Title :
Effects of venturi length on combustion characteristics of inshot burners
Author :
Rao, Ashwin V. ; Gollahalli, S.R.
Author_Institution :
Sch. of Aerosp. & Mech. Eng., Oklahoma Univ., Norman, OK, USA
Abstract :
An experimental study of the changes caused in the flame structure and pollutant emission characteristics by the modifications to the primary-air venturi of an inshot burner used in residential natural gas furnaces is presented. The venturi modification examined in this study are the shape of the venturi inlet and the venturi length. Modified venturis with curved inlets produce higher primary-air entrainment and slightly smaller (by 5 to 10%) emission indices of NOx and CO than the standard parallel side venturi. However, the changes in the venturi length for the modified geometry do not result in significant further changes
Keywords :
air pollution measurement; chemically reactive flow; combustion; flames; furnaces; jets; CO; NO; NOx; combustion characteristics; emission indices; flame structure; inshot burners; modified geometry; pollutant emission characteristics; primary-air entrainment; primary-air venturi; residential natural gas furnaces; venturi inlet; venturi length; Aerospace engineering; Combustion; Fires; Fluid dynamics; Fuels; Geometry; Glass; Mechanical engineering; Natural gas; Windows;
Conference_Titel :
Energy Conversion Engineering Conference, 1996. IECEC 96., Proceedings of the 31st Intersociety
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-3547-3
DOI :
10.1109/IECEC.1996.561159
