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

Kód výsledku v 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>

Výsledek na webu

<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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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10307 - Acoustics

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Studentská tvůrčí činnost 2017 - sborník konference

ISBN

978-80-01-06143-5

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

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Název nakladatele

ČVUT v Praze - Fakulta strojní

Místo vydání

Praha

Místo konání akce

Praha

Datum konání akce

20. 4. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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