MONITORING POWER PLANT EFFICIENCY USING THE MICROWAVE-EXCITED PHOTOACOUSTIC EFFECT TO MEASURE UNBURNED CARBON

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Description

Three test instruments are being evaluated to determine the feasibility of using photoacoustic technology for measuring unburned carbon in fly ash. The first test instrument is a single microwave frequency system previously constructed to measure photo-acoustic signals in an off-line configuration. This system was assembled and used to test parameters thought important to photo-acoustic signal output. A standard modulation frequency was chosen based upon signal to noise data gained from experimentation. Testing in the sixth quarter focused on initial testing for a magnetic photo-acoustic effect, loss tests and photo-acoustic tests on coal samples, and extending the testing range for the ... continued below

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14 pages

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Brown, Robert C. & Weber, Robert J. April 1, 2003.

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Description

Three test instruments are being evaluated to determine the feasibility of using photoacoustic technology for measuring unburned carbon in fly ash. The first test instrument is a single microwave frequency system previously constructed to measure photo-acoustic signals in an off-line configuration. This system was assembled and used to test parameters thought important to photo-acoustic signal output. A standard modulation frequency was chosen based upon signal to noise data gained from experimentation. Testing in the sixth quarter focused on initial testing for a magnetic photo-acoustic effect, loss tests and photo-acoustic tests on coal samples, and extending the testing range for the photo-acoustic effect over the octave of 900 MHz to 1800 MHz. Previous testing on this project was done at 1 GHz. In parallel with the photo-acoustic testing, some preliminary design considerations were investigated for the on-line monitor to be fabricated and testing in phase three of this project.

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14 pages

Notes

OSTI as DE00822230

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  • Other Information: PBD: 1 Apr 2003

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  • Report No.: NONE
  • Grant Number: FC26-01NT41220
  • DOI: 10.2172/822230 | External Link
  • Office of Scientific & Technical Information Report Number: 822230
  • Archival Resource Key: ark:/67531/metadc780925

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • April 1, 2003

Added to The UNT Digital Library

  • Dec. 3, 2015, 9:30 a.m.

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  • Jan. 3, 2017, 12:54 p.m.

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Brown, Robert C. & Weber, Robert J. MONITORING POWER PLANT EFFICIENCY USING THE MICROWAVE-EXCITED PHOTOACOUSTIC EFFECT TO MEASURE UNBURNED CARBON, report, April 1, 2003; United States. (digital.library.unt.edu/ark:/67531/metadc780925/: accessed November 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.