I(V) data sets on Thermoelectric Generators

Published: 28 October 2021| Version 1 | DOI: 10.17632/tfg4byhch8.1


Current voltage data of Thermoelectric Generators (TEGs), model SP-184827145.


Steps to reproduce

The measurements were taken at the Laboratório de Caracterização de Materiais (LCM) of the Instituto de Física e Química (IFQ) of Universidade Federal de Itajubá (UNIFEI). Eight TEGs - called TEG1 TEG2, TEG3, TEG4, TEG5, TEG6 TEG7, and TEG8 - of the model SP-184827145 were used, based on Bismuth Telluride (Bi2Te3), that withstands temperatures up to 200 °C, with length 40 mm, width 40 mm and height 3.4 mm, insulated with Teflon and connected with copper cables. Each TEG operates with a temperature gradient between its hot and cold sides which generates a voltage drop between those sides through the Seebeck effect. Since the generated voltage drop is proportional to the temperature gradient and the proportionality constant as the module’s Seebeck coefficient, measurements need to be carried out through a specific experimental setup comprising a power source used to oppose the generated module’s voltage, and electronic load to dissipate the generated power and a voltmeter to acquire module’s voltage and current as I(V) characteristics and this defines the measurement circuit. The characterization of the TEG’s device is carried out by I(V) measurements considering some fixed generated temperature gradients of 10 °C, 20 °C, 30 °C, 40 °C, 50 °C, 70 °C, 80 °C and 90 °C. The measurements were controlled and that changes the applied voltage in 5 mV steps from 0 V to the open-circuit voltage observed for each temperature gradient. For each of the eight TEGs, nine measurements were made, where gradients of approximately, 10 °C, 20 °C, 30 °C, 40 °C, 50 °C, 60 °C, 70 °C, 80 °C and 90 °C.


Universidade Federal de Itajuba


Thermoelectrics, Thermoelectric Materials, Materials Characterization