In this work, different tubular solid-foam packed-beds were experimentally investigated under air flow in order to determine the effective conductivity and wall-to-bed heat transfer coefficient. Several foam types with different material, namely silicon carbide and alumina, and cell density were tested. Foam samples were experimentally studied using different air flow rates and wall temperatures ranging between 200 and 500 °C. Axial and radial steady-state temperatures in the bed were experimentally measured and analysed with a two-dimensional, one-equation model. A Chilton–Colburn-type correlation based on the reactor diameter as characteristic dimension was proposed for the wall-to-bed heat transfer coefficient, which proved good to describe the behaviour of all tested foams. Effective radial thermal conductivity and pressure drop in the foams were also characterized.

在这项工作中，在空气流下对不同的管状固体泡沫填充床进行了实验研究，以确定有效的电导率和壁对床的传热系数。测试了几种具有不同材料的泡沫类型，即碳化硅和氧化铝以及泡孔密度。使用不同的空气流量和200至500°C的壁温对泡沫样品进行了实验研究。实验测量了床的轴向和径向稳态温度，并使用二维一方程模型进行了分析。提出了基于反应器直径作为特征尺寸的Chilton-Colburn型相关性，以用于壁对床的传热系数，事实证明，它很好地描述了所有测试泡沫的行为。