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Air Heaters
Band/Cartridge Heaters
Tubular Heaters
Radiant Heaters
Other Heaters

Heaters

General Description of:
   

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Air Heaters: Air, like any fluid, absorbs heat as it passes over an electric air heater element.  Almost any type of heater can be used to heat air.  The type of heater used depends on the efficiency required, the air temperature needed, the nature and amount of the gas being heated, and the operating environment.  

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Band and Cartridge and Strip Heaters: Band Heaters are used primarily by the plasrics and rubber industries.  Band heaters excel in transferring heat from the element to a cylindrical surface.  Most common uses are extrusion barrels for extruders and molders.  Other uses include heating small autoclaves, press posts, and pipes.  Band heaters can be constructed in different ways depending on the operating environment and electrical requirements.

Cartridge Heaters are one of the most widely used types of electric heater.  Cartridge heaters can be made in different lengths and diameters.  Different types of sheath construction can adapt these heaters to different operating environments.  Cartridge heaters are used to heat molds and plattens, as immersion heaters, and in heat sealing and stamping machines.  Cartridge heaters are useful in any application where a cylindrical hole can be drilled. 

Strip Heaters are basically straight band heaters.  Different types of strip heaters can be used in different applications.  Some of the more common applications include plattens, heating flat surfaces, and used as small duct heaters (when fitted with fins and run at relatively low temperature).

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Tubular Heaters:  Commonly known as Calrods®; they are the most versatile electric heater for most industrial applications.  Tubular elements can be constructed in different diameters, different lengths, bent into different shapes, and made from different materials.  Tubular elements are used as infrared heaters, immersion heaters, contact heaters, and convection heaters.  These elements are found in ovens, tanks, air ducts, molds, infrared fixtures, and cast heaters.

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Radiant Heaters:  Also known as Infrared heaters because they heat objects by transmitting infrared energy.  Radiant heaters come in different styles and materials.  Quartz faced panels are common in thermoforming.  Tubular heaters can be used when applying heat to a particular area.  T3 and Quartz lamps can be used to generate short and medium wave infrared heat.  Ceramic heaters are used to generate longer wave energy.

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Other Heaters: Other types of electric heaters include: heated MI cable; heat tape, silicone blanket and tape heaters; open coil heaters; tungsten; and silicone blanket heaters and glass mesh heaters.

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