How can I calculate the necessary pressure drop for the ventilator? I feel like an idiot not being able to do it. All the values are known (flow rates, zeta values, diameters....) :
Coolers and Fan Products
ventilatore - Elettrodomestici In vendita a Bergamo
Ventilatori - Radna odjeća, radne cipele, radne hlače, aku alat po akcijskim cijenama - MajstorAlata
HITACHI Mokai RAK-25RPE/RAC-25WPE klima uređaj - KLIMEONLINE