Supply/extract air volumes and input powers

Figure 1. Supply and extract air volumes

Supply and extract air volumes - description of the diagram

Continuous line (—)
Extract air
Broken line (- -)
Supply air
SFP = Input power (total) (W) Air flow specified in the ventilation plan (max.) (l/s)

SFP rate (Specific Fan Power) recommended value <1.8 (kW/m3/s). When a lower total pressure is used, also the SFP of the speed is lowered.

Figure 2. Fan input power