Standard Test Method for Determining Air Leakage Rate by Fan Pressurization

Importancia y uso:

5.1 Air leakage accounts for a significant portion of the thermal space conditioning load. In addition, it affects occupant comfort and indoor air quality.

5.2 In most commercial or industrial buildings, outdoor air is often introduced by design; however, air leakage is a significant addition to the designed outdoor airflow. In most residential buildings, indoor-outdoor air exchange is attributable primarily to air leakage through cracks and construction joints and is induced by pressure differences due to temperature differences, wind, operation of auxiliary fans (for example, kitchen and bathroom exhausts), and the operation of combustion equipment in the building.

5.3 The fan-pressurization method is simpler than tracer gas measurements and is intended to characterize the air tightness of the building envelope. It is used to compare the relative air tightness of several similar buildings to identify the leakage sources and rates of leakage from different components of the same building envelope, and to determine the air leakage reduction for individual retrofit measures applied incrementally to an existing building, and to determine ventilation rates when combined with weather and leak location information.

Subcomité:

E06.41

Referida por:

E1186-22, E1998-11R18, E1258-23, D7297-21, E0741-24, E1554_E1554M-13R23, D6670-18, E0631-15R24, E1827-22, E2813-24, E3158-24, D8445-22A

Volúmen:

04.11

Número ICS:

91.140.30 (Ventilation and air-conditioning systems)

Palabras clave:

air leakage; air-leakage rates; blower-door test; building envelope; depressurization; energy conservation; fan pressurization testing; infiltration; pressurization; ventilation;