Infrared irradiation is one of the best methods of transmitting heat. Heat is propagated by irradiation when thermal energy passes from a hot body to a cold one by means of electromagnetic or infrared waves.
Irradiated energy travels at the speed of light (3 x 10 cm/sec), acting in a similar way to light radiation. When infrared rays hit a body, they may be refracted, reflected, absorbed or diffused depending on the type of irradiated material, the quality of the surface and the radiation wave length. Radiation is absorbed to varying degrees, but it has been proved that wave lengths of between 2 and 4 microns (medium waves) have the highest penetration power as regards the vast majority of substances. Infra Rodon manufactures high performance infrared medium wave electric lamps and radiators for use in air irradiation, providing the simplest solutions to a whole range of infrared electrical heating problems
In infrared heating applications, establishing the correct power for optimum results requires more than mere mathematical calculations; the many variables involved – material types, colour, thickness, humidity, surface characteristics and so on – mean that the best results are obtained by carrying out small scale tests and gathering essential data (times, temperatures, etc.).
The discovery of infrared rays
The discovery of infrared radiation is ascribed to William Herschel, the astronomer, in the early 19th century. Herschel published his results in 1800 before the UK Royal Society. Herschel used a prism to refract light from the sun and detected the infrared, beyond the red part of the spectrum, through an increase in the temperature recorded on a thermometer. He was surprised at the result and called them “Calorific Rays”. The term ‘Infrared’ did not appear until late in the 19th century.
Paints drying – Thermoforming – Post thermoforming – Plastic granules drying – Plastisol Fusion – Rolled plastic pre-heating – Polymerization of resins – Fabric drying – Paper drying- Glass pre-heating – Mirrors drying – Heat-narrowing – Labels drying – Sterilizations – Food heating – Barbecue – Inks drying – Working place heating- Cold protection.
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