Optimization and Application of Unsaturated Soil Thermal Conductivity Model
Based on the models of Campbell and de V-1, a new mathematic model for predicting soil thermal conductivity is developed in this paper. Using the parameters shape factors ( ) and soil solid thermal conductivity ( ), the Campbell model is calculated by the method of the de V-1 model. According to th...
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| Format: | Article |
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Journal of Refrigeration Magazines Agency Co., Ltd.
2017-01-01
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| Series: | Zhileng xuebao |
| Subjects: | |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2017.03.089 |
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| author | Wang Zhihua Wang Tian Wang Fenghao |
| author_facet | Wang Zhihua Wang Tian Wang Fenghao |
| author_sort | Wang Zhihua |
| collection | DOAJ |
| description | Based on the models of Campbell and de V-1, a new mathematic model for predicting soil thermal conductivity is developed in this paper. Using the parameters shape factors ( ) and soil solid thermal conductivity ( ), the Campbell model is calculated by the method of the de V-1 model. According to this method, the soil solid thermal conductivity and shape factors are considered to be soil solid components, and include the effect of temperature on the soil solid thermal conductivity. By comparing the Campbell and de V-1 models, the measured results are in good accordance with the numerical ones, and the model shows better performance when predicting soil thermal conductivity. In addition, the effects of soil temperature and moisture on different soil thermal conductivities are studied. The results indicate that under the same soil temperature and moisture, the thermal conductivity of sand is greater than that of loam, and the thermal conductivity of loam is greater than that of clay. This will provide new ideas for establishing a coupled heat and moisture transfer model in unsaturated soil for heat exchangers. |
| format | Article |
| id | doaj-art-ba0959bb4b6a4d67bfa292572e4bb2d3 |
| institution | OA Journals |
| issn | 0253-4339 |
| language | zho |
| publishDate | 2017-01-01 |
| publisher | Journal of Refrigeration Magazines Agency Co., Ltd. |
| record_format | Article |
| series | Zhileng xuebao |
| spelling | doaj-art-ba0959bb4b6a4d67bfa292572e4bb2d32025-08-20T02:03:04ZzhoJournal of Refrigeration Magazines Agency Co., Ltd.Zhileng xuebao0253-43392017-01-013866511730Optimization and Application of Unsaturated Soil Thermal Conductivity ModelWang ZhihuaWang TianWang FenghaoBased on the models of Campbell and de V-1, a new mathematic model for predicting soil thermal conductivity is developed in this paper. Using the parameters shape factors ( ) and soil solid thermal conductivity ( ), the Campbell model is calculated by the method of the de V-1 model. According to this method, the soil solid thermal conductivity and shape factors are considered to be soil solid components, and include the effect of temperature on the soil solid thermal conductivity. By comparing the Campbell and de V-1 models, the measured results are in good accordance with the numerical ones, and the model shows better performance when predicting soil thermal conductivity. In addition, the effects of soil temperature and moisture on different soil thermal conductivities are studied. The results indicate that under the same soil temperature and moisture, the thermal conductivity of sand is greater than that of loam, and the thermal conductivity of loam is greater than that of clay. This will provide new ideas for establishing a coupled heat and moisture transfer model in unsaturated soil for heat exchangers.http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2017.03.089unsaturated soilthermal conductivitymodel studyoptimization |
| spellingShingle | Wang Zhihua Wang Tian Wang Fenghao Optimization and Application of Unsaturated Soil Thermal Conductivity Model Zhileng xuebao unsaturated soil thermal conductivity model study optimization |
| title | Optimization and Application of Unsaturated Soil Thermal Conductivity Model |
| title_full | Optimization and Application of Unsaturated Soil Thermal Conductivity Model |
| title_fullStr | Optimization and Application of Unsaturated Soil Thermal Conductivity Model |
| title_full_unstemmed | Optimization and Application of Unsaturated Soil Thermal Conductivity Model |
| title_short | Optimization and Application of Unsaturated Soil Thermal Conductivity Model |
| title_sort | optimization and application of unsaturated soil thermal conductivity model |
| topic | unsaturated soil thermal conductivity model study optimization |
| url | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2017.03.089 |
| work_keys_str_mv | AT wangzhihua optimizationandapplicationofunsaturatedsoilthermalconductivitymodel AT wangtian optimizationandapplicationofunsaturatedsoilthermalconductivitymodel AT wangfenghao optimizationandapplicationofunsaturatedsoilthermalconductivitymodel |