The difference between infrared heating lamp and ordinary heating lampHeating principleInfrared heating lamp: mainly heats by emitting infrared rays. Infrared rays are a kind of electromagnetic wave with a wavelength range of about 0.76-1000μm. When infrared rays are irradiated on the surface of an object, the molecules of the object absorb the energy of infrared rays and resonate, thereby intensifying the molecular movement and increasing the temperature. This heating method is a kind of radiation heat transfer, which does not need to transfer heat through a medium, and can directly transfer heat to the heated object, and the heating efficiency is relatively high.
Ordinary heating lamp: usually uses electric current to pass through a resistance wire to generate heat, and then transfers heat to the surrounding environment through thermal convection and thermal radiation. For example, the common tungsten filament bulb, when the current passes through the tungsten filament, the tungsten filament heats up and emits light, part of the heat is dissipated in the form of radiation, and part of the heat is transferred through the convection of the surrounding air. This heating method is relatively complicated in heat transfer process, and the heat loss may be relatively large.
