An infrared heater is a body with a higher temperature which transfers energy to a body with a lower temperature through electromagnetic radiation. Depending on the temperature of the emitting body, the wavelength of the peak of the infraredradiation ranges from 780 nm to 1 mm. No contact or medium between the two bodies is needed for the energy transfer. Infrared heaters can be operated in vacuum or atmosphere. One classification of infrared heaters is by the wavelength bands of infrared emission.

  • Short wave or near infrared for the range from 780 nm to 1400 nm, these emitters are also named bright because still some visible light is emitted
  • Medium infrared for the range between 1400 nm and 3000 nm/li>
  • Far infrared or dark emitters for everything above 3000 nm

IR heaters can satisfy a variety of heating requirements, including:
  • Extremely high temperatures, limited largely by the maximum temperature of the emitter
  • Fast response time, on the order of 1–2 seconds
  • Temperature gradients, especially on material webs with high heat input
  • Focused heated area relative to conductive and convective heating methods
  • Non-contact, thereby not disturbing the product as conductive or convective heating methods do
Thus, IR heaters are applied for many purposes including:

  • Heating systems
  • Curing of coatings
  • Plastic shrinking
  • Plastic heating prior to forming
  • Plastic welding
  • Glass & metal heat treating
  • Cooking
  • Warming suckling animals or captive animals in zoos or veterinary clinics
  • Hot Yoga fitness classes to mitigate respiratory issues posed by convection heating


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