POWER GENERATION BY A THERMOELECTRIC SEMICONDUCTOR EXPOSED ON A HOT MEDIA

Thermoelectric modules are mostly designed to extract waste heat from solid bodies for power generation or electrical power directly into cooling and heating. However, the majority of waste heat is generated in gaseous or liquid media. Foam structures due to large porosity and high surface area could be an efficient solution to extract the waste heat from the hot gases and liquids as compared to their bulk counterparts. The aim of this work is to present a practical method for fabrication a thermoelectric foams module and to understand the problems and advantages of design. This is a novel work to fabricate module which prepared by thermoelectric base elements Bi Te a nd Sb to work at room temperature. Thermoelectric material (Bi0.25Sb0.75)2Te3 was fabricated as replicas foam of the compounds and domestic salt powder under 500 MPa pressure using a hot die pressing system. The foam was characterized by measuring the particle size and morphology. The morphology was defined by scanning electron microscopy, and optical microscope.

کلیدواژه ها:

Thermoelectric ، Foams ، Modules ، Powergeneration ، Waste heat ، Energy