A new method for characterization of shape-stabilized phase change materials (PCMs) based on one single sample and one single experimental device has been proposed. The simplicity of the experimental device is comparable to that of the T-history method: a cylinder of PCM, which is heated/cooled in a furnace following specific temperature patterns (steps, isotherms, and ramps). Instead of simple energy balances as in the T-history method, a numerical heat transfer model is used to retrieve the whole set of parameters/functions characterizing the PCM from temperature measurements at one single point within the PCM. A powerful inversion technique has been proposed for that. Its most striking feature is that it allows identification of enthalpy-temperature functions in an easy way. They are retrieved by solving a problem of time-dependent source estimation by inversion of a linear heat conduction model. It is shown that unknown sources are the output of a linear and invariant state model whose inputs are measured temperatures within the PCM. Enthalpy-temperature functions, as well as parameters derived from heat capacities, transition temperatures, and latent heat, are thus calculated in a simple way. An experimental test for characterization of graphite/salt composites has been carried out to illustrate the appropriateness of our developments.
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November 2009
Research Papers
A Simple Experimental Method for Thermal Characterization of Shape-Stabilized Phase Change Materials
E. Palomo Del Barrio,
E. Palomo Del Barrio
Laboratoire TREFLE UMR 8508 TREFLE—Site ENSAM,
Université Bordeaux 1-CNRS
, Esplanade des Arts et Métiers, 33405 Talence, France
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J. L. Dauvergne,
J. L. Dauvergne
Laboratoire TREFLE UMR 8508 TREFLE—Site ENSAM,
Université Bordeaux 1-CNRS
, Esplanade des Arts et Métiers, 33405 Talence, France
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V. Morisson
V. Morisson
Laboratoire TREFLE UMR 8508 TREFLE—Site ENSAM,
Université Bordeaux 1-CNRS
, Esplanade des Arts et Métiers, 33405 Talence, France
Search for other works by this author on:
E. Palomo Del Barrio
Laboratoire TREFLE UMR 8508 TREFLE—Site ENSAM,
Université Bordeaux 1-CNRS
, Esplanade des Arts et Métiers, 33405 Talence, France
J. L. Dauvergne
Laboratoire TREFLE UMR 8508 TREFLE—Site ENSAM,
Université Bordeaux 1-CNRS
, Esplanade des Arts et Métiers, 33405 Talence, France
V. Morisson
Laboratoire TREFLE UMR 8508 TREFLE—Site ENSAM,
Université Bordeaux 1-CNRS
, Esplanade des Arts et Métiers, 33405 Talence, FranceJ. Sol. Energy Eng. Nov 2009, 131(4): 041010 (8 pages)
Published Online: September 22, 2009
Article history
Received:
December 29, 2008
Revised:
May 19, 2009
Published:
September 22, 2009
Citation
Palomo Del Barrio, E., Dauvergne, J. L., and Morisson, V. (September 22, 2009). "A Simple Experimental Method for Thermal Characterization of Shape-Stabilized Phase Change Materials." ASME. J. Sol. Energy Eng. November 2009; 131(4): 041010. https://doi.org/10.1115/1.3197838
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