Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
I have recently modeled UFAD in the VE. When the user guide refers to raising the SAT for account for the SA plenum, it is actually telling you to change the SAT used in the spreadsheet to calculate the required airflow. Not the SAT on the coil controls. It's a bit of an iterative process to get the airflow and SAT just right. Run it with the standard 55F SAT. Then figure out what the actual SAT to the zone is after it goes through the SA plenum. Then you can adjust the SAT value in the Room Design Airflows sheet of the spreadsheet, which will increase the airflow to the zones. You may need to repeat the process if the increased airflows significantly changes the resulting SAT to the zone.
