111. A Pilot Survey of the Availability of Noise Emission Data for Equipment and Machinery Sold in Canada

Kistenwaschmaschinen sind in der Lebensmittelindustrie, insbesondere in der Fleischbranche eine der dominanten Schallquellen und mitverantwortlich für das Krankheitsbild der berufsbedingten Lärmschwerhörigkeit (Berufskrankheit Nr. 2301). Entsprechend lärmgeminderte Anlagen werden beim Einkauf zu selten nachgefragt. Hersteller sind nach EG-Maschinenrichtlinie (2006/42/EG) verpflichtet, Schallemissionswerte (sog. Geräuschemissionsangaben) gleichwertig zu sonstigen Leistungsangaben in entsprechenden Verkaufsprospekten, Bedienungsanleitungen als auch auf Internetportalen anzugeben (Tabelle 1). Nur dadurch wird dem Arbeitgeber als Maschinenbetreiber die Möglichkeit gegeben, seiner Pflicht, geräuscharme Produktionsmittel nach dem Stand der Technik einzusetzen, nachzukommen. Die Alternative der nachträglichen Lärmminderung ist zwar möglich, aber immer mit zusätzlichen Kosten und Aufwand verbunden.   Summary Crate washing machines are one of the dominant sound sources in the food industry, especially in the meat industry, and responsible for the clinical picture of occupational noise-induced deafness (occupational disease No. 2301). Accordingly, quiet systems are rarely in demand when shopping. Manufacturers are required by the EC Machinery Directive (2006/42/EC) to specify sound emission values (so-called noise emission data) equivalent to other performance data in corresponding sales prospectuses, operating instructions and on Internet portals (table 1). Only in this way is the employer, as machine operator, given the opportunity to fulfill his duty to use low-noise production equipment according to the state of the art. The alternative of the subsequent noise abatement is possible but partly associated with additional costs and effort.

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Communicating airport noise emission data to the general public

The Science of The Total Environment ◽

10.1016/j.scitotenv.2017.02.063 ◽

2017 ◽

Vol 586 ◽

pp. 836-848 ◽

Cited By ~ 7

Author(s):

Luis Gasco ◽

Cesar Asensio ◽

Guillermo de Arcas

Keyword(s):

General Public ◽

Noise Emission ◽

Emission Data

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Experimental and Numerical Investigation of Direct and Indirect Combustion Noise Contributions in a Lean Premixed Laboratory Swirled Combustor

Volume 4B: Combustion, Fuels and Emissions ◽

10.1115/gt2016-57848 ◽

2016 ◽

Cited By ~ 4

Author(s):

Nancy Kings ◽

Wenjie Tao ◽

Philippe Scouflaire ◽

Franck Richecoeur ◽

Sébastien Ducruix

Keyword(s):

Numerical Study ◽

Combustion Noise ◽

Noise Generation ◽

Noise Emission ◽

Emission Data ◽

Spectral Content ◽

The Core ◽

Operation Conditions ◽

Aero Engines ◽

Generation Mechanisms

Combustors are contributing to the core noise emission of aero-engines in terms of direct and indirect combustion noise. The first is caused by the unsteady heat release rate, the second by the acceleration of inflow inhomogeneities, such as entropy fluctuations, at the combustor outlet or in the turbine. This work aims to investigate combustion noise generation mechanisms of a choked laboratory scale combustor by a combined experimental and numerical study. Therefore, the temperature fluctuations at the combustor outlet were determined experimentally as well as numerically and cross-checked together with pressure and OH* emission data in the frequency domain. A similar spectral content was found. Furthermore, the acoustic and entropy fluctuations at the combustion chamber outlet were evaluated for different operation conditions to estimate the direct and indirect combustion noise contributions of a laboratory combustor.

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