Noise reduction in commercial refrigerators - a practical approach

Conference paper


Marques, A. C., Gomez-Agustina, L., Dance, S., Hammond, E. and Wood I. (2013). Noise reduction in commercial refrigerators - a practical approach . 20th International Congress on Sound and Vibration. Bangkok, Thailand 07 - 11 Jul 2013
AuthorsMarques, A. C., Gomez-Agustina, L., Dance, S., Hammond, E. and Wood I.
TypeConference paper
Abstract

An Adande refrigeration unit originally designed for use in the commercial catering industry was redesigned for use in households. This sector is more sensitive to refrigeration noise, following the introduction of the EU noise labelling directive. A practical noise control ap-proach was taken consisting of benchmarking the existing commercial unit, diagnosing the primary noise sources, redesigning the system components without affecting the refrigera-tion performance and assessing improvements. The aim was to reduce noise emissions and improve sound quality to those of frost free household refrigerators. Value engineering was used to optimise the performance gains such that the new unit suitable for the domestic mar-ket would be also used in the commercial sector. The sound power reduction achieved was greater than 4 dB. The sound quality of both the existing standard refrigerator and the opti-mised prototype unit were evaluated by a jury in a real living environment. The subjective exercise showed that the optimised prototype was perceived as being quieter and of im-proved sound quality compared to the standard refrigerator.

KeywordsNoise reduction, refrigeration
Year2013
Accepted author manuscript
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Print07 Jul 2013
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Deposited04 Aug 2021
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