Por favor, use este identificador para citar o enlazar este ítem: http://repositoriodigital.ipn.mx/handle/123456789/11066
Título : Specific Heat Measurements by a Thermal Relaxation Method: Influence of Convection and Conduction
Palabras clave : heat conduction
heat convection
specific heat capacity
Fecha de publicación : 16-ene-2013
Editorial : International Journal of Thermophysics
Descripción : 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.
Instituto Politecnico Nacional CONACYT
URI : http://www.repositoriodigital.ipn.mx/handle/123456789/11066
Otros identificadores : Vol. 27, No. 6, November 2006
Aparece en las colecciones: Doctorado

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