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RESEARCH PAPERS

Acoustical Resonance of Tube-in-Shell Units

[+] Author and Article Information
C. Smoglie

Entwicklung für Wärmetechnik, Abteilung KWS 31, ABB Kraftwerke AG, CH-5401 Baden, Switzerland

J. Vib. Acoust 118(3), 299-305 (Jul 01, 1996) (7 pages) doi:10.1115/1.2888181 History: Received January 01, 1994; Online February 26, 2008

Abstract

Severe noise emission due to acoustical resonance can occur in conduits or chambers containing large tube arrays subjected to fluid cross flow, as is the case in many heat exchangers and steam generators. A theoretical basis obtained from updated literature is used to assess excitation and damping forces. Whether acoustical resonance is to be expected or not depends upon the relative magnitude of both forces. A calculation method is proposed for the prediction of acoustical resonance and its frequency. The method has been checked by using geometrical and experimental data for Moisture Separator Reheaters of two different power plants. Results show reasonable agreement between predictions and measurements. Two methods are suggested for the suppression of existing resonance.

Copyright © 1996 by The American Society of Mechanical Engineers
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