Flow exponent values an implications for air leakage
To ensure continuity, each assembly serving its role in resisting infiltration, such as a wall, window, foundation, roof, or skylight, must be interconnected to prevent air leakage
at the joints between materials, components, assemblies and systems.
Examples of typical air leakage
locations are shown in Figures 2 through 6 .
"We toured the house feeling where the heat was being lost using a `blower door' test that measures air leakage
and shows where leaks occur," says Buchman.
Since EnergyPlus is a widely used and validated simulation tool, but currently without the feature to account for moisture sources due to air leakage
, this paper focuses on an extension of the existing heat-air-moisture transfer model (HAMT) to account for such.
It is possible to calculate an aggregate compressed air leakage
rate from measuring the time and pressure during the compressed air system discharging and charging processes.
The first treatment was inadequate, but air leakage
was stopped after the second treatment.
Both laboratory measurements and field surveys have confirmed the existence of air leakage
from parallel FPTUs to the plenum space through the backdraft damper in the cooling mode.
When postoperative complications were considered, 12 children experienced long-lasting air leakage
that responded to drainage.
Wall Guardian FW-100A, a liquid-applied, fibered acrylic air barrier that likewise functions as water/ weather barrier and vapor retarder, exhibits an air leakage
rate of 0.0004 cfm/ft.2 @ 1.57 psf--well below the ASTM E2357, Standard Test Method for Determining Air Leakage
of Air Barrier Assemblies threshold.
Wall Guardian FW-100A exceeds ASTM E2357 (Standard Test Method for Determining Air Leakage
of Air Barrier Assemblies) with an air leakage
rate of just 0.0004 cfm/ft2 @ 1.57 psf--100 times better than the test requirement.
Together, both elements ensure that product degradation is minimal as the product travels through the valve and energy costs are reduced by cutting air leakage
by up to a third.