Air Recirculation

Pollution control inside out.

A pro­tec­tive ven­ti­la­ti­on sys­tem re­lia­bly gua­ran­tees that only fil­te­red air can get into the ope­ra­tor’s ca­bin.

With an ad­ded air cir­cu­la­ti­on sys­tem, SEKA ta­kes even one more step towards cle­an air. It is able to re­mo­ve even tho­se par­ti­cles which might get into the ca­bin whi­le the door is open for the ope­ra­tor to en­ter or lea­ve his work­place. It also ef­fec­tive­ly prevents germs, spo­res and fun­gi from mul­ti­ply­ing.


Pollution control inside out

A SEKA pro­tec­tive ven­ti­la­ti­on sys­tem con­ti­nuous­ly pus­hes fil­te­red air into the in­si­de of the ope­ra­tor’s ca­bin. This cau­ses a con­trol­led over­pres­su­re which ef­fec­tive­ly prevents con­ta­mi­na­ted outs­ide air from en­te­ring into the in­si­de of the ca­bin. Yet, du­ring real-life ope­ra­ting con­di­ti­ons it can­not be preven­ted that a small amount of con­ta­mi­na­ted air still gets into the ca­bin – for ex­amp­le whi­le the ope­ra­tor en­ters or lea­ves the ca­bin, but also in the form of dirt at­ta­ched to his shoes or clo­thing.

In cour­se of time this can even lead to an in­crea­sed le­vel of con­ta­mi­na­ti­on. Germs, spo­res and fun­gi tend to mul­ti­ply ra­pidly once they had a chan­ce to get in­si­de the ca­bin. This ef­fect can even be ac­ce­le­ra­ted if moi­s­tu­re was able to pe­ne­tra­te into the ca­bin trough leaks.

Between comfort and efficiency

In or­der to get full con­trol of any air­bor­ne pol­lu­ti­on in­si­de the ope­ra­tor’s ca­bin, SEKA pro­tec­tive ven­ti­la­ti­on sys­tems come with an air cir­cu­la­ti­on sys­tem as stan­dard fea­ture. This sys­tem con­ti­nuous­ly re­cir­cu­la­tes and fil­ters the air in­si­de the ca­bin. The ef­fi­ci­en­cy of such a sys­tem in­crea­ses with the fre­quen­cy of the air cir­cu­la­ti­on of the exis­ting air vo­lu­me.

But a high re­cir­cu­la­ti­on fre­quen­cy also co­mes with an in­crea­sed noi­se le­vel. This will be es­pe­cial­ly evi­dent in a pres­su­ri­zed ca­bin, sin­ce pres­su­riza­t­i­on also fil­ters out a gre­at por­ti­on of outs­ide noi­ses whi­le in­si­de noi­ses be­co­me even more evi­dent.

SEKA sol­ves this con­flic­ting si­tua­ti­on by using an air cir­cu­la­ti­on sys­tem with es­pe­cial­ly lar­ge fil­ters. The­se fil­ters re­qui­re a con­sider­ab­ly lo­wer fan ro­ta­ti­on, the­r­e­by re­du­cing noi­se emis­si­ons wi­thout li­mit­ing ef­fi­ci­en­cy.

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