Ventiflex calculator

Protan Tunnel Ventilation Calculator

Med Ventiflex calculator kan du enkelt avgjøre hvilken størrelse du trenger på ventilasjonssystemet, inkludert viftestørrelse og lufttrykk. 

We provide you with a tool to make your working day more efficient.

Ventiflex Tunnelcalc is a easy tool, to determine the recommended duct-diameter, with additional information of approximately fan-size and working air pressure.

This calculator is based on SIA recommendations, and the latest European norms, for tunnel ventilation.

Basically, there are three key-figures necessary to operate this calculator:

(To be entered into the light green fields)

-       The tunnel cross-section
-       The tunnel length ( duct-length )
-       SIA Class ( S-Class for TBM or A-Class for D&B )

Other figures will automatically appear, based on these three figures, and indicate recommended duct diameter.