• Accueil
  • Publications

  • Measurement of thermal conductivity and heat ca...

Document IIF

Measurement of thermal conductivity and heat capacity of phase change materials with the longitudinal heat flow method.

Mesure des conductivité thermique et de la capacité calorifique des matériaux à changement de phase par la méthode de l'écoulement de chaleur longitudinal.

Numéro : pap. 7

Auteurs : BRÜTTING M., HAGEN T., VIDI S., et al.

Résumé

Even though Differential Scanning Calorimetry (DSC) is a common method for the determination of specific heat capacity, there is also need for methods suitable for a larger specimen size in the range of several cubic centimeters instead of micro liters. For phase change materials or compounds which show specimen size dependent thermophysical caloric properties below a critical specimen volume, e.g. sub cooling effects, the larger specimen volumes are absolutely essential. The Longitudinal Heat Flow Method is a well-known steady state method to measure the thermal conductivity of medium sized solid samples. With a modification of the measurement procedure to a transient temperature step at the top and bottom end of the stack it is now possible to determine the heat capacity of a specimen in a defined temperature interval. An apparent heat flux is determined during the transient heating phase, which can be evaluated with a novel analytical model. Numerical simulations of this new measurement method are validated by experimental investigation of different materials.

Documents disponibles

Format PDF

Pages : 8

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Measurement of thermal conductivity and heat capacity of phase change materials with the longitudinal heat flow method.
  • Identifiant de la fiche : 30017870
  • Langues : Anglais
  • Source : 11th IIR Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning. Proceedings: Karlsruhe, Germany, May 18-20, 2016.
  • Date d'édition : 18/05/2016
  • DOI : http://dx.doi.org/10.18462/iir.pcm.2016.0007

Liens


Voir d'autres communications du même compte rendu (31)
Voir le compte rendu de la conférence