NOISE PREDICTION SIMULATION OF COMPLEX INSTALLATION FOR HIGH-POWER CO-GENERATION PLACED WITHIN MIXED OF INDUSTRIAL AND RESIDENTIAL AREA

摘要

The problem of predicting the Noise Pollution from a Co-Generation installation, has been split among 4 main subjects: Sources modelling, Propagation both in near and far field, Reliability of Noise level at receptors, Noise Control actions. Each task present different issues need to be approached differently. Briefly we start to divide in simplified sub-systems the container box and to adopt propagation hybrid models, like simultaneous spherical waves and Ray-tracing Sound propagation, after we had to check for model validation by estimating Sound Power and Propagation paths of individual principal sources, and in the end to simulate Noise Control using Multi-layers walls panel and Reactive Mufflers. The overall results were verified by using two different simulation methods (SEA and Propagation model) and also experimentally during the installation to check the respect of the noise limits in the neighbourhood area and for the annoyance which might be an additional problem due to the presence of Tonal components.