ventilation units, non-ducted
[EN 13141-4:2021, 3.14]:ventilation unit intended to be used without external ductwork (Cat. A)
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ventilation zone
[ASHRAE 62.1]: any indoor area that requires ventilation and comprises one or more spaces with the same occupancy category (see Table 6.2.2.1), occupant density, zone air distribution effectiveness (see Section 6.2.2.2), and design zone primary airflow (see Section 6.2.5.1) per … Continue reading →
ventilation, balanced
[EN 12792:2003, 51]:ventilation installation where the supply air flow and the exhaust air flow rates comply with the design values.
Continue reading →ventilation, cross
[EN 16798-7:2017, 3.10]:natural ventilation in which the air flow mainly results from wind pressure effects on the building facades and where stack effects in the building are of less importance. [SOURCE: EN 12792:2003, definition 94].
Continue reading →ventilation, extract
[AIVC, Air infiltration and ventilation glossary, 1992]:a mechanical ventilation system in which air is extracted from a space or spaces, so creating an internal negative pressure. Supply air is drawn through adventitious or intentional openings. Such a system allows heat … Continue reading →