Axial fans

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Effects of overlapping dimensionThe axial overlap between the inlet nozzle and impeller cover plateinfluences the air performance and efficiency of a centrifugal fan.Curve[Pa]1[%]X123x / D = 0.6 %x / D = 0 %x / D = -0.8 %3312200[m³/h]Effects of installation spaceWhen mounting our product in a rectangular box, air performancemight be reduced.0,960,971,00DCurveB0,990,98d hBH0,5xDDH= Hydraulic diameterFormula: d h = 2 x B x H / (B + H)= Width of box= Height of boxD = Outer diameter of the fanDCorrection factor for air flow0,92 0,93 0,94 0,951,4 1,6 1,8 2,0 2,2 2,4 2,6 2,8Hydraulic diameter d h/D402
AC axialA seriesQ-motorESMEC-SYSTEMSTechnologyAccessoriesEC axialS seriesEC axial <strong>fans</strong>AC axialK seriesAC axialS seriesAC axial <strong>fans</strong>GeneralinformationAir flow measurement for inlet nozzleswith pressure-measuring pointThe differential pressure approach compares the static pressure beforethe inlet nozzle with the static pressure inside the inlet nozzle.D0,5xDAir flow can be calculated on the basis of the differential pressure(difference in pressure of the static pressures) in keeping with thefollowing equation:V = k . ∆p W V in [m 3 /h] and ∆p W in [Pa]If constant air flow control is used, then the nozzle pressure has to bekept constant: ∆p W = V 2 :k 2k takes into account the specific nozzle characteristics.One or four pressure measuring points are spaced along thecircumference of the inlet nozzle. Connection on the customer sideis accomplished via a premounted T tube connector. This tube connectoris suited for pneumatic hoses with an internal diameter of 4 mm.403Contacts
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Axial fans

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