Characterization of a thermoelectric generator at low temperatures


Karabetoğlu S., Sisman A., Öztürk Z. F. , SAHIN T.

ENERGY CONVERSION AND MANAGEMENT, vol.62, pp.47-50, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 62
  • Publication Date: 2012
  • Doi Number: 10.1016/j.enconman.2012.04.005
  • Journal Name: ENERGY CONVERSION AND MANAGEMENT
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.47-50
  • Keywords: Thermoelectric properties, Thermoelectric generators, Cryogenic characterization, Bi2Te3, PERFORMANCE, COOLER, DESIGN
  • Istanbul Technical University Affiliated: Yes

Abstract

For the low temperature applications of Bi2Te3 based thermoelectric power generators (TEGs), determination of low temperature material behaviors is important. In the temperature range of 100-375 K, temperature dependency of Seebeck coefficient and electrical conductivity of a Bi2Te3 based TEG are experimentally determined. Furthermore, for a constant temperature difference, the variation of maximum power output with the mean temperature is analytically examined based on the experimentally measured material properties. It is observed that 250 K seems a critical mean operating temperature for the considered Bi2Te3 module. Correlations for temperature dependency of material quantities are also given for the temperature region of 100-375 K. The results can be used for the low temperature applications of Bi2Te3 based TEGs. (C) 2012 Elsevier Ltd. All rights reserved.