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Type: Artigo de periódico
Title: Thermal Diffusivity Of Sandstone Using Photoacoustics
Author: Guimaraes A.O.
De Souza C.G.
Da Silva E.C.
Soffner M.E.
Mansanares A.M.
Ribeiro H.J.P.S.
Carrasquilla A.A.G.
Vargas H.
Abstract: An open photoacoustic cell was used to investigate the thermal diffusivity of sandstone taken from the Paraná Basin, in Brazil. Although the organic-rich sedimentary rocks represent an important energy source in the Paraná Basin, only limited data are reported concerning their thermophysical properties. A sandstone rock sample, from the Botucatu Formation, was investigated. The thermal diffusivity values were determined with uncertainties around 12 %, comparable to other methods. These values consider not only the experimental errors but also take into account the heterogeneity of the materials. It was possible to verify the behavior of the thermal diffusivity of the sandstone under heat treatment. The variation of the thermal diffusivity followed an expected trend, based on the possible variation of porosity which is related to the decomposition of some constituents. The results presented in this work identify the photoacoustic technique as a useful tool for thermal characterization of sedimentary rocks.
Editor: Springer New York LLC
Rights: fechado
Identifier DOI: 10.1007/s10765-014-1812-0
Date Issue: 2015
Appears in Collections:Unicamp - Artigos e Outros Documentos

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