摘要
根据线热源瞬态导热模型,设计制作了用于测定含湿土壤导热系数的热探针,研究了加热功率、加热时间、探针壁厚对导热系数测定的影响。对不同含水量的土壤导热系数进行测定,得出纯土、河沙含水量—导热系数拟合关系式。结果表明,热探针法测定含湿土壤的导热系数具有便捷、准确的特点。
The heated probe was designed based on the theory of line heat source for measuring thermal conductivity of wet soil. Then the effects of heating power, heat-up time and the probe thickness on measurement of thermal conductivity were studied. Thermal conductivities of soil with different water contents were measured, and conductivity fitting formula of pure soil and river sand were also obtained. The results showed that the heated probe method was convenient and accurate for measuring thermal conductivity of wet soil.
出处
《制冷空调与电力机械》
2010年第3期13-15,共3页
Refrigeration Air Conditioning & Electric Power Machinery
关键词
热探针
土壤
导热系数
测定
heated probe
soil
thermal conductivity
measurement
