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Radiant Emission Patterns of Ceramic Sealed Emitters
Infrared Heaters
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| Concentrated |
Uniform |
Wide
Area |
Ceramic emitters
are manufactured with three basic emitter faces: concave, flat, and convex.
These emitter face styles will result in the specific radiant emission patterns
as shown above. Note: Infrared radiation is emitted at right angles to the emission
surface.
Concentrated: The concave surface will emit a "concentrated"
radiant pattern which is highly effective when zone heating is desired as
well as radiant heating in general.
Uniform: The flat surface will produce a "uniform" pattern
for even heating at a close proximity between the emitter and the target
being heated.
Wide Area: The convex shape gives off a "wide area" pattern
which is desirable in comfort heating or other applications that require a
dispersed radiant emission pattern.
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The radiant emission grid can be used to
determine the proper ceramic emitter spacing when used in an
application such as an infrared panel. In order to achieve an even
heat pattern it is critical that the emitters are spaced so that
their radiant emission patterns overlap when reaching the target.
The more overlap that occurs, the more even the heat will be across
the face of the product being heated. The area of highest radiant
emission intensity for a single emitter is shown within the two dark
crossed lines on the grid. In order for element emissions to
overlap, the dashed line shows an intersection point at a distance
of 7" will occur if the emitters are placed a distance of 2" apart
from edge to edge. This same concept should be used to either
determine the distance to place the product if using an existing
panel, or placement of emitters if building a
panel to guarantee radiant emission
overlap. |
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