volume flow rate
[EN 12792:2003, 395]:volume of matter, which passes a given surface, divided by time.
Continue reading →Glossary Terms
volume, space
[ASHRAE 62.1]:the total volume of an occupiable space enclosed by the building envelope, plus that of any spaces permanently open to the occupiable space, such as a ceiling attic used as a ceiling return plenum.
Continue reading →vortex
[AIVC, Air infiltration and ventilation glossary, 1992]:airflow with rotary, rather than translatory motion. It occurs in the wakes of buildings etc. and also in the presence of strong updraughts. A standing eddy or stationary vortex may be formed in the … Continue reading →
water loop
[EN 14511-1:2022, 3.62]:closed circuit of water maintained within a temperature range on which the units in cooling mode reject heat and the units in heating mode take heat.
Continue reading →water rejection efficiency ηw of a weather louvre
[EN 12792:2003, 396]:efficiency of a weather louvre at any air velocity under test conditions.
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