Strong acoustic resonance with acoustic pressures reaching up to developed in the boiler bank of a package boiler at full load. At first, the resonance developed at a lower frequency in the downstream portion of the tube bank and was suppressed by an acoustic baffle covering the downstream section of the flow channel. After about one year of operation, a second resonant condition developed. Tests confirmed that, again, a strong resonant condition developed at a higher frequency in the unbaffled upstream portion of the flow channel. Computer analysis confirmed that the initial resonance occurred at the first acoustic mode of the flow channel while the follow-up resonance occurred at the second mode of the flow channel expressed as a first-mode resonance in a different (upstream) location. An extension of the acoustic baffle covering the entire depth of the tube bank eliminated the vibration. This paper gives a description of the problem and summarizes the theoretical and experimental results substantiating the findings.
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November 2007
Technical Briefs
Acoustic Resonance in a Package Boiler and Its Solution—A Case Study
Frantisek L. Eisinger,
Frantisek L. Eisinger
Fellow ASME
Foster Wheeler North America, Inc.
, Perryville Corporate Park, Clinton, NJ 08809
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Robert E. Sullivan
Robert E. Sullivan
Mem. ASME
Foster Wheeler North America, Inc.
, Perryville Corporate Park, Clinton, NJ 08809
Search for other works by this author on:
Frantisek L. Eisinger
Fellow ASME
Foster Wheeler North America, Inc.
, Perryville Corporate Park, Clinton, NJ 08809
Robert E. Sullivan
Mem. ASME
Foster Wheeler North America, Inc.
, Perryville Corporate Park, Clinton, NJ 08809J. Pressure Vessel Technol. Nov 2007, 129(4): 759-762 (4 pages)
Published Online: August 9, 2006
Article history
Received:
January 9, 2006
Revised:
August 9, 2006
Citation
Eisinger, F. L., and Sullivan, R. E. (August 9, 2006). "Acoustic Resonance in a Package Boiler and Its Solution—A Case Study." ASME. J. Pressure Vessel Technol. November 2007; 129(4): 759–762. https://doi.org/10.1115/1.2767369
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