Radiation in the Electromagnetic Spectrum is often
classified based on the wavelength (spatial period of the wave). Short
wavelength radiation comprises of highest energy and which can be very harmful such
as Gamma, X-rays and ultraviolet are some examples. Longer wavelength radiation
carries lower energy and is typically harmless some examples include RF, Microwaves
and infrared, hence these radiations find multiples application such as
Communication, Heating, Data transmission and many more.
Infrared (IR) is invisible radiant energy, electromagnetic
radiation with longer wavelengths than those of visible light, extending from
the nominal red edge of the visible spectrum at 700 nanometers (frequency 430
THz) to 1 mm (300 GHz), where as Microwaves are a form of electromagnetic
radiation with wavelengths ranging from as long as one meter to as short as one
millimeter, or equivalently, with frequencies between 300 MHz (0.3 GHz) and 300
GHz. Microwave are having larger wavelength as compare to Infrared radiation.
In Infrared heating system the infrared radiated waves are absorbed
water molecules and this absorption results in the heating of the material
under the process. On other hand in Microwave heating, microwave radiated waves
collides with the water molecules and results in the vibration of these
molecules hence this travel of molecules produces heat.
Infrared heater heats the material under process from the
outer surface to inner surface, as waves are absorbed by the material, whereas
microwave heats the substance from inner to outer surface of material due to
movement of molecules. Hence Infrared heaters are ideal replacement to the
conventional hot air generators.
IR heating can be produced using either gas fired or
electric powered infrared tubes. Microwave heating normally uses electricity to
activate the magnetron for production of microwave radiations.
In Microwave heating system heating of material depends upon
the presence of water molecules within the material, in Infrared heating system
heating of material completely depends on the absorption characteristic of
material.
Microwave heaters are
faster process of heating as compared Infrared (IR) heaters depending on the
material characteristic.
Heating/drying process that uses Microwave heater is highly
controllable as compared to those has Infrared heaters. Cooling time of
microwave is lesser as compared to Infrared heaters.
At KERONE, we manufacture both the type of heaters and help
clients to choose the best heater/dryer based on the process need, incase of
any information and query please contact us at info@kerone.com.
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