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 ?
com)-- Companies across the process heating marketplace are seeking out guidance on their heating lamp requirements as they work to capitalize on infrared heating processes.
Tenders are invited for Supply of Top Loading Infrared Heating Furnace With The Following Technical Features Max Temperature : 1100 C Power Consumption : Approx 1.
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.
Infrared heating technology helps to join the parts securely together without creating particles in the insides of the tubes.
According to results from volunteers who tested the treated almonds, infrared heating didn't detectably alter the mild taste, smooth texture, attractive appearance or other characteristics.
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.
The machine has 60 zones of infrared heating, in-mold cutting, servo-driven plug assist, and a robotic handling system.
SolarFlex is a new patent pending far infrared heating mat that enables anyone, regardless of physical conditioning or age, to simply lie down and allow the deep penetrating heat to do the work.
Infrared heating for food and agricultural processing.
It features independently controlled convection and infrared heating modules, a four-corner pneumatic lift, removable drip pans, and large area filters and stainless steel filter frames.
Features of the Precision IRT are said to include independently controlled convection and infrared heating modules; a four-corner pneumatic lift for safe, easy access; removable drip pans for fast and easy maintenance; and large area filters and stainless steel filter frames for long life and impromptu replacement.
The direct infrared heating of the Bruest HotCat design delivers heat energy with maximum efficiency, keeping operation costs low.