What distance is suitable for infrared heating

The heat transfer mode of infrared radiation is radiation heat transfer, where energy is transmitted by electromagnetic waves. When far-infrared rays are mapped onto heated objects, some of the rays are reflected back and some are penetrated before. When the wavelength of the emitted far-infrared radiation is the same as the absorption wavelength of the heated object, the heated object absorbs far-infrared radiation. At this time, the molecules and atoms inside the object undergo "resonance" - violent vibration and rotation occur, which raise the temperature of the object and reach the heating target. What distance is suitable for infrared heating? Let's take a brief look below:

Infrared radiation refers to the emission and transmission (dispersion) of electromagnetic waves with a spectrum between 0.7um and 80um. The emission and transmission are accompanied by obvious and directional energy dispersion, and energy transmission does not require the exchange of media, even in vacuum. Infrared radiation can be divided into short wave, medium wave, and long wave according to wavelength.

For thermal sensing materials (paper or thin sheets), the working interval should be greater than or equal to 50 mm. If the arrangement of the heaters is not close and the heated object is subjected to constant heating, the working interval should also be appropriately increased. If the distance between heaters is 2-3 cm, the working interval of about 20cm can achieve average heating.

The above is the distance for infrared heating, hoping to be helpful to you.