air, ambient

[ASHRAE Standard 62.1]:the air surrounding a building; the source of outdoor air brought into a building.(see air, outdoor)

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air, exfiltration

[AIVC, Air infiltration and ventilation glossary, 1992]:the uncontrolled outward leakage of indoor air through cracks, interstices, and other unintentional openings of a building, caused by the pressure effects of the wind and/or stack effect. [ASHRAE Standard 62.1]:uncontrolled outward air leakage Continue reading →

air, exhaust

[AIVC, Air infiltration and ventilation glossary, 1992]:air removed from a space and not reused therein. [ASHRAE Standard 62.1]:air removed from a space and discharged to outside the building by means of mechanical or natural ventilation systems. [ASHRAE Standard 62.2]:air discharged Continue reading →

air, extract

[AIVC, Air infiltration and ventilation glossary, 1992]:Air that is removed from a building or space. A proportion is often used for recirculation and added to incoming air. Alternatively, it is all exhausted to the outdoors, sometimes via an air-to-air heat Continue reading →