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Self-Exciting Oscillation in Gas Fired Appliance
Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
2007 (English)Independent thesis Advanced level (degree of Master (One Year))Student thesis
Abstract [en]

Self exciting oscillation in gas fired appliances leads to abnormal combustion noise which is focused in this work. For studying this phenomena and modeling abnormal combustion noise a simple hand made instrument was made. Then the property of fundamental parts of unit is studied and also some practical methods for reducing the loud noise are given. These methods are based on modification of the fundamental parts of unit. The mathematical model of this phenomenon is illustrated and also the stability criteria for the unit based on this model is given. Then the effect of changing excitation point in this phenomenon is studied and finally the experimental stability diagram based on modification on fuel/air ratio is given.

Place, publisher, year, edition, pages
2007. , 43 p.
Keyword [en]
Combustion Oscillation, Combustion Chamber, Auto power spectra, Excitation point, Feedback loop, Impedance, Impulse response, Instability, Noise, Natural Resonance Frequency, Self exciting, Shape mode, Stability, Time history, Transfer function, Vicious circle.
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:bth-4164Local ID: oai:bth.se:arkivex0CC777C0CC01EA74C12572C700463031OAI: oai:DiVA.org:bth-4164DiVA: diva2:831489
Uppsok
Technology
Supervisors
Available from: 2015-04-22 Created: 2007-04-24 Last updated: 2015-06-30Bibliographically approved

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fulltext(757 kB)48 downloads
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Mechanical Engineering

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf