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THERMAL CONDUCTIVITY OF A MICROPOROUS PARTICULATE MEDIUM: MOIST SILICA GEL.

Author(s) : BJURSTROM H., KARAWACKI E., CARLSSON B.

Type of article: Article

Summary

THE INFLUENCE OF POROSITY, WATER CONTENT, TOTAL GAS PRESSURE AND TEMPERATURE IS DETERMINED THROUGH MEASUREMENTS UNDER TRANSIENT CONDITIONS WITH THE TRANSIENT HOT-STRIP METHOD AND UNDER STATIC CONDITIONS IN A BENCH-SCALE REACTOR. THE PREDICTIONS OF THE EFFECTIVE THERMAL CONDUCTIVITY FROM FOUR DIFFERENT SIMPLE MODELS (RUSSELL, GEOMETRIC MEAN VALUE, UNIT-CELL MODEL AND STOCHASTIC MODEL) AGREE REASONABLY WELL WITH THE EXPERIMENTAL RESULTS. THE UNIT-CELL MODEL IS EXTENDED IN ORDER TO ACCOUNT FOR THE WATER SORBED IN THE MICROPORES AND DESCRIBES SATISFACTORILY THE DEPENDENCY OF THE EFFECTIVE THERMAL CONDUCTIVITY ON THE WATER CONTENT.

Details

  • Original title: THERMAL CONDUCTIVITY OF A MICROPOROUS PARTICULATE MEDIUM: MOIST SILICA GEL.
  • Record ID : 1985-1028
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 27 - n. 11
  • Publication date: 1984

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