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

Volume

4

fYear

1996

fDate

11-16 Aug 1996

Firstpage

2203

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 NO_x 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; NO_x; 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;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Engineering Conference, 1996. IECEC 96., Proceedings of the 31st Intersociety

Conference_Location

Washington, DC

ISSN

1089-3547

Print_ISBN

0-7803-3547-3

Type

conf

DOI

10.1109/IECEC.1996.561159

Filename

561159