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AN EXPERIMENTAL STUDY ON THERMOPHYSICAL PROPERTIES OF SOILS.

[In Japanese. / En japonais.]

Author(s) : INABA H.

Type of article: Article

Summary

A SERIES OF MEASUREMENTS FOR THE EFFECTIVE THERMAL CONDUCTIVITY, SPECIFIC HEAT AND UNFROZEN-WATER CONTENT OF VARIOUS SOILS HAVE BEEN CARRIED OUT BY THE TRANSIENT PROBE METHOD AND THE CALORIMETER TECHNIQUE. THE EXPERIMENTS WERE PERFORMED AT A VERY LOW COOLING RATE. THE RATE OF UNFROZEN-WATER CONTENT TRANSFER TO THE SOIL WAS INCREASED WITH INCREASING THE TEMPERATURE -BELOW 273 K (0 DEG C). MEASURED VALUES OF THE CONDUCTIVITY AND SPECIFIC HEAT SHOW A STRONG DEPENDENCE ON TEMPERATURE, INITIAL WATER CONTENT AND SOIL GRAIN SIZE IN THE TEMPERATURE RANGE OF 273 TO 283 K (0 TO 10 DEG C). THE UNUSUAL BEHAVIOUR DUE TO A DECREASE IN THE EFFECTIVE THERMAL CONDUCTIVITY FOR THE FINEST GRAIN SIZE WITH DECREASING TEMPERATURE BELOW 273 K WAS OBSERVED FOR AN INITIAL WATER CONTENT OF 30 TO 40%.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 1985-1284
  • Languages: Japanese
  • Source: Refrigeration - vol. 59 - n. 678
  • Publication date: 1984
  • Document available for consultation in the library of the IIR headquarters only.

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