Mechanical swirler for a low-NO{sub x}, weak-swirl burner
Abstract
Disclosed is a mechanical swirler for generating diverging flow in lean premixed fuel burners. The swirler of the present invention includes a central passage with an entrance for accepting a feed gas, a flow balancing insert that introduces additional pressure drop beyond that occurring in the central passage in the absence of the flow balancing insert, and an exit aligned to direct the feed gas into a combustor. The swirler also has an annular passage about the central passage and including one or more vanes oriented to impart angular momentum to feed gas exiting the annular passage. The diverging flow generated by the swirler stabilizes lean combustion thus allowing for lower production of pollutants, particularly oxides of nitrogen. 16 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Univ. of California (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 335456
- Patent Number(s):
- 5879148
- Application Number:
- PAN: 8-837,377
- Assignee:
- Univ. of California, Oakland, CA (United States)
- DOE Contract Number:
- AC03-76SF00098
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 9 Mar 1999
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; 54 ENVIRONMENTAL SCIENCES; GAS BURNERS; FLOW REGULATORS; VORTEX FLOW; DESIGN; NITROGEN OXIDES; AIR POLLUTION ABATEMENT
Citation Formats
Cheng, R K, and Yegian, D T. Mechanical swirler for a low-NO{sub x}, weak-swirl burner. United States: N. p., 1999.
Web.
Cheng, R K, & Yegian, D T. Mechanical swirler for a low-NO{sub x}, weak-swirl burner. United States.
Cheng, R K, and Yegian, D T. Tue .
"Mechanical swirler for a low-NO{sub x}, weak-swirl burner". United States.
@article{osti_335456,
title = {Mechanical swirler for a low-NO{sub x}, weak-swirl burner},
author = {Cheng, R K and Yegian, D T},
abstractNote = {Disclosed is a mechanical swirler for generating diverging flow in lean premixed fuel burners. The swirler of the present invention includes a central passage with an entrance for accepting a feed gas, a flow balancing insert that introduces additional pressure drop beyond that occurring in the central passage in the absence of the flow balancing insert, and an exit aligned to direct the feed gas into a combustor. The swirler also has an annular passage about the central passage and including one or more vanes oriented to impart angular momentum to feed gas exiting the annular passage. The diverging flow generated by the swirler stabilizes lean combustion thus allowing for lower production of pollutants, particularly oxides of nitrogen. 16 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {3}
}
Works referenced in this record:
Measurement of Scalar Dissipation in Premixed Flames
journal, March 1996
- O'Young, F.; Bilger, R. W.
- Combustion Science and Technology, Vol. 113, Issue 1
Development of a vane-swirler for use in a low NO{sub x} weak-swirl burner
report, October 1996
- Yegian, D. T.; Cheng, R. K.