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12 March 1982 Use Of Infrared Absorbing Gas In Illustrating Diffuser Air Flow Patterns
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An infrared absorbing tracer gas technique using nitrous oxide has been developed by the Architectural Sciences Division to illustrate patterns of air flow from air-conditioning supply air diffusers. Air flow patterns are recorded in real time on videotape through the use of infrared cameras and an IR opaque gas. By identifying faulty air circulation, the quality of the interior environment may be improved. The approach was first recognized by Public Works Canada in 1978 as having great potential as another diagnostic technique for improving Canadian building performance. The tracer gas technique comes as an extension of the developmental work in thermographic diagnosis of enclosure deficiencies done by Public Works under the direction of Peter A.D. Mill. 1,2,3
© (1982) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
R.O. C. Davidge "Use Of Infrared Absorbing Gas In Illustrating Diffuser Air Flow Patterns", Proc. SPIE 0313, Thermal Infrared Sensing Applied to Energy Conservation in Building Envelopes, (12 March 1982);

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