Mandik FDMQ 120, Technical Documentation Manual, Page: 50 / 61

Fire damper - FDMQ 120 Page 50 Version 2023-03-07
TPM 162/22
II. TECHNICAL DATA
Pressure loss
Pressure loss calculation
Determination of pressure loss by using diagram ρ = 1,2 kg/m
3
Δp = ξ · ρ ·
w 2
2
Δp [Pa] presure loss
w [m/s] air flow speed in nominal damper section
ρ [kg/m
3
] air density
ξ [-] coefficient of local pressure loss for the nominal damper section → see page 51