Noise reduction of an extinguishing nozzle using the response surface method

Yo Hwan Kim; Myoungwoo Lee; In Ju Hwang; Youn Jea Kim

doi:10.3390/en12224346

Noise reduction of an extinguishing nozzle using the response surface method

Yo Hwan Kim, Myoungwoo Lee, In Ju Hwang, Youn Jea Kim^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

An inert gas such as nitrogen is used as an extinguishing agent to suppress unexpected fire in places such as computer rooms and server rooms. The gas released with high pressure causes noise above 130 dB. According to recent studies, loud noise above 120 dB has a strong vibrational energy that leads to a negative influence on electronic equipment with a high degree of integration. In this study, a basic fire-extinguishing nozzle with absorbent was selected as the reference model, and numerical analysis was conducted using the commercial software, ANSYS FLUENT ver. 18.1. A total of 45 experiment points was selected using the design of experiment (DOE) method. An optimum point was derived using the response surface method (RSM). Results show that the vibrational energy of the noise was reduced by minimizing the turbulence kinetic energy. Pressure and velocity distributions were calculated and graphically depicted with various absorbent configurations.

Original language	English
Article number	4346
Journal	Energies
Volume	12
Issue number	22
DOIs	https://doi.org/10.3390/en12224346
Publication status	Published - 2019 Nov 15
Externally published	Yes

Keywords

CAA
CFD
Fire-extinguishing nozzle
Genetic aggregation
Optimization
RSM

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Building and Construction
Fuel Technology
Engineering (miscellaneous)
Energy Engineering and Power Technology
Energy (miscellaneous)
Control and Optimization
Electrical and Electronic Engineering

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10.3390/en12224346

Cite this

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title = "Noise reduction of an extinguishing nozzle using the response surface method",

abstract = "An inert gas such as nitrogen is used as an extinguishing agent to suppress unexpected fire in places such as computer rooms and server rooms. The gas released with high pressure causes noise above 130 dB. According to recent studies, loud noise above 120 dB has a strong vibrational energy that leads to a negative influence on electronic equipment with a high degree of integration. In this study, a basic fire-extinguishing nozzle with absorbent was selected as the reference model, and numerical analysis was conducted using the commercial software, ANSYS FLUENT ver. 18.1. A total of 45 experiment points was selected using the design of experiment (DOE) method. An optimum point was derived using the response surface method (RSM). Results show that the vibrational energy of the noise was reduced by minimizing the turbulence kinetic energy. Pressure and velocity distributions were calculated and graphically depicted with various absorbent configurations.",

keywords = "CAA, CFD, Fire-extinguishing nozzle, Genetic aggregation, Optimization, RSM",

author = "Kim, {Yo Hwan} and Myoungwoo Lee and Hwang, {In Ju} and Kim, {Youn Jea}",

note = "Funding Information: This research was supported by a grant (19TBIP-C127229-03) from Ministry of Land Transportation Technology Business Support Program funded by Ministry of Land, Infrastructure and Transport of Korean government. This research was supported by a grant (19TBIP-C127226-03) from commercialization of national transportation technology funded by the Ministry of Land, Infrastructure and Transport of the Korean Government. Funding Information: Acknowledgments: This research was supported by a grant (19TBIP-C127226-03) from commercialization of national transportation technology funded by the Ministry of Land, Infrastructure and Transport of the Korean Government. Funding Information: Author Contributions: Supervision, Y.J.K.; writing original draft, Y.H.K. writing review and editing, Y.H.K., M.L. and I.J.H. All authors contributed to the manuscript. All authors read and approved the final manuscript. Korean government. Funding: This research was supported by a grant (19TBIP-C127229-03) from Ministry of Land Transportation Acknowledgments: This research was supported by a grant (19TBIP-C127226-03) from commercialization of national transportation technology funded by the Ministry of Land, Infrastructure and Transport of the KgoovreearnnmGeonvte.rnment. Publisher Copyright: {\textcopyright} 2019 by the authors.",

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doi = "10.3390/en12224346",

language = "English",

volume = "12",

journal = "Energies",

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AU - Kim, Yo Hwan

AU - Lee, Myoungwoo

AU - Hwang, In Ju

AU - Kim, Youn Jea

N1 - Funding Information: This research was supported by a grant (19TBIP-C127229-03) from Ministry of Land Transportation Technology Business Support Program funded by Ministry of Land, Infrastructure and Transport of Korean government. This research was supported by a grant (19TBIP-C127226-03) from commercialization of national transportation technology funded by the Ministry of Land, Infrastructure and Transport of the Korean Government. Funding Information: Acknowledgments: This research was supported by a grant (19TBIP-C127226-03) from commercialization of national transportation technology funded by the Ministry of Land, Infrastructure and Transport of the Korean Government. Funding Information: Author Contributions: Supervision, Y.J.K.; writing original draft, Y.H.K. writing review and editing, Y.H.K., M.L. and I.J.H. All authors contributed to the manuscript. All authors read and approved the final manuscript. Korean government. Funding: This research was supported by a grant (19TBIP-C127229-03) from Ministry of Land Transportation Acknowledgments: This research was supported by a grant (19TBIP-C127226-03) from commercialization of national transportation technology funded by the Ministry of Land, Infrastructure and Transport of the KgoovreearnnmGeonvte.rnment. Publisher Copyright: © 2019 by the authors.

PY - 2019/11/15

Y1 - 2019/11/15

N2 - An inert gas such as nitrogen is used as an extinguishing agent to suppress unexpected fire in places such as computer rooms and server rooms. The gas released with high pressure causes noise above 130 dB. According to recent studies, loud noise above 120 dB has a strong vibrational energy that leads to a negative influence on electronic equipment with a high degree of integration. In this study, a basic fire-extinguishing nozzle with absorbent was selected as the reference model, and numerical analysis was conducted using the commercial software, ANSYS FLUENT ver. 18.1. A total of 45 experiment points was selected using the design of experiment (DOE) method. An optimum point was derived using the response surface method (RSM). Results show that the vibrational energy of the noise was reduced by minimizing the turbulence kinetic energy. Pressure and velocity distributions were calculated and graphically depicted with various absorbent configurations.

AB - An inert gas such as nitrogen is used as an extinguishing agent to suppress unexpected fire in places such as computer rooms and server rooms. The gas released with high pressure causes noise above 130 dB. According to recent studies, loud noise above 120 dB has a strong vibrational energy that leads to a negative influence on electronic equipment with a high degree of integration. In this study, a basic fire-extinguishing nozzle with absorbent was selected as the reference model, and numerical analysis was conducted using the commercial software, ANSYS FLUENT ver. 18.1. A total of 45 experiment points was selected using the design of experiment (DOE) method. An optimum point was derived using the response surface method (RSM). Results show that the vibrational energy of the noise was reduced by minimizing the turbulence kinetic energy. Pressure and velocity distributions were calculated and graphically depicted with various absorbent configurations.

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KW - CFD

KW - Fire-extinguishing nozzle

KW - Genetic aggregation

KW - Optimization

KW - RSM

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JO - Energies

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ER -

Noise reduction of an extinguishing nozzle using the response surface method

Abstract

Keywords

ASJC Scopus subject areas

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