Question-and-Answer Resource for the Building Energy Modeling Community
| 2014-09-12 07:54:17 -0500 | commented answer | What is the best way to model infliltration in a building? The PNNL report is a good guideline, I have used the 0.12 cfm/ft2 number on a few projects and it seems to get reasonable results. The advantage of using a per ft2 number is that you can start out setting it as a default for all zones and only the exterior zones will correctly show infiltration. You can get into trouble if you do that with a ACH number. The PNNL paper also suggests a schedule where the infiltration multiplier is 1 when fans are off and 0.25 when fans are on. |
