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Article: Experimental study and control of noise from a window-type ventilation fan

TitleExperimental study and control of noise from a window-type ventilation fan
Authors
Issue Date2009
PublisherInstitute of Noise Control Engineering. The Journal's web site is located at http://www.inceusa.org/publications/ncej
Citation
Noise Control Engineering Journal, 2009, v. 57 n. 4, p. 335-340 How to Cite?
AbstractNoise radiated by ventilation fans is an issue closely related to product competitiveness. The purpose of this experimental study is to identify the noise sources and to seek effective methods of noise reduction. The acoustic directivity and source locations are measured for the original fan and the fans modified for the inlet and exit conditions. Thrust noise dominates the radiated sound. Two main source mechanisms are found to be the unsteady flow caused by nonuniformity of the exit duct and tip leakage flow. Both the inlet and exit modifications are effective in reducing the total noise by about 5 dB and the tonal noise by about 8 dB. © 2009 Institute of Noise Control Engineering.
Persistent Identifierhttp://hdl.handle.net/10722/124837
ISSN
2015 Impact Factor: 0.313
2015 SCImago Journal Rankings: 0.498
References

 

DC FieldValueLanguage
dc.contributor.authorHuango, Jen_HK
dc.contributor.authorMa, Xen_HK
dc.contributor.authorHuang, Len_HK
dc.date.accessioned2010-10-31T10:56:58Z-
dc.date.available2010-10-31T10:56:58Z-
dc.date.issued2009en_HK
dc.identifier.citationNoise Control Engineering Journal, 2009, v. 57 n. 4, p. 335-340en_HK
dc.identifier.issn0736-2501en_HK
dc.identifier.urihttp://hdl.handle.net/10722/124837-
dc.description.abstractNoise radiated by ventilation fans is an issue closely related to product competitiveness. The purpose of this experimental study is to identify the noise sources and to seek effective methods of noise reduction. The acoustic directivity and source locations are measured for the original fan and the fans modified for the inlet and exit conditions. Thrust noise dominates the radiated sound. Two main source mechanisms are found to be the unsteady flow caused by nonuniformity of the exit duct and tip leakage flow. Both the inlet and exit modifications are effective in reducing the total noise by about 5 dB and the tonal noise by about 8 dB. © 2009 Institute of Noise Control Engineering.en_HK
dc.languageengen_HK
dc.publisherInstitute of Noise Control Engineering. The Journal's web site is located at http://www.inceusa.org/publications/ncejen_HK
dc.relation.ispartofNoise Control Engineering Journalen_HK
dc.titleExperimental study and control of noise from a window-type ventilation fanen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0736-2501&volume=57&issue=4&spage=335&epage=340&date=2009&atitle=Experimental+study+and+control+of+noise+from+a+window-type+ventilation+fan-
dc.identifier.emailHuang, L:lixi@hku.hken_HK
dc.identifier.authorityHuang, L=rp00119en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.3397/1.3151918en_HK
dc.identifier.scopuseid_2-s2.0-77249103541en_HK
dc.identifier.hkuros171597en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77249103541&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume57en_HK
dc.identifier.issue4en_HK
dc.identifier.spage335en_HK
dc.identifier.epage340en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridHuango, J=35737241100en_HK
dc.identifier.scopusauthoridMa, X=35737550800en_HK
dc.identifier.scopusauthoridHuang, L=7404735514en_HK

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