The evaluation of noise emitted by flow around the blade of HVAC system

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F17%3A00312867" target="_blank" >RIV/68407700:21220/17:00312867 - isvavai.cz</a>
Result on the web
<a href="http://stc.fs.cvut.cz/pdf17/6593.pdf?_=1491768093" target="_blank" >http://stc.fs.cvut.cz/pdf17/6593.pdf?_=1491768093</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
The evaluation of noise emitted by flow around the blade of HVAC system
Original language description
The paper deals with aerodynamic noise generated at low Mach numbers by flow over a blade grill commonly used as a terminal dif-fuser of air-distribution systems. The aerodynamic noise of HVAC (Heating, Ventilating and Air Conditioning) systems is undesira-ble not only in residential buildings, office buildings, hospitals but especially in spaces with high acoustic demands such as TV or recording studios. Total sound is not the only one criterion which is evaluated by acoustics. The spectrum of the noise is significant criterion particularly the existence of discrete tones at acoustic spectra. The main challenge of this experiment was to build an experi-mental test stand with a requirement of low noise from the fan. The goal of the paper is to compare the acoustic spectra of sound pow-er level, vibration of the blade generated by flow and the velocity fluctuation of turbulent flow behind the blade. The experiment is a part of the wider research into aerodynamic noise.
Czech name
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Czech description
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Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Studentská tvůrčí činnost 2017 - sborník konference
ISBN
978-80-01-06143-5
ISSN
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e-ISSN
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Number of pages
4
Pages from-to
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Publisher name
ČVUT v Praze - Fakulta strojní
Place of publication
Praha
Event location
Praha
Event date
Apr 20, 2017
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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