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- Sakaguchi Iwao
- The United Graduate School of Agricultural Sciences, Iwate University
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- Mochizuki Hidetoshi
- Arid Land Research Center, Tottori University
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- Inoue Mitsuhiro
- Arid Land Research Center, Tottori University
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- Inanaga Shinobu
- Arid Land Research Center, Tottori University
Bibliographic Information
- Other Title
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- 塩類を加えた非膨潤性粘土中の水蒸気潜熱輸送
- エンルイ オ クワエタ ヒボウジュンセイ ネンド チュウ ノ スイジョウキ センネツ ユソウ
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Description
Latent heat transfer (LHT) with phase-change from liquid to gas occurs, when there is a temperature gradient in the porous media. LHT is a characteristic of porous media like soils, but there are few studies on the relationship between LHT and solutes. Although Philip and de Vries model was often used to analyze LHT, solutes have never been taken into consideration in the model. In this study, LHT was analyzed theoretically and experimentally with an assumption that the effects of temperature and salt concentration on thermal conductivity are caused by LHT. Thermal conductivities of Kaolin were measured under several conditions of water content, NaCl concentration and temperature. The LHT component of thermal conductivity was separated from the apparent one according to its temperature dependence, and analyzed by the extended method of Hiraiwa and Kasubuchi to estimate the phenomenological coefficient which contains tortuosity factor. As a result, the phenomenological coefficient never exceeded unity even at the maximum. The coefficient was expected to show a constant value under the fixed water content. However, it decreased with NaCl concentration. Further research is required on the tortuosity factor and modification of Philip and de Vries model, or introduction of other coefficients into the model to deal with solutes.
Journal
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- Journal of the Japanese Society of Soil Physics
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Journal of the Japanese Society of Soil Physics 98 (0), 3-10, 2004
Japanese Society of Soil Physics
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Keywords
Details 詳細情報について
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- CRID
- 1390852514694386176
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- NII Article ID
- 130008095318
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- NII Book ID
- AN00347581
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- ISSN
- 24352497
- 03876012
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- NDL BIB ID
- 7161209
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed