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plenum Definition

ple·num (plē′nəm, plen′əm)

noun pl. -·nums or -·na-nə

  1. space filled with matter
  2. fullness
  3. a full or general assembly, as of all members of a legislative body
    1. an enclosed volume of gas under greater pressure than that surrounding the container
    2. the state of this

Etymology: ModL < L, neut. of plenus, full

plenum Telecom Definition
An air-handling space such as those used for air conditioning and heating systems. Plenums commonly are between walls, under raised floor structures, and above drop (suspended) ceilings. While plenums are convenient places to run cables, they also are conducive to the spreading of fires within buildings, as they are primarily intended to support air flow. See also plenum cable.
plenum Usage Examples

Preposition: with

  • injection: Fuel System: Tuned runner aluminum plenum with multi port injection.

Converse of object

  • raise: That links into the idea of raised floor plenums for fresh air distribution.
  • form: The dish will be 3.5m deep at its thickest point forming a plenum for smoke extract from the atrium below.

Adjective modifier

  • standard: Rover K series 1600cc engines - provided induction is via the standard production plenum.
  • 4th: The 4th Plenum drew attention to the Party's call to put the full weight of the collective behind all the work.
  • enlarged: In the autumn the enlarged plenum of the ICL declared not an independent party but an instrument for creating them.
  • 3rd: The deliberations of the 3rd Plenum took place in the context of developments nationally and internationally which put great demands on the Party.
  • extended: Only Harber and Kirby joined the extended plenum of the following spring.

Modifies a noun

  • chamber: Upon exiting the LP compressor around 58 % percent of the airflow enters a plenum chamber.
  • vaporizer: It is safer to use conventional plenum vaporizers mounted on the anesthetic machine outside the circle.
  • system: See air change, air washer, modulated control plenum system, unit air conditioner, and BS 5643.
  • area: There is another advantage to be gained from keeping the plenum area of the bulkhead clear.

Noun used with modifier

  • air: Low air leakage plenum floors for underfloor air delivery are standard.
  • production: Rover K series 1600cc engines - provided induction is via the standard production plenum.
  • supply: This raked structure consists of concrete treads and timber infill risers and is used as a supply air plenum.
  • return: Spent air is drawn from the space back to the zone unit via return air grilles located over the return plenum.
  • floor: That links into the idea of raised floor plenums for fresh air distribution.
  • throttle: In 2002, the car has been further modified with a John Eales triple throttle body plenum.