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Performance of an automatically controlled wood stove: Thermal efficiency and carbon monoxide emissions

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  • Illerup, Jytte Boll
  • Hansen, Brian Brun
  • Lin, Weigang
  • Nickelsen, Joachim
  • Pedersen, Vagn Hvam
  • Eskerod, Bente
  • Dam-Johansen, Kim

Abstract

The development and performance in practice of a commercial automatically controlled wood stove is described. The digital control system controls the three combustion air inlets individually, based on the combustion phase, measured flue gas temperature, measured O2 outlet concentration and desired room temperature. The control system ensured a well-controlled combustion cycle with respect to temperature and oxygen concentration, yielding improved thermal efficiency and minimized carbon monoxide emissions. A minimum in CO emissions was identified for the oxygen operation range 10–13% O2. The improved performance has been verified by field tests in 5 private homes, demonstrating more stable and optimal O2 concentrations and temperatures compared to manual operation. This resulted in significant lower CO concentrations (up to 27%) alongside higher thermal efficiency (up to 20%) when comparing manually and automatically controlled wood stoves. This new technology has a great potential for improving the stove efficiency/biomass utilisation and reducing the emissions of pollutants at low altitude close to private homes.

Suggested Citation

  • Illerup, Jytte Boll & Hansen, Brian Brun & Lin, Weigang & Nickelsen, Joachim & Pedersen, Vagn Hvam & Eskerod, Bente & Dam-Johansen, Kim, 2020. "Performance of an automatically controlled wood stove: Thermal efficiency and carbon monoxide emissions," Renewable Energy, Elsevier, vol. 151(C), pages 640-647.
    • Handle: RePEc:eee:renene:v:151:y:2020:i:c:p:640-647
    DOI: 10.1016/j.renene.2019.11.057
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    References listed on IDEAS

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    1. Reichert, G. & Schmidl, C. & Haslinger, W. & Schwabl, M. & Moser, W. & Aigenbauer, S. & Wöhler, M. & Hochenauer, C., 2016. "Investigation of user behavior and assessment of typical operation mode for different types of firewood room heating appliances in Austria," Renewable Energy, Elsevier, vol. 93(C), pages 245-254.
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    Cited by:

    1. Ghorashi, Seyed Amin & Khandelwal, Bhupendra, 2023. "Toward the ultra-clean and highly efficient biomass-fired heaters. A review," Renewable Energy, Elsevier, vol. 205(C), pages 631-647.
    2. König, Mario & Hartmann, Ingo & Varas-Concha, Felipe & Torres-Fuchslocher, Carlos & Hoferecht, Frank, 2021. "Effects of single and combined retrofit devices on the performance of wood stoves," Renewable Energy, Elsevier, vol. 171(C), pages 75-84.
    3. Gabriel Reichert & Christoph Schmidl, 2023. "SWOT Analysis of Non-Technical and Technical Measures towards “(Nearly) Zero-Emission Stove Technologies”," Energies, MDPI, vol. 16(3), pages 1-37, January.

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