AUTOMATIC BIOMASS BOILER WITH AN EXTERNAL THERMOELECTRIC GENERATOR

Authors

  • Marian Brázdil Brno University of Technology, Faculty of Mechanical Engineering, Energy Institute, Department of Energy, Technická 2896/2, 616 69 Brno
  • Ladislav Šnajdárek Brno University of Technology, Faculty of Mechanical Engineering, Energy Institute, Department of Energy, Technická 2896/2, 616 69 Brno
  • Petr Kracík Brno University of Technology, Faculty of Mechanical Engineering, Energy Institute, Department of Energy, Technická 2896/2, 616 69 Brno
  • Jirí Pospíšil Brno University of Technology, Faculty of Mechanical Engineering, Energy Institute, Department of Energy, Technická 2896/2, 616 69 Brno

DOI:

https://doi.org/10.14311/AP.2014.54.0006

Abstract

This paper presents the design and test results of an external thermoelectric generator that utilizes the waste heat from a small-scale domestic biomass boiler with nominal rated heat output of 25 kW. The low-temperature Bi2Te3 generator based on thermoelectric modules has the potential to recover waste heat from gas combustion products as effective energy. The small-scale generator is constructed from independent segments. Measurements have shown that up to 11 W of electricity can be generated by one segment. Higher output power can be achieved by linking thermoelectric segments. The maximum output power is given by the dew point of the flue gas. The electrical energy that is generated can be used, e.g., for power supply or for charging batteries. In the near future, thermoelectric generators could completely eliminate the dependence an automated domestic boiler system on the power supply from the electricity grid, and could ensure comfortable operation in the event of an unexpected power grid failure.

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Published

2014-02-28

Issue

Vol. 54 No. 1 (2014)

Section

Articles

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How to Cite

Brázdil, M., Šnajdárek, L., Kracík, P., & Pospíšil, J. (2014). AUTOMATIC BIOMASS BOILER WITH AN EXTERNAL THERMOELECTRIC GENERATOR. Acta Polytechnica, 54(1), 6-9. https://doi.org/10.14311/AP.2014.54.0006