Investigation of a Thermoelectric Generator with Sandwich Leg Modification

Abstract

The use of batteries in electrical vehicles unknowingly generates heat. Thermoelectric generators (TEGs) can convert this heat into electrical energy. This research discusses the use of composite modules with BiSbTe, PbTeS, SnSe type P-Legs materials combined with CeFeCoSb and AgPbSbTe materials as type N–Legs with Ansys simulation. The test results have revealed that there has been a decrease in TEG efficiency at bigger leg thickness. However, this difference improves with increasing working temperature at the TEG. The investigation on the number of legs has not changed significantly on the TEG efficiency. In the CeFeCoSb and AgPbSbTe composite modules, heat absorption has decreased as the thickness of the TEG leg increased. However, the relationship between this decline and temperature rise is inverse. At higher temperatures, there has been greater absorption of temperature. This has happened in both composite modules. AgPbSbTe-SiGe material has demonstrated the compatibility of N-type TE materials that have changed smoothly from 400K to 1000K in temperature. The CeFeCoSb material has transformed smoothly from a temperature of 300K to 1000K without any resistance. This shows that the CeFeCoSb material can be a single material as an n-leg thermoelectric material.
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