Performance of multiple micro-perforated panels in a duct

Y. Liu; Yat Sze Choy; Y. K. Chiang

Performance of multiple micro-perforated panels in a duct

Y. Liu, Yat Sze Choy, Y. K. Chiang

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

2 Citations (Scopus)

Abstract

Generalized formulation is developed analytically to calculate the transmission loss performance of a silencer by using multiple micro-perforate panel (MPP) array silencers in ventilation duct system. The device, based on single MPP design, consists of different expansion chambers with the side-branch cavities covered by micro-perforate panels of different properties. The theoretical model can also be simplified to evaluate the performance for normal plate silencer. With a preliminary result of two normal plates, it shows that the plate silencer can offer a wide stop band of 3.5 from low to medium frequency range when the length ratio is 1 to 4. Compared with same total length of a single plate, the stop band is improved by 25%. For the MPP silencer under similar condition, the stop band is also increased by 16%. Apart from the considerate increment of stop band, the bending stiffness requirement is also released by 35% and 40% respectively.

Original language	English
Title of host publication	INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering
Subtitle of host publication	Improving the World Through Noise Control
Publisher	Australian Acoustical Society
ISBN (Electronic)	9780909882037
Publication status	Published - 1 Jan 2014
Event	43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014 - Melbourne, Australia Duration: 16 Nov 2014 → 19 Nov 2014

Conference

Conference	43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014
Country/Territory	Australia
City	Melbourne
Period	16/11/14 → 19/11/14

Keywords

Multiple panel
Sound reflection
Transmission loss

ASJC Scopus subject areas

Acoustics and Ultrasonics

Cite this

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title = "Performance of multiple micro-perforated panels in a duct",

abstract = "Generalized formulation is developed analytically to calculate the transmission loss performance of a silencer by using multiple micro-perforate panel (MPP) array silencers in ventilation duct system. The device, based on single MPP design, consists of different expansion chambers with the side-branch cavities covered by micro-perforate panels of different properties. The theoretical model can also be simplified to evaluate the performance for normal plate silencer. With a preliminary result of two normal plates, it shows that the plate silencer can offer a wide stop band of 3.5 from low to medium frequency range when the length ratio is 1 to 4. Compared with same total length of a single plate, the stop band is improved by 25%. For the MPP silencer under similar condition, the stop band is also increased by 16%. Apart from the considerate increment of stop band, the bending stiffness requirement is also released by 35% and 40% respectively.",

keywords = "Multiple panel, Sound reflection, Transmission loss",

author = "Y. Liu and Choy, {Yat Sze} and Chiang, {Y. K.}",

year = "2014",

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day = "1",

language = "English",

booktitle = "INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering",

publisher = "Australian Acoustical Society",

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note = "43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014 ; Conference date: 16-11-2014 Through 19-11-2014",

}

Liu, Y, Choy, YS & Chiang, YK 2014, Performance of multiple micro-perforated panels in a duct. in INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control. Australian Acoustical Society, 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014, Melbourne, Australia, 16/11/14.

Performance of multiple micro-perforated panels in a duct. / Liu, Y.; Choy, Yat Sze; Chiang, Y. K.
INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control. Australian Acoustical Society, 2014.

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

TY - GEN

T1 - Performance of multiple micro-perforated panels in a duct

AU - Liu, Y.

AU - Choy, Yat Sze

AU - Chiang, Y. K.

PY - 2014/1/1

Y1 - 2014/1/1

N2 - Generalized formulation is developed analytically to calculate the transmission loss performance of a silencer by using multiple micro-perforate panel (MPP) array silencers in ventilation duct system. The device, based on single MPP design, consists of different expansion chambers with the side-branch cavities covered by micro-perforate panels of different properties. The theoretical model can also be simplified to evaluate the performance for normal plate silencer. With a preliminary result of two normal plates, it shows that the plate silencer can offer a wide stop band of 3.5 from low to medium frequency range when the length ratio is 1 to 4. Compared with same total length of a single plate, the stop band is improved by 25%. For the MPP silencer under similar condition, the stop band is also increased by 16%. Apart from the considerate increment of stop band, the bending stiffness requirement is also released by 35% and 40% respectively.

AB - Generalized formulation is developed analytically to calculate the transmission loss performance of a silencer by using multiple micro-perforate panel (MPP) array silencers in ventilation duct system. The device, based on single MPP design, consists of different expansion chambers with the side-branch cavities covered by micro-perforate panels of different properties. The theoretical model can also be simplified to evaluate the performance for normal plate silencer. With a preliminary result of two normal plates, it shows that the plate silencer can offer a wide stop band of 3.5 from low to medium frequency range when the length ratio is 1 to 4. Compared with same total length of a single plate, the stop band is improved by 25%. For the MPP silencer under similar condition, the stop band is also increased by 16%. Apart from the considerate increment of stop band, the bending stiffness requirement is also released by 35% and 40% respectively.

KW - Multiple panel

KW - Sound reflection

KW - Transmission loss

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M3 - Conference article published in proceeding or book

BT - INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering

PB - Australian Acoustical Society

T2 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014

Y2 - 16 November 2014 through 19 November 2014

ER -

Performance of multiple micro-perforated panels in a duct

Abstract

Conference

Keywords

ASJC Scopus subject areas

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