7.1.1. Consumption of nozzles



The consumption of compressed air by nozzles of different shapes can vary greatly and depends on various factors :
    • Diameter of the nozzle.
      The larger the nozzle, the greater the consumption.
    • Operating pressure of nozzle.
      The higher the operating pressure, the greater the consumption.
    • Shape of nozzle.
      A simple, cylindrical through-hole consumes much less compressed air than a conical or Laval-nozzle (expansion nozzle).
    • Surface quality of aperture .
      If the quality of the aperture is very good (surface very smooth, no grooves and unevenness), more compressed air can flow through.
    • Spraying or blowing.
      The consumption of compressed air rises if the air is being used as a medium for paint, sand, or the like.