This paper presents the experimental results obtained comparing different natural gas injection typologies in a swirl burner. Particularly, both co-axial and radial (i.e.: transverse) injection, with respect to the rotating air stream, have been characterised through temperature measurements by thin thermocouple and pollutant emissions measurement at the exhaust. The results put into evidence that in the region close to the reactants efflux the fuel injection procedure plays an important role for flame stabilization and development in the primary mixing zone of the device. Consequently, the general behaviour of the two different injectors (mainly as for pollutant emissions) seems to reflect the generation of two different flame typologies: a partially premixed one for the radial injector and a purely diffusive flame for the axial one.
Analysis of the environmental impact of a swirl burner: natural gas feeding
COGHE, ALDO SEBASTIANO;COZZI, FABIO;OLIVANI, ANDREA;SOLERO, GIULIO ANGELO GUIDO
2005-01-01
Abstract
This paper presents the experimental results obtained comparing different natural gas injection typologies in a swirl burner. Particularly, both co-axial and radial (i.e.: transverse) injection, with respect to the rotating air stream, have been characterised through temperature measurements by thin thermocouple and pollutant emissions measurement at the exhaust. The results put into evidence that in the region close to the reactants efflux the fuel injection procedure plays an important role for flame stabilization and development in the primary mixing zone of the device. Consequently, the general behaviour of the two different injectors (mainly as for pollutant emissions) seems to reflect the generation of two different flame typologies: a partially premixed one for the radial injector and a purely diffusive flame for the axial one.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
