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Thermal Gradients in Thermal Analysis Experiments

  • Jordi FarjasEmail author
  • Daniel Sánchez-Rodriguez
  • Hichem Eloussifi
  • Pere Roura
Chapter
Part of the Hot Topics in Thermal Analysis and Calorimetry book series (HTTC, volume 11)

Abstract

The concept of “sample temperature” in non-isothermal thermal analysis experiments is analyzed. From the analysis of the heat balance inside the sample, it is shown that the existence of such sample temperature is restricted to experimental conditions, where the thermal gradients are negligible. Two different sources of thermal gradients are studied: the sample thermal inertia and the heat of reaction that is not quickly removed. The conditions to prevent the formation of thermal gradients as well as the condition for a thermal runaway to occur are deduced. Finally, it is shown that the aspect ratio is a crucial parameter for the formation of thermal gradients within the sample.

Keywords

Thermal Gradient Sample Mass Combustion Front Ignition Time Crucible Wall 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

This work has been funded by the Spanish Programa Nacional de Materiales through project MAT2014-51778-C2-2-R and by the Generalitat de Catalunya contract No. 2014SGR-00948.

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Copyright information

© Springer International Publishing Switzerland 2017

Authors and Affiliations

  • Jordi Farjas
    • 1
    Email author
  • Daniel Sánchez-Rodriguez
    • 1
  • Hichem Eloussifi
    • 1
  • Pere Roura
    • 1
  1. 1.University of GironaGironaSpain

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