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Sachs J.,KOTTER Beratende Ingenieure Berlin GmbH | Kurtz W.,TUV Rheinland Immissionsschutz und Energiesysteme GmbH
VGB PowerTech | Year: 2010

The assessment of plants according to the state of the art is very significant in pollution control approval procedures. It is also important for approvals following mining law related for open cast mining and its dedicated facilities. Against the background of this, three lignite open-cast mines within the region of Lausitz were surveyed to the state of the art for noise abatement. On-Site measurements were the primary source for the defiled evaluation of the acoustic emission of giant open-cast mine equipment and conveyors. The comparison of the measurement results with noise characteristics of comparable equipment shows the potential of noise emission reduction. The state of the art for noise abatement must not be separated from the objective, which is the minimization of harmful impact of sound to the environment. The noise reduction concept has to take into account the technical feasibility of measures as well as the effect relating to the abatement of noise impact in the neighborhood. For open-cast mines, which are changing operationally and regarding their location continuously, the realization of the noise reduction concept is a medium or long term process. It is therefore required to continuously adapt the recommended measures for noise reduction for a particular mine to its development and if so required modify term. The investigations have been earned out are a reliable source for this. Source

Hu Z.,TUV Rheinland Immissionsschutz und Energiesysteme GmbH | Martinez S.,TUV Rheinland Immissionsschutz und Energiesysteme GmbH | Kurtz W.,TUV Rheinland Immissionsschutz und Energiesysteme GmbH
Larmbekampfung | Year: 2010

The object of this project is to reduce the complexity of the determination of sound power levels of wind turbines. The sound power level of a wind turbine was calculated according to DIN EN 61400-11 (microphone on a ground plate) and according to DIN ISO 9613-2 (microphone in a height of 2 m and 4 m over ground). At all microphone positions the same sound power level was determined. The conclusion is, that under special conditions the use of the bounding surface microphone is not necessary. In measuring situations such as windturbins in greater distance or sound sources near ground, the application of the surface microphone reaches limits. Further research is necessary. Source

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