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Experimental study of forced convection heat transport in porous media

机译：多孔介质强制对流热输送的实验研究

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摘要

The present study is aimed at extending this thematic issue through heat transport experiments and their interpretation at laboratory scale. An experimental study to evaluate the dynamics of forced convection heat transfer in a thermally isolated column filled with porous medium has been carried out. The behavior of two porous media with different grain sizes and specific surfaces has been observed. The experimental data have been compared with an analytical solution for one-dimensional heat transport for local nonthermal equilibrium condition. The interpretation of the experimental data shows that the heterogeneity of the porous medium affects heat transport dynamics, causing a channeling effect which has consequences on thermal dispersion phenomena and heat transfer between fluid and solid phases, limiting the capacity to store or dissipate heat in the porous medium.
机译：本研究旨在通过热传输实验及其在实验室规模的解释方面扩展了这一主题问题。 已经进行了评估填充有多孔介质的热隔离柱中强制对流热传递动态的实验研究。 已经观察到具有不同晶粒尺寸和特定表面的两个多孔介质的行为。 将实验数据与用于局部非热均衡条件的一维热传输的分析解决方案进行了比较。 实验数据的解释表明，多孔介质的异质性影响热传递动力学，导致对热分散现象和流体和固相之间的热传递产生后果的窜流效果，限制了在多孔中储存或散热的能力 中等的。

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