Supply/extract air volumes and input powers


Continuous line (—)	Extract air
Broken line (- -)	Supply air

PK and TK are examples of pressure loss in the extract and supply air ducts.

SFP rate (Specific Fan Power) recommended value <1.8 (kW/m³/s).

SFP = \frac{Input power (total) (W)}{Air flow (max) ({dm}^{3} /s)}