Mechanical swirler for a low-NO{sub x}, weak-swirl burner
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.
- Research Organization:
- Univ. of California (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC03-76SF00098
- Assignee:
- Univ. of California, Oakland, CA (United States)
- Patent Number(s):
- US 5,879,148/A/
- Application Number:
- PAN: 8-837,377
- OSTI ID:
- 335456
- Resource Relation:
- Other Information: PBD: 9 Mar 1999
- Country of Publication:
- United States
- Language:
- English
Measurement of Scalar Dissipation in Premixed Flames
|
journal | March 1996 |
| Development of a vane-swirler for use in a low NO{sub x} weak-swirl burner | report | October 1996 |
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