Improved heat transfer

The heat transfer can be increased at various degrees, depending on on the pattern used; compared to smooth-bore tubes

  • by a factor of 2 - 3 with a macro structure
    (at unchanged tube length without phase change)
  • by a factor of 4-5 with macro and micro structure
    (at unchanged tube length with phase change)

The infrared camera shows the clearly more effective heat transmission of the ERK tube application.

Tests show the heat transfer was improved by over 25 % at the same pressure loss.


red: smooth-bore tube
dark blue: ERK Tube-makro
light blue: ERK Tube-mikro + makro

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