Development of lean premixed low-swirl burner for low NO{sub x} practical application

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Description

Laboratory experiments have been performed to evaluate the performance of a premixed low-swirl burner (LSB) in configurations that simulate commercial heating appliances. Laser diagnostics were used to investigate changes in flame stabilization mechanism, flowfield, and flame stability when the LSB flame was confined within quartz cylinders of various diameters and end constrictions. The LSB adapted well to enclosures without generating flame oscillations and the stabilization mechanism remained unchanged. The feasibility of using the LSB as a low NO{sub x} commercial burner has also been verified in a laboratory test station that simulates the operation of a water heater. It was ... continued below

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22 pages

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Yegian, D. T. & Cheng, R. K. July 7, 1999.

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Description

Laboratory experiments have been performed to evaluate the performance of a premixed low-swirl burner (LSB) in configurations that simulate commercial heating appliances. Laser diagnostics were used to investigate changes in flame stabilization mechanism, flowfield, and flame stability when the LSB flame was confined within quartz cylinders of various diameters and end constrictions. The LSB adapted well to enclosures without generating flame oscillations and the stabilization mechanism remained unchanged. The feasibility of using the LSB as a low NO{sub x} commercial burner has also been verified in a laboratory test station that simulates the operation of a water heater. It was determined that the LSB can generate NO{sub x} emissions < 10 ppm (at 3% O{sub 2}) without significant effect on the thermal efficiency of the conventional system. The study has demonstrated that the lean premixed LSB has commercial potential for use as a simple economical and versatile burner for many low emission gas appliances.

Physical Description

22 pages

Notes

OSTI as DE00838949

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  • Journal Name: Combustion Science and Technology; Journal Volume: 139; Other Information: Submitted to Combustion Science and Technology: Volume 139; Journal Publication Date: 1998

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  • Report No.: LBNL--43674
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 838949
  • Archival Resource Key: ark:/67531/metadc787052

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  • July 7, 1999

Added to The UNT Digital Library

  • Dec. 3, 2015, 9:30 a.m.

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  • July 26, 2016, 3:24 p.m.

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Yegian, D. T. & Cheng, R. K. Development of lean premixed low-swirl burner for low NO{sub x} practical application, article, July 7, 1999; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc787052/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.