质量含水率对土壤温度场影响的试验研究  

Experimental study on the influences of the soil moisture content on the soil temperature field

作　　者：裴海涛[1] 翟晓强[1] 王前进[1] 王晓霖[1] 

机构地区：[1]上海交通大学制冷与低温工程研究所,上海200240

出　　处：《可再生能源》2013年第2期71-74,79,共5页Renewable Energy Resources

基　　金：上海市科委科研计划项目(07DZ12021)

摘　　要：搭建土壤换热实验台,研究非饱和土壤换热时土壤质量含水率对土壤温度场的影响。采用恒温水作为热源,分别在4种土壤质量含水率工况下进行试验,研究土壤温度变化情况,试验用土壤在非饱和工况下加热10 h后的热影响半径约为680 mm,质量含水率越低的土壤受到的热扰动越剧烈。A experimental system was built to study the influence on the moisture content of soil on the soil temperature field during non-saturated soil heat transfer process. Using the thermostat- ted water as the heat source, the experiment was conducted under four different soil moisture con- tents to study the changes of the temperature field. Results showed that the radius of the thermal influence was about 680 mm when the non-saturated soil had been heated for 10 hours. The ther- mal fluctuation caused by the heat source gained severer along with the reduction of the soil mois- ture content.

关 键 词：地埋管换热器 非饱和土壤 质量含水率 土壤温度场 

分 类 号：TK529[动力工程及工程热物理—热能工程] TU833[建筑科学—供热、供燃气、通风及空调工程]