Plenum system


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plenum system

[′plen·əm ‚sis·təm]
(mechanical engineering)
A heating or air conditioning system in which air is forced through a plenum chamber for distribution to ducts.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

Plenum system

A method of heating or air conditioning whereby the air forced into the building is at a pressure slightly above atmospheric.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
Figure 1 shows an electrical circuit analog of airflow in a plenum system with one CRAC, one 25% tile, and one 56% tile.
We also realized the tremendous possibilities with the charged plenum system; it would give everybody local control over their air, as well as the ability to move [offices] around."
Once the preferred wire distribution system (with a 30 percent hold in the market at one time, according to sources), cellular floors have lost ground in the past eight years -- as have access floors -- to other distribution systems: namely poke-throughs in a ceiling plenum system.
It features simple programmability, two-arm spray articulation, high-precision photo diodes to minimize overspray, and patented coatings recovery and Airsphere plenum systems. Available with wet or dry filtration, applications include wood, composites, plastics and glass.
The approach meets an important need since the plane wave cutoff frequency is quite low for duct and plenum systems. For instance, the cutoff frequency for a 0.61 m X 0.61 m (2 ft X 2 ft) square duct is only 280 Hz.
Further work should entail validation of the approach for more complicated duct and plenum systems. For example, multiple inlet and outlet ducts, and duct splits can be easily simulated.
* Ultra clean air delivery units, air handling units, modular barrier wall systems, and fan powered plenum systems from SBB.
Heat transfer patterns in open plenum systems differ from those of ducted systems.