水分迁移对地下土壤温湿度场分布的影响  

Effect of water migration on distribution of temperature field and moisture field of soil

作　　者：陈红兵[1] 褚赛 吴玮[1] 丁翰婉 

机构地区：[1]北京建筑大学,北京市供热供燃气通风及空调工程重点实验室,北京100044

出　　处：《可再生能源》2016年第1期101-105,共5页Renewable Energy Resources

基　　金：北京市科技新星项目(2011029);北京市青年拔尖人才项目(CIT&TCD201304067);北京市节能减排协同创新中心项目(02058415002)

摘　　要：建立了考虑水分迁移影响下的一维土壤热湿传递数学模型;计算分析了土壤高温蓄热过程中土壤温湿度场随时间和空间的动态变化规律;揭示了土壤热湿传递中含水率峰值现象及成因;探讨了地下土壤热湿传递特性及水分迁移规律。搭建了一维土壤高温蓄热热湿传递测试实验台,通过实验测试对数学模型进行了验证,实验结果与模拟值吻合得较好。Considering the effect of moisture migration, a numerical model of one-dimensional heat and moisture transfer in soil was established to calculate and analyze the dynamic variation of temperature and moisture field with time and spatial location while the soil was storing heat in high temperature. The phenomenon and reason of peak value of volumetric water content（VWC） during the heat and moisture transfer were revealed. The character of heat and moisture transfer and the laws of moisture migration were discussed. A testing rig of one-dimension soil heat charging was constructed to verify the accuracy of the model. The results showed that the experimental values had a good agreement with the simulated values.

关 键 词：高温蓄热 热湿传递 含水率峰值 温湿度场 

分 类 号：TK521[动力工程及工程热物理—热能工程]