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The influence of radiative-convective heat transfer on ignition of the drops of coal-water fuel

The influence of radiative-convective heat transfer on ignition of the drops of coal-water fuel Abstract Simulation results are presented for thermal treatment and ignition of coal-water fuel drops under conditions of radiative-convective heating. The data demonstrate reasonbble compliance between theory and experiment for the integral parameter of ignition process — the delay time of ignition. The radiative component of heat transfer is significant for parameters and conditions of ignition. The increase in the fuel particle size makes this influence bigger. Prognostic potential was evaluated for differnet models of radiative heat tarnsfer. The delay time of ignition obtained from radiative heat transfer model “grey wall” is in good agreement with experimental data. Meanwhile, the method based on radiation diffusion approximation gives the simulation data for delay time much higher than experimental data. It is confirmed that while the process of inflammation of a coal-water particle, the key impotance belongs not to fuel-oxidizer reactions, but rather to a chain of heat treatment events, such as radiative-convective heating, water evaporation, and thermal decomposition of fuel. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Thermophysics and Aeromechanics Springer Journals

The influence of radiative-convective heat transfer on ignition of the drops of coal-water fuel

Syrodoy, S. V.
Thermophysics and Aeromechanics , Volume 25 (3): 15 – May 1, 2018
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Publisher
Springer Journals
Copyright
2018 Pleiades Publishing, Ltd.
ISSN
0869-8643
eISSN
1531-8699
DOI
10.1134/S0869864318030101
Publisher site
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Abstract

Abstract Simulation results are presented for thermal treatment and ignition of coal-water fuel drops under conditions of radiative-convective heating. The data demonstrate reasonbble compliance between theory and experiment for the integral parameter of ignition process — the delay time of ignition. The radiative component of heat transfer is significant for parameters and conditions of ignition. The increase in the fuel particle size makes this influence bigger. Prognostic potential was evaluated for differnet models of radiative heat tarnsfer. The delay time of ignition obtained from radiative heat transfer model “grey wall” is in good agreement with experimental data. Meanwhile, the method based on radiation diffusion approximation gives the simulation data for delay time much higher than experimental data. It is confirmed that while the process of inflammation of a coal-water particle, the key impotance belongs not to fuel-oxidizer reactions, but rather to a chain of heat treatment events, such as radiative-convective heating, water evaporation, and thermal decomposition of fuel.

