source (in air pollution)

[ASHRAE Standard 62.2]:an indoor object, person, or activity from which indoor air contaminants are released, or a route of entry of contaminants from outdoors or sub-building soil. [ISO 16814:2008, 3.39]:persons, materials or processes (activities) from which indoor air contaminants are Continue reading →

specific flow (a)

[AIVC, Air infiltration and ventilation glossary, 1992]:defined as the total volumetric supply airflow rate per unit volume of the room. Specific flow is expressed by the equation; a= Q/V , where Q is the ventilation air flow rate (m3/s) and Continue reading →