绝热坑槽内土壤热湿迁移的实验研究

以太阳能在地下土壤蓄热为背景,通过实验研究了绝热坑槽内土壤的热湿迁移问题.实验中分别测试了不同蓄热温度、不同初始含湿量下土壤温度场和湿度场的变化过程,分析了蓄热温度和含湿量对土壤温度场和湿度场的影响,得到热湿迁移过程中温度场和湿度场变化是同步进行、相互影响的结论.当初始含湿量为0.2m3/m3时,坑槽内土壤的整体温升最大.蓄热温度越高,坑槽内土壤的整体温升越高,越有利于坑槽的蓄热.

Experimental study on the heat and moisture transfer in adiabatic pit slot soil

Based on solar energy stored in the soil,the thesis is on the transter between the heat and moisture in adiabatic pit slot soil by experiments. It tests the variation of temperature and humidity of the field at different heat storages and different initial moisture contents, and analyzes the influence that temperature of heat storage and content of different initial moisture acts on soil temperature field and humidity field, and then comes to the conclusion that the variation of heat field and moisture field in the process of heat transfer is syn- chronized and influences each other. When the initial moisture content is 0. 2 m^3/m^3 , the overall temperature of soil in pit slot reaches the highest pot. The higher heat storage temperature, the faster overall temperature in soil pit rises, and more favorable to the heat storage of pit slot.