AIR LEAKAGE IN MODELING
Residential:
- Multifamily Performance Program Requires residential to be: 0.35 Air Changes Per Hour. See MPP Guidebook page 25. This does not include the mechanical venilation initiated by the exhaust fan of a bathroom or kitchen.
-
Infiltec.com has a collection of links on air leakage studies.
The Below table is from infiltec.com (UK) and shows values of Leakage per surface area exposed per type of building.
Table 1: ATTMA Air Leakage Index (m3/hr/m2 [cfm/ft2] @ 50Pa)
| Building Type (UK buildings) |
Best Practice Leakage Index |
Normal Practice Leakage Index |
| Offices (naturally ventilated) |
3.0 [0.1641] |
7.0 [0.3828] |
| Offices (mixed mode ventilation) |
2.5 [0.1367] |
5.0 [0.2735] |
| Offices (air conditioned/low energy) |
2.0 [0.1094] |
5.0 [0.2735] |
| Factories/Warehouses |
2.0 [0.1094] |
6.0 [0.3281] |
| Superstores |
1.0 [0.0547] |
5.0 [0.2735] |
| Schools |
3.0 [0.1641] |
9.0 [0.4922] |
| Hospitals |
5.0 [0.2735] |
9.0 [0.4922] |
| Museums and Archival Stores |
1.0 [0.0547] |
1.5 [0.0828] |
| Cold Stores |
0.2 [0.0109] |
0.35 [0.0191] |
| Dwellings (naturally ventilated) |
3.0 [0.1641] |
9.0 [0.4922] |
| Dwellings (mechanically ventilated) |
3.0 [0.1641] |
5.0 [0.2735] |
Comments (0)
You don't have permission to comment on this page.