Abstract: At the present time, the natural air cooling tower for the power plant is being used widely. But at the same time, along with the more notice of people and the government, the more important it is that the noise of the air cooling tower need to be controlled in the working time. Project in this article uses silencer which is advanced international and effective to deal with the noise of the tower. This article discusses the envelop mode between the top of the silencer and the tower, to find the best envelop mode from completely opened to completely enveloped considering both the noise control effectivity and the cost.
Key words: natural air cooling tower; silencer; top panel; envelop; noise
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