Noise transmission from a small, hermetic, reciprocating compressor

Research output: Contribution to conferencePaper

Abstract

In recent years, refrigerant compressor design has become increasingly focused on limiting noise emissions, as many of these units are installed in residential spaces. This paper aims to characterize the noise emitted from a small, hermetic, reciprocating compressor and identify the primary transmission path of noise from the compressor to its shell enclosure. Radiated sound power measurements show that the compressor projects noise that peaks at frequencies most sensitive to the human ear. Transmissibility measurements show that the compressor’s vibration isolation system becomes ineffective at high frequencies, as it is mounted to a non-rigid foundation. Measurements of transmissibility and radiated sound power of production line and rigidly-mounted units suggest that the mechanical transmission path dominates the shell excitation across the frequency spectrum. The paper concludes by proposing a general design modification to reduce the radiated noise from similar units.

Original languageEnglish (US)
StatePublished - Jan 1 2018
Event47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018 - Chicago, United States
Duration: Aug 26 2018Aug 29 2018

Other

Other47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018
CountryUnited States
CityChicago
Period8/26/188/29/18

Fingerprint

compressors
acoustics
refrigerants
ear
enclosure
isolation
vibration
excitation

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

Cite this

Cunsolo, J. V., Brungart, T. A., & Hambric, S. A. (2018). Noise transmission from a small, hermetic, reciprocating compressor. Paper presented at 47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018, Chicago, United States.
Cunsolo, John V. ; Brungart, Timothy A. ; Hambric, Stephen A. / Noise transmission from a small, hermetic, reciprocating compressor. Paper presented at 47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018, Chicago, United States.
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Cunsolo, JV, Brungart, TA & Hambric, SA 2018, 'Noise transmission from a small, hermetic, reciprocating compressor' Paper presented at 47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018, Chicago, United States, 8/26/18 - 8/29/18, .

Noise transmission from a small, hermetic, reciprocating compressor. / Cunsolo, John V.; Brungart, Timothy A.; Hambric, Stephen A.

2018. Paper presented at 47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018, Chicago, United States.

Research output: Contribution to conferencePaper

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AU - Hambric, Stephen A.

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N2 - In recent years, refrigerant compressor design has become increasingly focused on limiting noise emissions, as many of these units are installed in residential spaces. This paper aims to characterize the noise emitted from a small, hermetic, reciprocating compressor and identify the primary transmission path of noise from the compressor to its shell enclosure. Radiated sound power measurements show that the compressor projects noise that peaks at frequencies most sensitive to the human ear. Transmissibility measurements show that the compressor’s vibration isolation system becomes ineffective at high frequencies, as it is mounted to a non-rigid foundation. Measurements of transmissibility and radiated sound power of production line and rigidly-mounted units suggest that the mechanical transmission path dominates the shell excitation across the frequency spectrum. The paper concludes by proposing a general design modification to reduce the radiated noise from similar units.

AB - In recent years, refrigerant compressor design has become increasingly focused on limiting noise emissions, as many of these units are installed in residential spaces. This paper aims to characterize the noise emitted from a small, hermetic, reciprocating compressor and identify the primary transmission path of noise from the compressor to its shell enclosure. Radiated sound power measurements show that the compressor projects noise that peaks at frequencies most sensitive to the human ear. Transmissibility measurements show that the compressor’s vibration isolation system becomes ineffective at high frequencies, as it is mounted to a non-rigid foundation. Measurements of transmissibility and radiated sound power of production line and rigidly-mounted units suggest that the mechanical transmission path dominates the shell excitation across the frequency spectrum. The paper concludes by proposing a general design modification to reduce the radiated noise from similar units.

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Cunsolo JV, Brungart TA, Hambric SA. Noise transmission from a small, hermetic, reciprocating compressor. 2018. Paper presented at 47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018, Chicago, United States.