Interferometric measurement of temperature profiles inside a transparent solid

Liliana Alvarez; Elvio Alanis; Graciela Romero; Carlos C. Martinez; G. Lesino

doi:10.1117/12.591968

21 October 2004 Interferometric measurement of temperature profiles inside a transparent solid

Liliana Alvarez, Elvio Alanis, Graciela Romero, Carlos C. Martinez, G. Lesino

Proceedings Volume 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications; (2004) https://doi.org/10.1117/12.591968
Event: 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, 2004, Porlamar, Venezuela

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.

Citation Download Citation

Liliana Alvarez, Elvio Alanis, Graciela Romero, Carlos C. Martinez, and G. Lesino "Interferometric measurement of temperature profiles inside a transparent solid", Proc. SPIE 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, (21 October 2004); https://doi.org/10.1117/12.591968

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KEYWORDS

Temperature metrology

Interferometry

Solids

Heat flux

Speckle

Speckle pattern

Refractive index

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