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Proceedings Paper

Interferometric measurement of temperature profiles inside a transparent solid
Author(s): Liliana Alvarez; Elvio Alanis; Graciela Romero; Carlos C. Martinez; G. Lesino
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Paper Abstract

Electronic speckle pattern interferometry technique (ESPI) was applied to the determination of temperature profiles inside a solid block made of a transparent material. The block is a component of a scaled-model intended to simulate a solar energy storage-collector wall (Trombe wall) and its adjacent room. In order to obtain the speckle correlation fringes, a Mach-Zehnder interferometer was used, in whose object arm the model was put. By means of an electrical heater a constant heat flux is supplied through one of the wall faces, maintaining the opposed face at a constant temperature, until a steady state is reached. The temperature profiles for several intermediate states are determined by measurements on the corresponding speckle correlation fringes. The experimental results are compared with the analytical solutions of the differential equation of heat conduction, with the appropriate initial and boundary conditions.

Paper Details

Date Published: 21 October 2004
PDF: 5 pages
Proc. SPIE 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, (21 October 2004); doi: 10.1117/12.591968
Show Author Affiliations
Liliana Alvarez, Univ. Nacional de Salta (Argentina)
Elvio Alanis, Univ. Nacional de Salta (Argentina)
Graciela Romero, Univ. Nacional de Salta (Argentina)
Carlos C. Martinez, Univ. Nacional de Salta (Argentina)
G. Lesino, Univ. Nacional de Salta (Argentina)

Published in SPIE Proceedings Vol. 5622:
5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications
Aristides Marcano O.; Jose Luis Paz, Editor(s)

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