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Ambient Air Heat Exchangers



  • filling stations for industrial gases up to 500 bar
  • high-pressure process supplies up to 800 bar


  • supply at low to medium pressure (10 to 100 bar) with high throughput
  • supply of ultra-high purity gas

Design Features

  • small foot print
  • fin tube registers mounted on a galvanised steel frame form a box-shaped
    tower with four „finned“ side walls that is open at the top and at the bottom,
    facilitating stable convection on the inside that is mostly unaffected by wind
  • the cooling registers consist of stainless steel pipes inside welded
    aluminium fin sections that feature large surface areas

Performance Features

  • performance is largely unaffected by the elements
  • steady performance during continuous operation
  • permits outlet temperature to be adjusted in hot weather conditions

Technical Data

media all industrial gases with a low boiling point
heat carrier ambient air
inlet temperature -269°C to -25°C
outlet temperature 0 to 30°C below ambient temperature
max. operating
CONVEX ND 100 bar
CONVEX HD 350 / 450 bar
CONVEX HHD 800 bar
capacity up to 1500 Nm3/h (N2) depending on model
connections metal-to-metal threaded connections
(others available upon request)
materials Pressurised parts:1.4541, 1.4571 / 2.4360
Frame: S235JR hot-dip galvanised / 1.4301
Sections: AlMgSi0.5