Thermoelectric phenomenon in hollow blocks
Abstract
The work presented in this article describes thermoelectric effect in hollow blocks for heat waste harvesting purposes. The study consists of developing a numerical model formed by a heat transfer equation coupled to thermoelectric effects equations to study thermoelectric generators(TEG) incorporated inside Lebanese hollow blocks through two simulations using finite difference scheme and using finite element scheme. Results showed a voltage of 5.85mV produced from a single 8.6 x 0.4 x 0.4 cm3 thermoelectric leg made of Bismuth Antimony Telluride for T=30K. A design with 3 TEGs incorporated inside a hollow block was tested and validated numerically using both methods, the main results obtained for T=30K, showed a voltage V=0.72V, a current I=0.06 A and a figure of merit ZT=0.55. The design was then optimized for economic purposes.
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