Reduction of noise emitted from exhaust paths of gas turbine units equipped with heat recovery boilers

Tupov, V. B.; Chugunkov, D. V.; Semin, S. A.

doi:10.1134/s0040601509010054

Cited by 4 publications

(1 citation statement)

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“…The dissipative silencer works on the principle of partial conversion of sound energy into thermal energy. A noise suppressor of this type, as a rule, consists of one or several sound attenuation elements, each of which has an outer shell of thin-walled metal with a section of a perforated surface [12][13][14][15][16][17][18][19][20]. The inner space of the element is filled with sound-absorbing material (SAM), placed in a shell of sound-permeable material, which protects the SAM from being blown out by the flow of gaseous medium from the space of the sound attenuation element.…”

Section: Introductionmentioning

confidence: 99%

Improving the acoustic efficiency of laminated dissipative noise silencers for boiler gas-air paths

2019

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The operation of thermal power facilities is associated with the negative impact on the environment and humans of such factors as air, water, soil pollution, electromagnetic radiation, and noise. This article is devoted to improving the noise reduction efficiency of gas and air paths of boilers of thermal power plants. In world practice, to reduce noise in gas-air ducts, dissipative noise silencers are used. The authors propose a new design of sound attenuation elements for dissipative plate-type silencers. The article defines the acoustic and aerodynamic characteristics of noise silencers with new sound attenuation elements. We compare the characteristics of silencers made of new silencing elements and the characteristics of silencers consisting of plates of common design with flat surfaces of the side walls, and demonstrate an increase in acoustic efficiency and a decrease in pressure loss when using the proposed new silencing elements in noise silencers. Recommendations on the use of dissipative plate-type silencers with developed sound attenuation elements for gas-air paths of boilers are given.

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