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Numerical study of a heat transfer process in a low power heating boiler equipped with afterburning chamber

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  • Judt, W.
  • Ciupek, B.
  • Urbaniak, R.

Abstract

The paper presents a numerical study of a heat transfer process realized in a three draughts low power heating boiler for solid fuels combustion equipped with an afterburning chamber. The main reason for the proposed research is to define the character of an exhaust gas flow through the special construction of heating device at different levels of the heat loading. Heating boiler construction allows for dividing stream of the flue gases into two separated streams. One part of the stream is transferred directly to the afterburning chamber and omits first two draughts of the heating boiler, where the rest of exhausts is directed to. Authors simulated the limitation of exhaust streams division into the afterburning chamber in order optimize the heat transfer process. Obtained results showed that the character of exhaust gas flow strongly depends on the amount of heating power of the heating device. Changes in exhaust gas flow caused increasing of heating power obtained for the nominal load by 4.2%. Similar effect was not visible during heating boiler work with minimal level of the heat load.

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  • Judt, W. & Ciupek, B. & Urbaniak, R., 2020. "Numerical study of a heat transfer process in a low power heating boiler equipped with afterburning chamber," Energy, Elsevier, vol. 196(C).
    • Handle: RePEc:eee:energy:v:196:y:2020:i:c:s0360544220302000
    DOI: 10.1016/j.energy.2020.117093
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    1. Bartosz Ciupek & Rafał Urbaniak & Dobrosława Kinalska & Zbigniew Nadolny, 2024. "Flue Gas Recirculation System for Biomass Heating Boilers—Research and Technical Applications for Reductions in Nitrogen Oxides (NO x ) Emissions," Energies, MDPI, vol. 17(1), pages 1-16, January.
    2. Karol Tucki & Olga Orynycz & Andrzej Wasiak & Antoni Świć & Leszek Mieszkalski & Joanna Wichłacz, 2020. "Low Emissions Resulting from Combustion of Forest Biomass in a Small Scale Heating Device," Energies, MDPI, vol. 13(20), pages 1-18, October.
    3. Bartosz Ciupek & Andrzej Frąckowiak, 2024. "Review of Thermal Calculation Methods for Boilers—Perspectives on Thermal Optimization for Improving Ecological Parameters," Energies, MDPI, vol. 17(24), pages 1-15, December.
    4. Bartosz Ciupek & Karol Gołoś & Radosław Jankowski & Zbigniew Nadolny, 2021. "Effect of Hard Coal Combustion in Water Steam Environment on Chemical Composition of Exhaust Gases," Energies, MDPI, vol. 14(20), pages 1-24, October.
    5. Joachimiak, Damian & Joachimiak, Magda & Frąckowiak, Andrzej, 2024. "Determination of boundary conditions from the solution of the inverse heat conduction problem in the gas nitriding process," Energy, Elsevier, vol. 300(C).
    6. Victoria Kornienko & Mykola Radchenko & Andrii Radchenko & Hanna Koshlak & Roman Radchenko, 2023. "Enhancing the Fuel Efficiency of Cogeneration Plants by Fuel Oil Afterburning in Exhaust Gas before Boilers," Energies, MDPI, vol. 16(18), pages 1-20, September.

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