Mandik FDMB, Техническая документация инструкция

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FDMB - Fire damper Page 38 Version 2022-12-20
TPM 164/22
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 39