Exhaust Gas Silencers for Power Plants
* Presenting author
MAN power plants from 10 to over 200 MW are equipped with gas/Diesel medium-speed engines with mechanical powers of 10-20 MW each. Through the acoustical design of the plant, several silencer types types are specified considering environmental and customers' requirements. In this presentation the attention is focused on exhaust gas silencers. Nowadays a direct or indirect control of the net sound emissions is to be expected in practically any application. An important challenge is the engineering of the silencer(s) in the context of the exhaust gas system, requiring besides an adequate interpretation of the boundary conditions and legal requirements a proper design. Mistakes in such design can have a serious technical (as too high emissions) and economical impact on the project, as the need for replacement or installing additional silencers under strong feasibility and penalty constrains. Preventive measures, as simulation of the silencers and of the exhaust gas system as well as realization of factory acceptance tests help to reduce such risks. For this, strategic partnerships with specialized consultants and manufacturers, confident with the technics of their products, are of advantage.