Scaling the weak-swirl burner from 15 kW to 1 MW

PDF Version Also Available for Download.

Description

With the passage of SCAQMD 1146.2, low NO{sub x} regulations will be enforced for new water heaters and boilers from 22 to 585 kW starting January 1, 2000; less than two years away. This has given an added impetus to develop a burner capable of producing NO{sub x} < 30 ppm and CO < 400 ppm without substantial manufacturing costs or complexity. Developed at the Berkeley Lab, the Weak-Swirl Burner (WSB) operates in the lean premixed combustion mode over a wide firing and equivalence ratio range. This work investigated scaling issues (e.g. swirl rates and stability limits) of the WSB ... continued below

Physical Description

15 p.

Creation Information

Yegian, D.T.; Cheng, R.K.; Hack, R.L.; Miyasato, M.M.; Chang, A. & Samuelsen, G.S. March 1, 1998.

Context

This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 21 times . More information about this article can be viewed below.

Who

People and organizations associated with either the creation of this article or its content.

Authors

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this article. Follow the links below to find similar items on the Digital Library.

Description

With the passage of SCAQMD 1146.2, low NO{sub x} regulations will be enforced for new water heaters and boilers from 22 to 585 kW starting January 1, 2000; less than two years away. This has given an added impetus to develop a burner capable of producing NO{sub x} < 30 ppm and CO < 400 ppm without substantial manufacturing costs or complexity. Developed at the Berkeley Lab, the Weak-Swirl Burner (WSB) operates in the lean premixed combustion mode over a wide firing and equivalence ratio range. This work investigated scaling issues (e.g. swirl rates and stability limits) of the WSB when fired at higher rates useful to industry. Three test configurations which varied the ratio of furnace area to burner area were utilized to understand the effects of burner chamber coupling on emissions and stability. Preliminary tests from 12 to 18 kW of a WSB in a commercial heat exchanger were undertaken at LBNL, with further testing from 18 to 105 kW completed at UCI Combustion Laboratory in an octagonal enclosure. After scaling the small (5 cm diameter) to a 10 cm WSB, the larger burner was fired from 150 to 600 kW within a 1.2 MW furnace simulator at UCICL. Test results demonstrate that NO{sub x} emissions (15 ppm at 3% O{sub 2} at equivalence ratio {phi} = 0.80) were invariant with firing rate and chamber/burner ratio. However, the data indicates that CO and UHC are dependent on system parameters, such that a minimum firing rate exists below which CO and UHC rise from lower limits of 25 ppm and 0 ppm respectively.

Physical Description

15 p.

Notes

OSTI as DE98058252

Source

  • Western States Section/the Combustion Institute 1998 spring meeting, Berkeley, CA (United States), 23-24 Mar 1998

Language

Item Type

Identifier

Unique identifying numbers for this article in the Digital Library or other systems.

  • Other: DE98058252
  • Report No.: LBNL--41559
  • Report No.: CONF-9803101--
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 674939
  • Archival Resource Key: ark:/67531/metadc711461

Collections

This article is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

What responsibilities do I have when using this article?

When

Dates and time periods associated with this article.

Creation Date

  • March 1, 1998

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

Description Last Updated

  • Jan. 19, 2018, 1:58 p.m.

Usage Statistics

When was this article last used?

Yesterday: 0
Past 30 days: 2
Total Uses: 21

Interact With This Article

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Yegian, D.T.; Cheng, R.K.; Hack, R.L.; Miyasato, M.M.; Chang, A. & Samuelsen, G.S. Scaling the weak-swirl burner from 15 kW to 1 MW, article, March 1, 1998; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc711461/: accessed December 9, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.