Biddle IndAC Manual de usuario descargar pdf (Pagina 3)

Airflow Technology

When a door is open,the difference between the outside and inside temperature leads

to an exchange of air, resulting in cold air entering and warm heated air flowing out.An

air curtain above or next to the open door provides separation of the two climates.

Whilst developing the Invisidor IndAC,Biddle has researched the outlet discharge pattern.

The result is the Double Rectifier.

Patented Double Rectifier

With industrial doorways the air volumes required to deal with climate separation are

high. The Double Rectifier, which minimises turbulence in the discharge air stream

and surrounding air, ensures that the air movement generated by the fans is directed

downward in a deeply penetrating laminar air stream, reducing energy consumption

and increasing comfort levels all year round (see figure 1 & 2).

The pressure chamber behind the rectifier evenly distributes the air stream across the

whole width of the unit, ensuring air does not bypass at the ends of the unit.

Fan Technology – Improved Fan Design

Radial backward curved fans are used in conjunction with the Double Rectifier to provi-

de an evenly distributed air stream pattern across the whole unit width,without dead

spots associated with more commonly used individual axial, or centrifugal fans.

Fig. 1

Industrial air curtain without rectifier

Fig. 2

IndAC with Double Rectifier

Fig. 3

Industrial air curtain without rectifier

Fig. 4

IndAC with Double Rectifier and backward

curved fans

Patented Double Rectifier

Biddle-IndAC-UK-367797 26-02-2007 8:45AM Pagina 3

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Biddle IndAC Manual de usuario Pagina 3