• Nenad Crnomarković, Laboratory for Thermal Engineering and Energy, Vinča Institute of Nuclear Sciences, Serbia
  • Miroslav A Sijerčić, Laboratory for Thermal Engineering and Energy, Vinča Institute of Nuclear Sciences, Serbia
  • Srđan Belošević, Laboratory for Thermal Engineering and Energy, Vinča Institute of Nuclear Sciences, Serbia
  • Dragan Tucaković, Faculty of Mechanical Engineering, University of Belgrade, Serbia
  • Titoslav Živanović, Faculty of Mechanical Engineering, University of Belgrade, Serbia

Numerical Determination of the Pulverized Coal Flame Radiative Properties

  • Influence of the number of particles that are formed by fragmentation of one char particle on radiative properties of the dispersed phase of the pulverized coal flame, as well as on the results of numerical investigation of the process have been in vestigated. For the combustion conditions in side the furnace of A2 TENT 210 MW thermal unit, concentration of the flyash particles and particle size distribution parameters have been determined under assumption that one char particle forms from one to five flyash particles. Radiative properties of the cloud of flyash particles have been determined using anomalous diffraction method. Results show that increase of the number of flyash particles leads to the increase of the absorption and scattering coefficients. The differential mathematical model has been formed, for the process in side the chosen furnace. The absorption coefficient of the gas phase has been obtained by application of the simple gray gas model, and its value has been kept constant in all examined cases. Results show that in crease of the dispersed phase absorption coefficient leads to the increase of the gas-phase temperature and incident radiative fluxes. Agreement with the results of measurement has been achieved for all values of the dispersed phase radiative properties.
  • Keywords
    mathematical model, furnace, pulverized coal, radiative properties, dispersed phase
  • Pages
    27 - 36
  • Submitted
  • Revised
  • Accepted
    0350-218X, 39 (2013), 1-2, 27-36
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