Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
The under-floor air distribution model is covered in the Alternative Modeling Processes section of the Engineering Reference. Details are given in the implementation section.
Heat is exchanged via radiation from the upper subzone ceiling to the lower subzone via the IRT surface or surfaces between them. This is described in the section on Infrared Transfer Materials.
| | 2 | No.2 Revision |
The under-floor air distribution model is covered in the Alternative Modeling Processes section of the Engineering Reference. Details are given in the implementation section.
Heat It's not entirely clear to me which internal gains are applied in the occupied zone (presumably this is where People objects are located, and which in the upper zone (presumably most if not all Lights objects). It looks like that is up to the user to set via a gains fraction schedule for the occupied zone.
On heat transfer, heat is exchanged via radiation from the upper subzone ceiling to the lower subzone via the an IRT surface or surfaces between them. This is described in the section on Infrared Transfer Materials.. It should be noted that any short-wave radiation (light) will be converted to long-wave radiation (heat) as it passes through this object, and so any lighting results will not be calculated correctly if an IRT surface is present.
