Effect of burner design parameters on thermal flame characteristics

الملخص EN

The effects of changing the designed parameters of the atomizer spin-chamber and combustion air swirler on the thermal flame characteristics are experimentally investigated.

The diameter of the atomizer spin-chamber is changed from 3 to 12 mm while the depth is changed from 4 to 12 mm in turn.

Also, the hub diameter ratio of the combustion air swirler is changed from o.44 to 0.81 while the vanes angle is changed from 30o to 60o in turn.

The experimental runs were carried out within a horizontal water-cooled combustor tube.

Both of the fuel and combustion air streams were co-swirled keeping the air-fuel ratio constant.

Very stable flames are formed.

Flame stability limits, gas temperatures distribution, sectional average gas temperatures along the combustor tube and overall heat transfer rate to the combustor wall are determined for the different operating conditions.