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velocity level

    0.01 sec.
velocity level [və′läs·əd·ē ‚lev·əl]
(acoustics)
A sound rating in decibels, equal to 20 times the logarithm to the base 10 of the ratio of the particle velocity of the sound to a specified reference particle velocity.


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The idea is to develop a forced-air system with inlet and outlet airflow located above head level in nonparallel walls, divided into two areas: the non-occupied upper area, which contains the airflow inlet and outlet, with high air velocity levels, used to make contaminant extraction easier, and the occupied lower area with low air velocity levels, used to ensure good thermal comfort, reduced local thermal discomfort, and acceptable air quality levels to the occupants.
The unit can operate at high velocity levels between -200 [degrees] F and 500 [degrees] F and may also be used for drying, warming or curing applications.
 
 
 
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