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An Isothermal Furnace Liner is a unique heat pipe that distributes heat within a furnace to wherever it is required to provide a stable, uniform temperature zone for a variety of applications mentioned above. When a single uniform temperature zone is required, the IFL can provide this zone with a single heater and controller. Temperature adjustment is a simple one step process and frequent profile measurements are not necessary.

In most applications, temperature uniformity is within 0.1°C over the liner length. Energy can be saved and productivity increased because usable reaction zone length in a given furnace becomes larger than the active heater length. Two or more liners may be used in series to create multiple, individually controlled zones for special effects such as step changes in temperature profile.

Applications:

  • Temperature Calibration
  • Black Body Radiators
  • Isothermal Processing of Materials
  • Vapor Deposition
  • Diffusion
  • Annealing
  • Chemical Reaction
  • Vapor Pressure Measurement



Batch processing of IFLs

Thousands of IFLs are currently in use in many critically controlled processes. Standard IFLs for operation from -40°C to 1,100°C are available in a range of sizes to fit conventional furnace bores for horizontal or vertical application.

Benefits:

  • Flat temperature profile (isothermal)
  • Simplified Temperature Control
  • Rapid Temperature Recovery
  • Increased Productivity
  • Energy Savings

Custom Designs and Options:

  1. Flanged Ends
  2. Extended Inner Pipe
  3. IFL with Support Rods
  4. IFL with Thermo Well (external, internal or within the heat pipe)
  5. Vacuum Retort
  6. Hemispherical Dome End
  7. Small Diameter Cavity
  8. Calibration Wells

ACT introduced a new line of Ultra High Temperature Isothermal Furnace Liner (UHT-IFL) products in September 2004.



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