Abstract

A study dealing with the opacity and radiating power of smoke produced during flame combustion of heating oil is conducted. A quantity combining the smoke extinction coefficient, fuel-mass-loss rate and smoke volume flow rate is defined. This quantity, called specific extinction area, is shown to be conserved when varying combustion parameters. Its dependence with respect to radiation wavelength is derived through extinction measurements and compared to the theoretical evolution. Finally, smoke particles are characterized by size and concentration and the possible changes in size and structure of particles, in relation to modifications in environmental conditions, are discussed.

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