| 太阳能土壤源热泵蓄热过程中的数值模拟 |
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| 引用本文： | 林媛.太阳能土壤源热泵蓄热过程中的数值模拟[J].合肥工业大学学报(自然科学版),2005,28(6):650-654. |
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| 作者姓名： | 林媛 |
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| 作者单位： | 安徽建筑工业学院,环境工程系,安徽,合肥,230022 |
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| 摘 要： | 建立了太阳能土壤源热泵系统蓄热过程的数学模型,在求解模型时考虑了换热器管壁和土壤的接触热阻,定义了一个综合换热系数;在蓄热量的计算上,把换热器沿深度方向上离散成M份,算出每段的蓄热量相加后得出总换热量。文中采用了有限单元法对地下垂直埋管周围土壤的非稳态温度场进行了数值模拟,分析了换热器周围土壤温度变化的规律。
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| 关 键 词： | 土壤蓄热 有限单元法 土壤温度场 数值模拟 |
| 文章编号： | 1003-5060(2005)06-0650-05 |
| 修稿时间： | 2004年9月20日 |
Numerical simulation of heat storage of solar and ground source heat pumps |
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| LIN Yuan.Numerical simulation of heat storage of solar and ground source heat pumps[J].Journal of Hefei University of Technology(Natural Science),2005,28(6):650-654. |
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| Authors: | LIN Yuan |
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| Abstract: | The mathematical model of the process of thermal storage in the solar and ground source heat pump is set up. In solving the model, the pipe wall of the exchanger and the thermal contact resistance are considered,and the synthetic coefficient of heat exchange is defined. In calculating the stored thermal,the length of the exchanger is divided into M parts in the longitudinal direction and the quantity of heat exchange of every segments are added to obtain the total quantity of heat exchange of the whole pipe. Numerical simulation of the unsteady state temperature field around the underground vertical buried pipe is carried out by the finite element method, and the regularity of the soil temperature variation around the exchanger is analyzed. |
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| Keywords: | soil thermal storage finite element method ground temperature field numerical simulation |
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