Technically advancing your
traditional heaters or dryer with infrared heaters or infrared based dryers are
always has been great decision or making up to quality product requirements of
the market with lesser cost and time. It’s important to stop for while to
understand and give critical thinking over below points:
- What advantages will the Infrared heaters/dryers will bring along in my current process?
- Will it help in reducing the total processing cycle time?
- What will type of materials, which get processed?
- What is the physical, physiochemical property, absorptivity, Size, Microstructure and Optical Properties of material?
- Can the existing heating/drying system be used?
- What will be the space requirement for the new IR installation?
There could be thousands of more
questions or concern points that arise can arise in your mind when you think of
such changes, hence it’s very important to take help or consult experts or
heating consultant or search for heating manufacturer, who is expertise in
designing and building infrared based heating solution (partnering with company
such as KERONE can
help you with best suited IR heater/dryer for process requirements).
First and most important aspect
in choosing right infrared based heating or drying solution is understand the
material that to will be processed inside the Infrared heater/Infrared dryer, as
every material absorbs infrared (IR) differently. The generation of heat on
material takes place through the absorption and scattering of radiation. When
an electromagnetic wave passes through a medium, it undergoes diffraction from
the surface of a particle whose refractive index differs from that of the
medium. This phenomenon is known as scattering or weakening. The scattering and
absorption depends on the size form of particles, microstructure and optical
properties of material under processing and also on the wavelength of the
radiation of the Infrared emitter. On the other hand the radiation absorption
in material depends mainly on the water content, thickness, and physicochemical
nature of the material and wavelength of the radiation.
Hence choosing the correct wavelength
for the Infrared heaters is very critical. The infrared emitter which generates
or radiates the desired wavelength becomes very important part of the infrared
heating/drying systems. Choosing
correct emitter ensures the most effective heat work that will yield reduced
cycle time i.e. achieve the desired temperature very quickly. To understand the
basic IR wavelength requirements it’s important to understand the Planck’s Law,
the Max Planck reported that “the spectral distribution of radiation from a
blackbody source that emits 100% IR radiation at a given single temperature”.
According to Planck the higher the object temperature the greater the amount of
IR energy will be produced.
To summarize, the emitted
infrared frequencies and the absorption frequency of material under process
should match to allow most efficient heat transfer. Hence it’s always advisable
to consult experts such as KERONE (a 100% quality oriented and technologically
advanced Indian company #makeinindia) before making choice.
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