.
| | 5 | No.5 Revision |
Both IO and Engineering References provide good overviews, IMHO. F/C factors are typically provided in building energy code appendices, e.g. ASHRAE 90.1 (SI) 2016 ... hopefully, fair infringement of copyright here:
Construction:FfactorGroundFloor objects are straightforward: straightforward. In addition to F-factors, provide slab area and exposed slab perimeter. These would remain as is if simply changing building location.
The initial IO link provides clear guidance on how to approximate monthly ground temperatures, e.g. based on EPW "GROUND TEMPERATURE" entries (0.5m-deep values entries. Values at 0.5m depth are available in both "VNM_Hanoi.488200_IWEC.epw" and "THA_Bangkok.484560_IWEC.epw"). But as EPWs:
As stated in the docs, this is optional as EnergyPlus will automatically extract these entries from the EPW.EPW if needed.
| | 6 | No.6 Revision |
Both IO and Engineering References provide good overviews, IMHO. F/C factors are typically provided in building energy code appendices, e.g. ASHRAE 90.1 (SI) 2016 ... hopefully, fair infringement of copyright here:
Construction:FfactorGroundFloor objects are straightforward. In addition to F-factors, provide slab area and exposed slab perimeter. These IDF entries would remain as is if simply changing building location.
The initial IO link provides clear guidance on how to approximate monthly ground temperatures, e.g. based on EPW "GROUND TEMPERATURE" entries. Values at 0.5m depth are available in both EPWs:
As stated in the docs, this is optional as EnergyPlus will automatically extract these entries from the EPW if needed.
