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Determination of the effective thermal conductivity of solid fuels by the laser flash method

Treść / Zawartość
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
In this study, a new laser flash system was proposed for the determination of the thermal conductivity of brown coal, hard coal and anthracite. The main objective of the investigation was to determine the effect of coal rank, composition, physical structure and temperature on thermal conductivity. The solid fuels tested were medium conductors of heat whose determined thermal conductivities were in the range of 0.09 to 0.23 W/(m K) at room temperature. The thermal conductivity of the solid fuels tested typically increased with the rank of coal and the measurement temperature. The results of this study show that the physical structure of solid fuels and temperature have a dominant effect on the fuels' thermal conductivity.
Rocznik
Strony
3--16
Opis fizyczny
Bibliogr. 22 poz., il.
Twórcy
  • Czestochowa University of Technology, Institute of Thermal Machinery, Armii Krajowej 21, 42-201 Częstochowa, Poland
autor
  • Czestochowa University of Technology, Institute of Thermal Machinery, Armii Krajowej 21, 42-201 Częstochowa, Poland
autor
  • Czestochowa University of Technology, Institute of Thermal Machinery, Armii Krajowej 21, 42-201 Częstochowa, Poland
Bibliografia
  • [1] KOSOWSKA-GOLACHOWSKA M.: Coal Combustion. Handbook of Combustion, Vol. 4: Solid Fuels, (M. Lackner, F. Winter and A.K. Agarwa, Eds.), 171-215. Wiley-VCH, Weinheim 2010.
  • [2] ATKINSON B., MERRICK D.: Mathematical models of the thermal decomposition of coal. 4 - Heat transfer and temperature profiles in a coke-oven charge. Fuel 62(1983), 553-561.
  • [3] GAJEWSKI W., KOSOWSKA-GOLACHOWSKA M.: The thermal fragmentation of coal in a bubbling fluidized bed. Arch. Thermodyn. 28(2007), 2, 85-96.
  • [4] GAJEWSKI W., KIJO-KLECZKOWSKA A., LESZCZYŃSKI J.: Analysis of cyclic combustion of solid fuels. Fuel 88(2009), 221-234.
  • [5] PEŁKA P.: Modeling of mass loss of char particle during combustion on flow of inert material. Fuel 90(2011), 904-932.
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  • [13] STANGER R., XIE W., WALL T., LUCAS J., MAHONEY M.: Dynamic measurement of coal thermal properties and elemental composition of volatile matter during coal pyrolysis. J. Mater. Res. Technol. 3(2014), 1, 2-8.
  • [14] AGROSKIN A.A., GONCHARO E., GRYAZNOV N.S.: Thermal properties of coals in plastic state. Coke Chem. USSR 9(1972), 3-5.
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  • [17] PARKER W.J., JENKINS R.J., BUTLER C.P., ABBOTT G.L.: Flash method of determining thermal diffusivity, heat capacity, and thermal conductivity. J. Appl. Phys. 32(1961), 1679.
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Uwagi
EN
This work was financially supported by the National Science Centre (Poland) under grant No. N N512 457940. The support is gratefully acknowledged.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-3f78128d-3de5-40ab-a87d-ec572b177f1c
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