Study of the Effects of Ambient Conditions Upon the Performance of Fan Powered, Infrared, Natural Gas Burners

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Fourier transform infrared spectroscopy is a simple, fast, reliable and nondestructive analytical method. By using the method developed in Clark Atlanta University, consistent and reliable infrared spectral results can be obtained. An accurate radiant energy can be calculated from these infrared spectra by using a blackbody as the calibration standards. By means of the specially-designed-and-lab-made sampling inlet and the Horiba gas analyzers, the compositions of CO{sub 2}, CO, UCH, NOx and O{sub 2} etc. from the combustion exhaust gases have been on-line accurately analyzed. The commercial natural gas IR burner performed differently in the different conditions. For the methane-air combustion, ... continued below

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46 p.

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Creator: Unknown. March 31, 1997.

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Fourier transform infrared spectroscopy is a simple, fast, reliable and nondestructive analytical method. By using the method developed in Clark Atlanta University, consistent and reliable infrared spectral results can be obtained. An accurate radiant energy can be calculated from these infrared spectra by using a blackbody as the calibration standards. By means of the specially-designed-and-lab-made sampling inlet and the Horiba gas analyzers, the compositions of CO{sub 2}, CO, UCH, NOx and O{sub 2} etc. from the combustion exhaust gases have been on-line accurately analyzed. The commercial natural gas IR burner performed differently in the different conditions. For the methane-air combustion, at the equivalence ratio {Phi} = 1, the IR burner produced its maximum radiation efficiency, {approximately}31.4%, and the concentration of CO{sub 2} reached its maximum value, {approximately}10.7%. In the fuel-lean region, the O{sub 2} concentration in the emission gas decreased proportionally as {Phi} increased, but the concentrations of CO and UHC were kept in a couple of hundred ppm ranges. In the fuel-rich region, the O{sub 2} concentration was kept as a constant, {approximately}0.2%, but the CO and UHC concentrations were quickly jumped to thousands ppm or more as {Phi} further increased. The NOx formation was mainly dependent on the combustion temperature, and reached its maximum, {approximately}8 ppm, at {Phi}= {approximately}1. Because of the uniform temperature distribution, the IR burner produced lower NOx than traditional gas burners. Nitrogen is a non-combustible gas. It worked only as diluent for the combustion, reducing the radiant efficiency. Propane has a higher molar combustion enthalpy. It produced a higher combustion temperature and NOx, while maintaining similar radiant efficiency. Hydrogen has a lower combustion activation energy. It enhanced the radiant efficiency, and did not significantly affect the production of NOx, CO{sub 2} and CO.

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46 p.

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OSTI as DE00003823

Medium: P; Size: 46 pages

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  • Other Information: PBD: 31 Mar 1997

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  • Report No.: DE--FG22-94MT94011--11
  • Grant Number: FG22-94MT94011
  • DOI: 10.2172/3823 | External Link
  • Office of Scientific & Technical Information Report Number: 3823
  • Archival Resource Key: ark:/67531/metadc676929

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Office of Scientific & Technical Information Technical Reports

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

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  • March 31, 1997

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • April 12, 2017, 6:50 p.m.

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Study of the Effects of Ambient Conditions Upon the Performance of Fan Powered, Infrared, Natural Gas Burners, report, March 31, 1997; Morgantown, West Virginia. (digital.library.unt.edu/ark:/67531/metadc676929/: accessed December 12, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.