We Need To Know More About Infrared Emissivity

Stephen J. Marshall

doi:10.1117/12.932890

12 March 1982 We Need To Know More About Infrared Emissivity

Stephen J. Marshall

Proceedings Volume 0313, Thermal Infrared Sensing Applied to Energy Conservation in Building Envelopes; (1982) https://doi.org/10.1117/12.932890
Event: Thermal Infrared Sensing Applied to Energy Conservation in Building Envelopes, 1981, Ottawa, Canada

Abstract

Emissivity values were measured at 0°C for four modern building materials in the 2.5-5.6 μm region of the infrared spectrum. The materials consisted of various visible colors and textures of roofing shingles, fluoropolymer coated steel roofing, aluminum siding, and solid vinyl siding. The results varied significantly over the range of colors selected. Values for thin coatings on metal substrates were lower than expected for the coatings alone. The effects of temperature, texture and wavelength were not clear. Emissivity values for common building materials were compiled from the literature and are included for comparison.

Citation Download Citation

Stephen J. Marshall "We Need To Know More About Infrared Emissivity", Proc. SPIE 0313, Thermal Infrared Sensing Applied to Energy Conservation in Building Envelopes, (12 March 1982); https://doi.org/10.1117/12.932890

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