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Proceedings Paper

Infrared Thermal Sensing And How We Use It
Author(s): Herb Kaplan
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Paper Abstract

Everything above absolute zero radiates infrared energy in proportion to its surface temperature. When the objects are hot enough they radiate visibly and our eyes can see them glow. As they cool their radiation becomes invisible to the eye. We then can use infrared thermal sensors and scanners to measure their self-emitted infrared radiation and relate it to surface temperature. When the inside and outside of a structure are at different temperatures thermal energy flows through the walls and ceilings. The better the insulation, the less energy flow and the more is conserved. Changes in wall and ceiling surface temperatures are an indication of the thermal energy loss. This paper introduces the basic physical laws that make infrared thermal sensing instruments work, and explains how they are used to detect and measure heat loss in structures.

Paper Details

Date Published: 27 January 1981
PDF: 7 pages
Proc. SPIE 0254, Thermal Infrared Sensing Applied to Energy Conservation in Building Envelopes: Thermosense III, (27 January 1981); doi: 10.1117/12.959522
Show Author Affiliations
Herb Kaplan, Barnes Engineering Company (United States)


Published in SPIE Proceedings Vol. 0254:
Thermal Infrared Sensing Applied to Energy Conservation in Building Envelopes: Thermosense III
Robert P. Madding, Editor(s)

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