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Lech Szecówka
Lech Szecówka
Technical University of Czestochowa
Technical University of Czestochowa

Articles

Metallurgy
  • Date submitted
    2006-08-06
  • Date accepted
    2006-10-19
  • Date published
    2007-02-01

Calculations of the radiation heat conduction coefficient in the bed of rods

Article preview

Very often in many metallurgical processes, porous metal charge is heated. Such charge can be coils of wire, bundles of bars, pipes or any profiles, as well as many other small elements heated on a mass scale. Determining the optimum heating conditions for this kind of charge requires knowledge of its thermal properties. This paper presents a methodology for calculating the thermal properties of porous charge based on an appropriate mathematical model of heat transfer.

How to cite: Kawka D., Wyczółkowski R., Szecówka L. Calculations of the radiation heat conduction coefficient in the bed of rods // Journal of Mining Institute. 2007. Vol. № 2 170. p. 156-159.
ECOLOGY AND ENVIRONMENT
  • Date submitted
    2006-08-03
  • Date accepted
    2006-10-07
  • Date published
    2007-02-01

Environmental effect of air/fuel staging and flue gas recirculation on NOx formation - experimental and numerical analysis

Article preview

This paper includes both experimental and modeling studies of nitrogen oxides abatement. The tests were carried out in a quartz combustion chamber using laboratory equipment that allows measuring all thermal and chemical parameters of the process. An experimental test rig was constructed to determine the effect of the following "primary methods" on NOx concentration reduction: air staging, afterburning and flue gas recirculation. The effect of simultaneous use of the primary methods on NOx reduction was also studied. An obligatory element of experimental studies is numerical modeling of combination processes.

How to cite: Monika P., Szecówka L. Environmental effect of air/fuel staging and flue gas recirculation on NOx formation - experimental and numerical analysis // Journal of Mining Institute. 2007. Vol. № 2 170. p. 250-253.