Burner/furnace systems are generally sensitive to thermoacoustic vibration due to the presence of large temperature differentials between the cold burner air and the hot furnace gases. The systems are predicted to vibrate when the temperature ratio between the hot and cold components reaches a critical value and when the acoustic mode shape of the combined system develops into a Rijke or a Sondhauss tube type. Original full-scale large-utility steam generator systems which vibrated in operation and modified systems resisting the vibration are described and explained. Guidelines for designing systems resistant to thermoacoustic vibration are also given to aid the designers.

Issue Section:
Technical Papers
Keywords:
furnaces, vibrations, pressure vessels, thermoacoustics, vibration control
Topics:
Acoustics, Furnaces, Vibration, Waves, Stability, Oscillations, Mode shapes
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Copyright © 2002
 by ASME
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