An openness percentage is a production figure, not a flow figure. Two fabrics with the same openness can differ by a factor in pressure loss, depending on yarn thickness, weave and coating. For a CFD study only one thing counts: the measured resistance.

That is why all DataAirShield® fabric types have been tested to EN 13030 (ventilation for buildings: performance testing of louvres). The values below are the input for your consultant's flow calculation.

Pressure loss Δp = ζ · ½ ρ v². Cv ≈ 1/√ζ. Values to EN 13030, test reports on request. All fabric types: fire class M2 (NF P92-503) and B1 (DIN 4102-1).

Zoning per CFD zone

One fabric everywhere is rarely the optimum. With three fabric types the screen can be tuned per zone:

• DataAirShield04 where recirculation is strongest (downwind, close to the discharge).
• DataAirShield05 as the standard field.
• DataAirShield28 where cavity pressure is critical (windward, near the intakes).

Intake temperature drops where it matters, without any fan moving off its operating point. We supply the data; the project's CFD consultant defines the zoning. On request we can recommend a CFD specialist.

Colours and dimensions

White as standard; other colours on request. Roll width 3.20 m; larger panels are high-frequency welded with a seam as strong as the fabric. Every panel is made to size from the project's 3D model.

Need the test reports or the data sheet of the selected fabric type? Email [email protected].