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THERMAL CONDUCTIVITY OF POROUS WET BODIES: THEORETICAL EXAMINATION AND MEASUREMENT FEASIBILITY.

CONDUCTIVITE THERMIQUE DE MATERIAUX POREUX HUMIDES : EVALUATION THEORIQUE ET POSSIBILITE DE MESURE.

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

Type of article: Article

Summary

THE AUTHORS DEVELOP A MATHEMATICAL MODEL OF SIMULTANEOUS HEAT AND MASS TRANSFER IN UNSATURATED POROUS MEDIA AND PUT FORWARD THE INFLUENCE OF THE TOTAL PRESSURE GRADIENT IN THE GASEOUS PHASE ON THE MASS TRANSFER. THIS MODEL ENABLES ONE TO INVESTIGATE THE THEORETICAL NOTION OF THE APPARENT THERMAL CONDUCTIVITY OF A WET POROUS MEDIUM AND TO SIMULATE A HOT PLATE MEASUREMENT AND AN UNSTEADY STATE ONE (< FLASH > METHOD). THE GREAT IMPORTANCE OF BOTH THE TOTAL PRESSURE GRADIENT AND THE BOUNDARY CONDITIONS IS SHOWN.

Details

  • Original title: CONDUCTIVITE THERMIQUE DE MATERIAUX POREUX HUMIDES : EVALUATION THEORIQUE ET POSSIBILITE DE MESURE.
  • Record ID : 1988-1397
  • Languages: French
  • Source: International Journal of Heat and Mass Transfer - vol. 30 - n. 11
  • Publication date: 1987

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