Thermal Energy Conversion in Wearable Thermoelectric Generators

Abstract

Wearable thermoelectric generators (w-TEGs) convert body heat into electrical energy, providing a continuous power source for small portable wearable electronics. In the context of energy harvesting, w-TEGs contribute to providing usable electrical energy from a source independent of external networks. The w-TEGs provide this energy directly to small portable electronic devices, allowing them to operate without needing external batteries or frequent recharging. This chapter discusses the principles and advancements in w-TEGs, focusing on their ability to convert body heat into electrical energy. The main topics include the mechanisms of heat transfer—conduction, convection, radiation, and evaporation—within the human body and their role in improving w-TEG performance. The chapter also includes aspects related to design improvements, material innovations, and thermal management strategies to increase energy conversion efficiency, and user comfort.