Journal

Thermophysics and Aeromechanics – Springer Journals

Published: May 1, 2018

References

  • Fuel Suspensions, Publishing House of the USSR Academy of Sciences
  • Suspended coal fuel
    G.S. Khodakov, E.G. Gorlov, G.S. Golovin
  • Water–coal fuel as a real alternative to liquid and gaseous nonrenewable fuels
    V.I. Murko
  • Coal–water fuel as alternative to natural gas and liquid hydrocarbons
    A.A. Krut
  • Assessing CO2 emissions in China's commercial sector: determinants and reduction strategies
    A. Wang, B. Lin
  • The state and prospects of coal and nuclear power generation in Russia (review)
    V.V. Salomatov
  • Chapter 2. Coal characteristics, in Combustion engng issues for solid fuel sys–tems
    B.G. Miller
  • Coal–derived alternative fuels for vehicle use in China: a review
    H. Hao, Z. Liu, F. Zhao, J. Du, Y. Chen
  • Romeo power to gas–electrochemical industry hybrid systems: a case study
    M. Bailera, S. Espatolero, P.L.M. Lisbona
  • Combustion of coal–water suspensions
    A. Kijo–Kleczkowska
  • Analysis of cyclic combustion of solid fuels
    W. Gajewski, A. Kijo–Kleczkowska, J. Leszczyn
  • Theoretical analysis on CWM drop combustion history
    C. Qin
  • The effect of coal composition on coal–water slurry combustion and ash deposition characteristics
    K.J. Matthews
  • Modelling of heat and mass transfer to solve the problem of particle ignition water–coal fuel
    V.V. Salomatov, S.V. Syrodoy, N.Y. Gutareva
  • Тheory of combustion of coal–water fuel drop
    V.V. Salomatov
  • Numerical simulation of ignition of particles of a coal–water fule, Combustion
    V.V. Salomatov
  • Heat and mass transfer in a coal–water fuel particle at the stage of “thermal” treatment
    V.V. Salomatov, S.V. Syrodoy, G.V. Kuznetsov
  • Effect of the shape of particles on the characteristics of the coal–watewr fuel
    S.V. Syrodoi, G.V. Kuznetsov, V.V. Salomatov
  • V.V. Salomatov, S.V. Syrodoy, and N.Yu. Gutareva, Concentration organic components in the hydrocarbon fuel particles conditions and characteristic of ignition, EPJ Web of Conferences, 2014, Vol. 76, No. 01018–1–01018–6.
    V.V. Salomatov, S.V. Syrodoy, and N.Yu. Gutareva, Concentration organic components in the hydrocarbon fuel particles conditions and characteristic of ignition, EPJ Web of Conferences,
  • The influence of the structure heterogeneity on the characteristics and conditions of the coal–water fuel particles ignition in high temperature environment
    S.V. Syrodoy, G.V. Kuznetsov, A.V. Zhakharevicha, N.Yu. Gutareva, V.V. Salomatov
  • Diffusion and Heat Transfer in Chemcial Kinetics
  • Some Fundamentals of Combustion
  • Investigation of a coal–water slurry droplet exposed to hot gas stream
    K.Y. Ahn, S.W. Bbaek, C.E. Choi
  • Evaporation and growth of droplest in gaseous medium
  • The rheodynamics and combustion of coal–water mixtures
    A.P. Burdukov, V.I. Popov, V.G. Tomilov, V.D. Fedosenko
  • Handbook of Lasers
  • Radiative Heat Transfer in Solid Media
  • Physics of Combustion and Explosion
  • Radiation measurement based on spectral emissions in industrial flames
    H.O. Garces, L. Arias, A.J. Rojas, C. Carrasco, A. Fuentes, O. Farias
  • Comparison between solid body and gas radiation in high temperature furnaces under different oxygen enrichments
    B. Mayr, R. Prieler, M. Demuth, C. Hochenauer
  • On gas and particle radiation in pulverized fuel combustion furnaces
    Ch. Yin
  • Numerical investigation of the effects of volatile matter composition and chemical reaction mechanism on pulverized coal combustion characteristics
    X. Wena, H. Wang, Yu. Luo, K. Luo, J. Fan
  • On the Stefan problem
    I.I. Danilyuk
  • Study of temperature dependency of the liquid evaporation rate from free surface and liquid boiling rate on the solid heating surface
    A.A. Khaschenko, O.V. Vecher, E.I. Diskaeva
  • A study to investigate pyrolysis of wood particles of various shapes and sizes
    Y. Chen, K. Aanjaneya, A. Atreya
  • Theory of Turbulent Jets
  • Mathematical modeling of the heat treatment and combustion of a coal particle. V. Burn–up stage
    K. Enkhjargal, V.V. Salomatov
  • Influence of heatsink from upper boundary on the industrial premises thermal conditions at gas infrared emitter operation
    V.I. Maksimov, T.A. Nagornova
  • The Theory of Heat Radiation.
  • Radiative properties of high temperature air, J. Quantitative
    B.H. Armstrong, J. Sokoloff, R.W. Nicholis, D.H. Holland, R.E. Meyerott
  • Mean absorption coefficient of air, nitrogen and oxygen from 22000 to 220000
    B.H. Armstrong
  • Radiative Transfer and Interactions with Conduction and Convection
  • Absorptions Coefficient of Air, Bedford, Mass.: Air Force Cam–bridge Research Center
    J. Sokoloff
  • R. Siegel and J. Howell, Thermal Radiation Heat Transfer, Taylor & Fransis, NY–London.
  • Combustion of coal dust and calculation of coal dust flame
    V.I. Babiy
  • Thermophysics of Solid Fuel
    A.A. Agroskin
  • Coal Chemistry and Processing
  • Foundations of Practical Theory of Combustion
  • Numerical simulation of coal gasification in entrained flow coal gasifier
    H. Watanabe, M. Otaka
  • Catalytic combustion of syngas
    J. Mantzaras
  • Single–step chemistry model and transport coefficient model for hydrogen combustion
    W.C. Jian, J. Wen, S. Lu, J. Guo
  • Study on flame–vortex interaction in a spark ignition engine fueled with methane/carbon dioxide gases
    X. Zhang, T. Wang, J. Xu, S. Zheng, X. Hou
  • Computational fluid dynamics
  • Schemes of high–order accuracy for the multi–dimensional heat conduction equation
    A.A. Samarskii
  • An economic continuous calculation scheme for the Stefan multidimen–sional problem
    A.A. Samarskii, B.D. Moiseenko
  • On diffusion theory of heterogeneous reactions
    D.A. Frank–Kamenetskii
  • Theory of heat explosion. I. Heat explosion with “zero” order reaction
    O.M. Todes