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Questionnaire

Mist eliminator at the air intake

An air intake is not a weather louvre: different tasks and different tests

Droplet separation principle: flow through vanes, droplets to the drainDiagram: a humid stream passes left-to-right through a vane pack; droplets deposit at channel bends and drain into a pan with a separate outlet; droplet-free air leaves on the right.Duct / casingHumid stream, m/svanesDroplet-free streamGravity flow to the pan — separate outletair · droplets: deposit → drain
Air intake with a mist eliminator against spray/mist, and an outdoor weather louvre — not equivalent

Schematic diagram, not an installation drawing.

At the air intake, a mist eliminator protects the system from spray and droplet mist coming from outside (for example, from neighboring cooling towers). A weather louvre is a different product with different geometry and tests (the scope of EN 13030): their roles are not equivalent and do not replace each other automatically.

Selection inputs

  • the intake flow rate and section;
  • sources of spray/mist nearby (distance, wind);
  • precipitation protection requirements separately — they apply to the louvre;
  • corrosion resistance of the materials — outdoor installation.

Design options

Vane or mesh pads in an outdoor execution; the material follows the corrosive medium. The designer decides how they relate to rain protection; weather louvre tests are not automatically credited to the mist eliminator.