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将一根细长的线性热源埋于自然堆积的大麦中 ,通过一套由稳压电源、电位差计、电流表等二次仪表组成的测试装置 ,测定热线的升温速率 ,然后根据非稳态法热线测定的理论模型 ,计算出不同含水率大麦的导热系数。结果显示 ,在常温下 ,含水率在 10 %～ 2 6 .5 3%间的大麦的导热系数在 0 .1344～ 0 .192 1W/m·K之间 ,与其含水率呈现一定的相关性
A slender linear heat source is buried in naturally stacked barley, and the heating rate of the hot wire is measured through a set of testing devices consisting of a secondary meter, such as a regulated power supply, a potentiometer, an ammeter, and the like. According to the unsteady method Hotline determination of the theoretical model to calculate the thermal conductivity of barley with different moisture content. The results showed that under normal temperature, the thermal conductivity of barley with moisture content between 10% and 26.33% was between 0.1344 and 0.191 2 W / m · K, which showed a certain correlation with the water content