Low-frequency pulsation from a package boiler

Research output: Contribution to conferencePaper

Abstract

A high-amplitude, low-frequency pulsation was emitted by a package boiler under certain operating conditions. Preliminary testing showed that the pulsation was at approximately 9 Hz and was only present when the firing rate of the boiler decreased below approximately 50% to 70% capacity. A series of dedicated measurements was made to identify the source of the pulsation, including measurements with microphones, accelerometers, and pressure transducers. Ultimately, the test team concluded that a thermoacoustic resonance was causing a feedback loop that linked the flame output of the boiler to the acoustic cavity in the furnace and duct system. A stack damper was installed to modify the acoustic properties of the duct system, and the pulsation was mitigated.

Original languageEnglish (US)
StatePublished - Jan 1 2018
Event47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018 - Chicago, United States
Duration: Aug 26 2018Aug 29 2018

Other

Other47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018
CountryUnited States
CityChicago
Period8/26/188/29/18

Fingerprint

boilers
low frequencies
ducts
transducers
acoustic properties
dampers
accelerometers
pressure sensors
microphones
furnaces
flames
cavities
acoustics
output

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

Cite this

Dare, T. P., Beck, B. S., Bonness, W. K., Rufener, S., & Flynn, T. (2018). Low-frequency pulsation from a package boiler. Paper presented at 47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018, Chicago, United States.
Dare, Tyler Patrick ; Beck, Benjamin S. ; Bonness, William Kris ; Rufener, Suzana ; Flynn, Thomas. / Low-frequency pulsation from a package boiler. Paper presented at 47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018, Chicago, United States.
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Dare, TP, Beck, BS, Bonness, WK, Rufener, S & Flynn, T 2018, 'Low-frequency pulsation from a package boiler' Paper presented at 47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018, Chicago, United States, 8/26/18 - 8/29/18, .

Low-frequency pulsation from a package boiler. / Dare, Tyler Patrick; Beck, Benjamin S.; Bonness, William Kris; Rufener, Suzana; Flynn, Thomas.

2018. Paper presented at 47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018, Chicago, United States.

Research output: Contribution to conferencePaper

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AU - Dare, Tyler Patrick

AU - Beck, Benjamin S.

AU - Bonness, William Kris

AU - Rufener, Suzana

AU - Flynn, Thomas

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AB - A high-amplitude, low-frequency pulsation was emitted by a package boiler under certain operating conditions. Preliminary testing showed that the pulsation was at approximately 9 Hz and was only present when the firing rate of the boiler decreased below approximately 50% to 70% capacity. A series of dedicated measurements was made to identify the source of the pulsation, including measurements with microphones, accelerometers, and pressure transducers. Ultimately, the test team concluded that a thermoacoustic resonance was causing a feedback loop that linked the flame output of the boiler to the acoustic cavity in the furnace and duct system. A stack damper was installed to modify the acoustic properties of the duct system, and the pulsation was mitigated.

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Dare TP, Beck BS, Bonness WK, Rufener S, Flynn T. Low-frequency pulsation from a package boiler. 2018. Paper presented at 47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018, Chicago, United States.