Share

EXPERIMENTAL AND THEORETICAL APPROACH OF THE THERMAL CONDUCTIVITY OF WET POROUS MEDIA. 1. EXPERIMENTS.

APPROCHE EXPERIMENTALE ET THEORIQUE DE LA CONDUCTIVITE THERMIQUE DES MILIEUX POREUX HUMIDES. 1. EXPERIMENTATION.

Author(s) : AZIZI S., MOYNE C., DEGIOVANNI A.

Type of article: Article

Summary

AN EXPERIMENTAL TECHNIQUE BY THE PULSE METHOD IS DEVELOPED IN ORDER TO MEASURE THE APPARENT THERMAL DIFFUSIVITY OF WET POROUS MEDIA. AT LOW TEMPERATURE, THE TRANSFER BEING MAINLY CONDUCTIVE, THE ANALYSIS OF THE EXPERIMENTAL RESULTS PROVES THE INADEQUACY OF SIMPLE CONDUCTIVITY MODELS AS WELL AS THE ESSENTIAL ROLE OF THE WATER DISTRIBUTION (FOR UNCONSOLIDATED MEDIA). AT HIGHER TEMPERATURE THE RESULTS ARE COMPARED WITH KRISCHER AND DE VRIES' CLASSICAL THEORIES. THE EXPERIMENTAL RESISTANCE FACTOR TO THE GASEOUS DIFFUSION WHICH IS DEDUCED HAPPENS TO TAKE TOO HIGH VALUES.

Details

  • Original title: APPROCHE EXPERIMENTALE ET THEORIQUE DE LA CONDUCTIVITE THERMIQUE DES MILIEUX POREUX HUMIDES. 1. EXPERIMENTATION.
  • Record ID : 1989-1309
  • Languages: French
  • Source: International Journal of Heat and Mass Transfer - vol. 31 - n. 11
  • Publication date: 1988

Links


See other articles in this issue (3)
See the source

Indexing