Finite-Element Determination of the Equivalent Thermal Conductivity of Hollow Blocks Masonry Wall
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In the light of the energy crisis, energy saving has become an important topic by every country over the world. Energy consumption of buildings usually takes up to 30–40% of the human’s livelihood energy consumption. Hence, the determination of their thermal properties represents an essential task for energy computation. In this paper, a numerical approach is used in order to compute the effective thermal properties of an heterogeneous masonry structure. The structure to be studied is formed by hollow blocks with cavities filled by air, joined periodically with head and bed joints. Those hollow blocks are broadly used due to the good thermal and noise insulation. The thermal conductivities of the solid part of the hollow blocks and of the mortar are the main material input parameters. Moreover, the convection and radiation are taken into account in the cavities. The effective equivalent thermal conductivity tensor is then determined and the effect of radiation and convection is studied.
KeywordsFinite element Hollow block Conduction Convection Radiation Equivalent thermal conductivity tensor
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