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Contrôle des propriétés d'isolation en utilisant des joints flexibles.

Control of insulating properties using flexible soft seals.

Auteurs : KHALED A. R. A., VAFAI K.

Type d'article : Article

Résumé

This work analyses and analytically discusses a method of controlling the insulating properties of an assembly. It establishes the feasibility of utilizing gas layers within the insulating assembly separated by flexible soft seals. The volumetric thermal expansion of the main gas layers within the insulating assembly were determined taking into consideration the variation in the gas pressure due to the elastic behaviour of the supporting flexible soft seals. It was found that the volumetric thermal expansion of the main gas approaches its isobaric condition value as the main gas layer thickness decreases. It was also found that the insulating properties were enhanced when the main gas had a minimum thermal conductivity and when relatively high temperatures were experienced. However, the insulating properties deteriorate at high temperatures when the main gas has a relatively large thermal conductivity. Finally, advanced insulating assemblies with maximized insulating properties are proposed.

Détails

  • Titre original : Control of insulating properties using flexible soft seals.
  • Identifiant de la fiche : 2004-1669
  • Langues : Anglais
  • Source : International Journal of Heat and Mass Transfer - vol. 47 - n. 6-7
  • Date d'édition : 03/2004

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