Infrared Heating


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infrared heating

[¦in·frə¦red ′hēd·iŋ]
(engineering)
Heating by means of infrared radiation.

Infrared Heating

 

the heating of materials by electromagnetic radiation having a wavelength of 1.3−4.0 microns (infrared radiation). It is based on the ability of materials to absorb a certain part of the spectrum of such radiation. Deep or superficial heating of the irradiated body, as well as local drying without heating the entire object, can be accomplished with appropriate selection of the emission spectrum of infrared radiation. Infrared heating was first used on an industrial scale in the 1930’s in the United States at Ford plants to bake enamel onto automobile bodies.

Infrared radiators, which consist of the energy source itself (a heated body) and a reflector, are the source of energy for infrared heating. Depending on the degree to which the sources are heated, they are arbitrarily divided into low-temperature sources, which are heated to a temperature of less than 700°C; medium-temperature sources, from 700° to 1500°C; and high-temperature sources, above 1500°C. Tubular electrical heaters, reflector drying lamps, and electrical heaters (which consist of a tungsten filament housed in a hermetically sealed quartz pipe filled with inert gas and iodine vapor) are used as heat sources. Infrared heating units are chambers, tunnels, or domes whose size and shape correspond to the size and shape of the items being processed. The radiators are attached to the inside of the unit; the distance between them and the surface of the objects being heated is usually 15–45 cm. In industry infrared heating is used extensively for heating to comparatively low temperatures with low heat fluxes (for drying dyes and lacquers, vegetables, and fruits; for heating thermoplastic materials prior to molding; and for vulcanizing rubber).

References in periodicals archive ?
The company specialises in the customised design, manufacture and installation of gas fuelled flameless catalytic infrared heating and curing systems for a wide range of industries.
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The company, headquartered in West Cork, Ireland, designs and manufactures infrared heating components and systems for industrial and commercial use.
Heating Green sells infrared heating systems for homes and businesses.
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Infrared heating max 20 beakers capacity 100, 150 or 200cc, or 16 cap.
In experiments with more than 6,000 field-ripened Roma-style (sometimes called "plum") tomatoes, USDA scientist and ASABE member Zhongli Pan and his industry and university colleagues have shown that using infrared heating to simplify removal of the tomatoes' tight-fitting peels may offer advantages over other peeling technologies.
It also has an infrared heating system with 60 zones and an electronic regeneration system that reduces energy use, resulting in savings of about $9000/yr.
EXOGLO Jacket and & Power Pack & Charger (PS225) With three lightweight, infrared heating panels across the kidney and chest, the EXOGLO Jacket is also waterproof, windproof, breathable and comes with added lycra for four-way stretch, a rechargeable power pack, charger and remote control.
Brandl are collaborating in leading-edge studies that explore the use of a still-evolving technology, infrared heating, to help make sure almonds remain safe to eat.
Infrared heating for food and agricultural processing.