User Manual

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Siemens Building Technologies
Cerberus Division
01.2002
6.1.2 Unidirectional airflow
If the demand is for higher and the highest level of air cleanliness, we apply the principle of
unidirectional airflow, as it is called. In everyday language it is also known as laminar flow
although it is not quite physically correct. With this method, the contaminated air released in
the room is carried away by the shortest route and so rendered harmless.
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Legend:
1 Pre-treated outside air
2 Extract air
Fig. 14 Section through clean room with vertical flow, extracted via floor void
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Legend:
1 Pre-treated outside air
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3 Circulated air
Fig. 15 Section through clean room with vertical fresh air supply and lateral air extraction
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Legend:
1 Pre-treated outside air
2 Extract air
3 Circulated air
Fig. 16 Section through clean room with horizontal flow