Litzler Automation

Infrared and Radiant Heating

Infrared heating is the transfer of energy via electromagnetic radiation between a source and an object. Most materials absorb heat in the infrared wave band with useful wavelengths for industrial applications in the 3 to 8 micron ranges. Radiant heating (electric, gas, steam, oil) is often used for drying textiles, ceramics, paint (wood and metal), hardening powder paint and heat treatment of plastics. Radiant heat is most beneficial in rapid direct heating of a product.

Advantages

  • High rate of heat transfer
  • Provides quick start-up
  • Requires less space
  • No air movement
  • Undisturbed product or coating
  • Energy efficiency
  • Potentially lowest capital cost

Challenges

  • Temperature control
  • More difficult to control
  • Potential for overheat
  • Line of sight heat transfer
  • Precise layout of sources
  • Heating rate depends on product characteristics
  • Relies on thermal conductivity of the product to heat interior of thick products

Types of Infrared Ovens and Dryers

  • The Perfect Radiant® Oven is ideal for products which should not be directly exposed to radiant heaters for concern of ignition. When a web or fabric is heated to remove solvent, there is concern that solvent vapors may create a fire if they come in contact with the heating element. Perfect Radiant® incorporates special classified electric heaters which reduce or eliminate the possibility of solvent ignition. This oven is based on the long-wave infrared in the electromagnetic energy spectrum.
  • THERMODRY® dryers utilize a combination of infrared and convection to solve the challenges of drying and curing for industries such as textile or converting. Litzler follows a systematic approach to the design of drying and curing ovens. We thoroughly analyze your needs and constraints, and then design a flexible oven to operate efficiently and to effectively provide the optimum results you require.