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Amélioration de la précision de la méthode de l'historique des températures utilisée afin de mesurer la chaleur de fusion de plusieurs matériaux.

Accuracy improvement of a T-history method for measuring heat of fusion of various materials.

Auteurs : HONG H., KIM S. K., KIM Y. S.

Type d'article : Article, Article de la RIF

Résumé

The T-history method, developed for measuring the heat o fusion of phase-change material (PCM) in sealed tubes, has the advantages of a simple experimental device and convenience with no sampling process. However, some incorrect assumptions in the original method, such as using a degree of supercooling as the end of latent heat period and neglecting sensible heat during phase change, can cause significant errors in determining the heat of fusion. This problem was improved by the authors in order to predict better results. The present study shows that the modified T-history method is successfully applied to a variety of PCMs such as paraffin and lauric acid having no or a low degree of supercooling. Also, it turned out that selected periods for sensible and latent heat do not significantly affect the accuracy of heat of fusion. As a result, the method can provide an appropriate means to assess a newly developed PCM using a cycle test, even if a very accurate value cannot be obtained.

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Format PDF

Pages : 360-366

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    20 €

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    Gratuit

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Détails

  • Titre original : Accuracy improvement of a T-history method for measuring heat of fusion of various materials.
  • Identifiant de la fiche : 2004-1557
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 27 - n. 4
  • Date d'édition : 06/2004

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