ceiling plenum

ceiling plenum

In an air-conditioning system, the space between a hung ceiling and the underside of a floor slab above, where this space is used as a plenum for return air.
References in periodicals archive ?
It can be constructed as a hot aisle containment module when a ceiling return plenum is present, or it can be configured as a cold aisle if cooling is done through a raised floor, there is limited ceiling height, or when there is no ceiling plenum available.
Includes: complete demolition and rebuild of the existing interior space; install new partitions and finishes within the shelled space; new mechanical, electrical and plumbing services to the spaces; access the ceiling plenum in the occupied fourth floor below; exterior work including roof, mechanical and plumbing.
Double ceiling allows energy-efficient recirculation to ceiling plenum.
The worst case scenario is that they'll get up into the ceiling plenum and spot some asbestos," Vogel says.
Clean air from the ceiling plenum is distributed evenly across the entire work area pushing any breathable dust generated downward and away from the operator's breathing zone.
The speed is varied so that they pull out exactly the correct amount of air from the enclosure and send it back to the air conditioner return via a ceiling plenum.
2 m] above the floor near the center of the room) in the return grille, which should be similar to the breathing zone if the room is well-mixed, and in the secondary air inlet, where the FPB draws air from the ceiling plenum.
The local unit may be installed in a ceiling plenum, closet or roof.
The scope of the construction will include demolition of the existing ceiling and lighting as well as most of the ductwork and systems in the existing ceiling plenum.
Several HVAC options available, including modular units that circulate air to a ceiling plenum chamber or to ductwork that feed individual fan/filter units (see page 22)
Service loops are located within the ceiling plenum of the labs with vertical services chases on a module aligned with the column grid to maximize clear lines of sight in the open lab area.