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Specific Heat Measurements by a Thermal Relaxation Method: Influence of Convection and Conduction

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This paper involves the well-known thermal relaxation method for measurement of the specific heat (c) of thin solid samples. Although this method was applied successfully in recent years for the characterization of different materials, in this work some aspects that must be taken into account in order to avoid problems based on satisfying the required experimental conditions of heat flux imposed by the physical model used for data analysis and processing will be discussed. For this purpose, for a given experimental geometry, the heat diffusion equation will be solved in order to obtain the sample’s requirements for reliable measurements of c, regarding its thickness and thermal conductivity. An experimental device is described that can be used for the study of the influence of heat dissipation by convection on the method. A computer simulation was performed for comparing the simple model with one that takes to in account the gradient of temperature inside the sample. The results of measurements are presented.

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Authors and Affiliations

  1. Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear (CEADEN), Calle 30 #502, Playa, La Habana, Cuba

    H. Valiente

  2. Instituto de Materiales, Universidad de La Habana, San Lázaro y L, Vedado 10400, La Habana, Cuba

    O. Delgado-Vasallo

  3. Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada del IPN, Legaria 694 Colonia Irrigación, 11500, México, D. F., Mexico

    R. Abdelarrague, A. Calderón & E. Marin

Authors
  1. H. Valiente
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  2. O. Delgado-Vasallo
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  3. R. Abdelarrague
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  4. A. Calderón
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  5. E. Marin
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Corresponding author

Correspondence to A. Calderón.

Additional information

Part of this work was performed when the author was at Universidad de La Habana, Facultad de Física, San Lázaro y L, Vedado 10400, La Habana, Cuba.

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Valiente, H., Delgado-Vasallo, O., Abdelarrague, R. et al. Specific Heat Measurements by a Thermal Relaxation Method: Influence of Convection and Conduction. Int J Thermophys 27, 1859–1872 (2006). https://doi.org/10.1007/s10765-006-0127-1

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  • DOI: https://doi.org/10.1007/s10765-006-0127-1

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