return grille

return grille

return grille
A grille, 2 through which return air is extracted; usually not provided with an adjustment for volume of airflow.
References in periodicals archive ?
15 supply and return grille; 10 jet nozzles; about 47 poppet valves; 3.
As shown in Figure 6 relocation of the return grille over the patient's head provides path of least resistance for the particles to exit from the room.
In the base case analysis, both the supply diffusers and the return grille are located at the ceiling with the linear supply diffuser placed directly above the patient's head (Figure 1a).
Noise can travel through open return air grilles in the ceiling, through a common plenum above the ceiling and back down, or through the open air return grille in the adjacent room.
Contaminants and heat in the room are diluted by supply air and then extracted through the return grille. Stratified ventilation systems, such as underfloor air distribution (UFAD), are becoming popular in modern buildings (Bauman 2003).
bypassed or the air handier is pulling its air from somewhere other than the return grille.
The instruction card gives clear directions on how to hook up the components to measure duct air velocity, supply grille velocity, return grille velocity static pressure, and, if needed, furnace draft and air filter test.
If an air-handling unit is located in a room adjacent to the corridor, for example, it is unacceptable to place a return grille serving that air-handling unit directly into the corridor wall, and use transfer openings from each office into the corridor proper.
These capturing elements are of varying sizes that rarely match the dimensions of a return grille. If the capture element fully covers the grille and has a good seal around it then we can assume that it captures all of the desired airflow.
A branch may be a major junction or a take-off for a terminal diffuser or return grille.)
supply and return grille 625 x 75 mm; 2 pcs slat ventilation hood dn 315; 4 pcs slat-ventilation hood dn 500; 2 st.
[CO.sub.2] concentrations were measured at two heights, breathing height of seated and standing person (1.1 m (3.6 ft) and 1.7 m (5.6 ft)), diffuser (floor level) and return grille (ceiling level), respectively.