首页>
外文期刊>北海道工業大学研究紀要
>Experimental study on heat transfer characteristics of a fibrous insulation slab with an ventilation air flow channel (heating one surface of an insulation by using plate heaters)
【24h】
Experimental study on heat transfer characteristics of a fibrous insulation slab with an ventilation air flow channel (heating one surface of an insulation by using plate heaters)
Temperature distributions and heat transfer characteristics within a glass-fiber slab were observed experimentally. One side of vertical boundaries were subject to a hot temperature by using flat plate heaters, and the other one was open to a convective cooled air at both a cold temperature. The cooled air flows in the direction of gravity through the channel with a rectangular cross section, which have a clearance of 30mm thickness. The glass-fiber slab of 100mm in thickness and 18.1kg/m{sup}3 in density was adopted as a test porous media. Experiments were carried out for various of parameters such as mean velocity of cold cooled air flow (0.05, 0.1 and 0.2m/s). The results show that the heat transfer characteristics within the glass-fiber slab are dominated by air flow rate. The distribution characteristics of local heat flow rates along the plate heaters are found to be influenced by the air flow rate.
展开▼
机译：实验观察到玻璃纤维板内的温度分布和传热特性。垂直边界的一侧通过使用平板加热器加热到高温，另一侧在两个低温下都暴露于对流冷却的空气中。冷却后的空气沿重力方向流经具有矩形横截面的通道，该通道的厚度为30mm。采用厚度为100mm，密度为18.1kg / m {sup} 3的玻璃纤维板作为测试多孔介质。针对各种参数进行了实验，例如冷空气流的平均速度（0.05、0.1和0.2m / s）。结果表明，玻璃纤维板内部的传热特性主要受空气流量的影响。发现沿板式加热器的局部热流率的分布特性受空气流率的影响。
展开▼
