Figure 1 shows an electrical circuit analog of airflow in a plenum system
with one CRAC, one 25% tile, and one 56% tile.
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
The approach meets an important need since the plane wave cutoff frequency is quite low for duct and plenum systems.
Further work should entail validation of the approach for more complicated duct and plenum systems.
Ultra clean air delivery units, air handling units, modular barrier wall systems, and fan powered plenum systems
Heat transfer patterns in open plenum systems
differ from those of ducted systems.