NOISE GENERATED BY AIR FLOWING FROM SMALL HOLES

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F10%3A00171190" target="_blank" >RIV/68407700:21220/10:00171190 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
NOISE GENERATED BY AIR FLOWING FROM SMALL HOLES
Original language description
The control of air flow through HVAC systems is usually executed by throttling. The most frequently used control elements are control dampers. When closing these elements reduce the free flow cross-section and increase pressure losses. As a result the flow rate increases in the reduced cross-section and consequently, in most control elements, the acoustic energy generated into the environment grows very remarkably. This is caused by the very limited flow cross-section which can be qualified as a slot, i.e. an opening with a markedly smaller width compared with its length. The main topic of this paper is to present the results of experimental measurements and analyses of the causes of generation of acoustic energy in small holes and/or slots with a variable width. The measured levels of the sound power for individual types of slots are related with non-dimensional similarity criteria.
Czech name
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Czech description
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Type
D - Article in proceedings
CEP classification
JE - Non-nuclear power engineering, energy consumption and utilization
OECD FORD branch
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Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Seventeenth International Congress on Sound and Vibration (ICSV17)
ISBN
978-1-61782-255-1
ISSN
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e-ISSN
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Number of pages
8
Pages from-to
1150-1157
Publisher name
IIAV - International Institute of Acoustics and Vibration
Place of publication
Cairo
Event location
CAIRO
Event date
Jul 18, 2010
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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