The Essential Physics of Thermoelectricity for Mechanical Engineers

Abstract

Frequently, mechanical engineers are interested in the generation of power, and as such study the efficiency of a specific system by applying the principles of classical thermodynamics. Studying a thermoelectric generator is no different and the thermodynamics involved fall into the same group classed as heat-engines. Beyond that the mechanical engineer usually falters as electronic and material aspects come into play. While a full study is quite involved, presented here is a simplified attempt to bring out the basics that underline the physical processes involved in a thermoelectric generator. The engineering student of energy conversion and thermoelectricity is thus exposed somewhat to the physics without necessarily going into specialized detail. Inherently involving several related yet distinct mechanical and electronic engineering fundamental topics, thermoelectricity provides a perfect interdisciplinary vehicle for an early introduction to engineering design.