PVZ 700x400

Air curtain selection procedure

• Determine the required air curtain orientation (e.g., vertical).
• Determine the required heating type (W - water type, E - electrical type, N - no heating)
• The nomographic chart ¹ shows the effective reach distance of the curtain (1) (e.g., 3.5 m; for vertical orientation that value is equal to the door opening width). 
• For the outlet air stream speed from the curtain draw a perpendicular line down to the nomographic chart ² (e.g., 13.9 m/s).
• Using the nomographic chart ³ determine the outlet slit of the air curtain (3) (e.g., 2.5 m; for vertical orientation that is equal to the height of the door opening). 
• The nomographic chart ⁴ shows the minimum required air capacity (lines 4 and 5, e.g., 4400 m³/h). 
• The intersection of curves ⁵ and ⁶ lies at one of the colour fields of the design  chart ⁵. The field of the point location detrmines the standard size of the air curtain (e.g., 800х500).
• Projection of curve along the parable ⁷ up to the point of intersection with the curve that limits the colour field from above, determines the operating point of the air curtain. The air capacity 4800 m³/h which is somewhat above the minimum required air capacity refers to the effective operating point.