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Figure C– Summary of Inverse Age of Air Values
|
House conditions |
Wind speed (m/s) |
Inverse age of air (h-1) |
|||
|
KLA |
MBED |
BED2 |
BED3 |
||
|
All fans off |
0 |
0.16 |
0.17 |
0.18 |
0.18 |
|
5 |
0.17 |
0.19 |
0.18 |
0.19 |
|
|
Forced-air fan on; all exhaust fans off; interior doors open |
0 |
0.19 |
0.19 |
0.19 |
0.19 |
|
5 |
0.53 |
0.53 |
0.52 |
0.52 |
|
|
Forced-air fan on; all exhaust fans off; interior doors closed |
0 |
0.24 |
0.24 |
0.24 |
0.24 |
|
5 |
0.55 |
0.55 |
0.57 |
0.57 |
|
|
Intake on forced-air return; interior doors open |
0 |
0.32 |
0.32 |
0.32 |
0.32 |
|
5 |
0.63 |
0.64 |
0.62 |
0.63 |
|
|
Intake on forced-air return; interior doors closed |
0 |
0.38 |
0.38 |
0.38 |
0.38 |
|
5 |
0.65 |
0.63 |
0.65 |
0.65 |
|
|
Whole house exhaust in KLA zone; passive inlet vents; interior doors open |
0 |
0.40 |
0.37 |
0.31 |
0.35 |
|
5 |
0.55 |
0.42 |
0.39 |
0.44 |
|
|
Whole house exhaust in KLA zone; passive inlet vents; interior doors closed |
0 |
0.40 |
0.33 |
0.31 |
0.35 |
|
5 |
0.55 |
0.41 |
0.39 |
0.44 |
|
|
Whole house exhaust in BATH1 zone; passive inlet vents; interior doors open |
0 |
0.40 |
0.37 |
0.31 |
0.35 |
|
5 |
0.54 |
0.42 |
0.39 |
0.44 |
|
|
Whole house exhaust in BATH1 zone; passive inlet vents; interior doors closed |
0 |
0.39 |
0.32 |
0.30 |
0.30 |
|
5 |
0.51 |
0.39 |
0.39 |
0.41 |
|
|
Whole house exhaust in KLA zone; no passive inlet vents; interior doors open |
0 |
0.36 |
0.33 |
0.28 |
0.32 |
|
5 |
0.47 |
0.37 |
0.31 |
0.37 |
|
|
Whole house exhaust in KLA zone; no passive inlet vents; interior doors closed |
0 |
0.36 |
0.29 |
0.27 |
0.30 |
|
5 |
0.47 |
0.34 |
0.30 |
0.36 |
|
All values correspond to 20 °C (36 °F) temperature difference.
The values for nonzero wind speed are averages over
winds from the north, south, east and west.