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Heating Vacuums
Heating a vacuum isn't possible. There is nothing to heat. When referring to "heating a vacuum," we mean heating an object located inside a vacuum. Regardless of the heater type, all vacuum heating is accomplished with radiant heating. Some heater types physically lend themselves more readily to an application than others. The application descriptions below will give you a general idea on how a particular heater type is applied for heating an object inside a vacuum.

Heater Type/Application Description
Cable

Coiled or sinuated, and mounted in a vacuum vessel for radiant heating.

Cartridge

Mounted in a vacuum vessel for radiant heating.

Cast-in

Constructed into a vacuum vessel so that the interior surface acts as a radiant heat source. Possible to produce zoned and distributed wattage on the interior surface.

Ceramic Fiber

Constructed to surround and heat the vacuum vessel so it re-radiates heat to the load.

Flexible

Applied to the exterior or interior surface of a vacuum pipe or vessel. Well suited for curved and irregular shaped objects. Note: Kapton® is the only flexible heater material recommended for use in the vacuum.

Multicell

Mounted in a vacuum vessel for radiant heating.

Radiant

Mounted in a vacuum vessel for radiant heating.

Strip

Mounted in a vacuum vessel for radiant heating.

Tubular

Mounted in a vacuum vessel for radiant heating.

Kapton® is a registered trademark of E.I. du Pont de Nemours & Company

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