New Photopyroelectric Technique for Precise Measurements of the Thermal Effusivity of Transparent Liquids |
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| Authors: | J A Balderas-López A Mandelis |
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| Affiliation: | (1) Photothermal and Optoelectronic Diagnostics Laboratories (PODL), Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, Ontario, M5R 3G8, Canada;(2) Present address: Unidad Profesional Interdisciplinaria de Biotecnología del IPN, Avenida Acueducto S/N Col. Barrio la Laguna, Del. Gustavo A. Madero, C. P, 07340, México, D. F., México |
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| Abstract: | A new photopyroelectric methodology for thermal effusivity measurements in transparent liquids is presented. The new methodology involves the thermally thick limit of the pyroelectric signal in the standard front-surface configuration. A signal normalization procedure, which avoids the conventional requirement for transfer function determination, is implemented. The thermal effusivity of five liquids was measured by means of this technique, and very good agreement was found with corresponding values reported in the literature. |
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| Keywords: | photopyroelectric thermal effusivity transparent liquids |
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