Possible ways of reducing the effect of thermal power facilities on the environment

Zroichikov, N. A.; Prokhorov, V. B.; Tupov, V. B.; Arkhipov, A. M.; Fomenko, M. V.

doi:10.1134/s0040601515020123

Cited by 4 publications

(2 citation statements)

References 3 publications

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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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Section: Introductionmentioning

confidence: 99%

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

2019

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“…The most effective method to reduce noise emitted by steam discharges from power plant boilers is the installation of noise silencers on the discharge pipes. The devices are made of several coaxially mounted cylinders filled with a noncombustible, nonhygroscopic, sound-absorbing material that is protected by a glass fiber cloth or perforated metal sheets [39]. Due to aggressive operating conditions associated with high temperature steam flow, stainless steel as well as enamel coatings are applied.…”

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confidence: 99%

Environmental Performance of Noise Reduction System in Cogeneration Plants—A Life Cycle Assessment Study

Marcinkowski

Kopania

2021

Energies

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Although one of the most harmful factors to health is noise, it is often ignored in life cycle assessment (LCA) studies. Most researches regarding noise inclusion in LCA focus on the problem of transport noise, and very few works consider the impact of noise emitted by other sources. This study addresses the effects of noise generated by cogeneration plants. The main objective is to assess the environmental performance of the noise reduction system by considering the health effects of noise due to steam discharge as well as to compare the environmental loss associated with the production and disposal of a steam silencer with the benefits resulting from its application for noise reduction. A method to determine midpoint and endpoint human health indicators for a composition of noise emitted by intermittent stationary source and background noise is developed. The results indicate that the health benefit due to noise reduction is six orders of magnitude greater than the environmental loss. Human health indicators attributable to noise reduction in the residential zones under consideration span a wide range of disability adjusted life years (DALY)—0.16–136 DALY. The greatest values occur in the densely populated areas located close to the noise source. A formula is proposed to express annoyance of the residents of individual zones depending on their distance to the steam discharge source, its sound power level, and existing background noise level. Uncertainty and sensitivity analyses have been carried out assuming other conditions. Modifications of sound power level, noise reduction efficiency, steam discharge duration, and the silencer lifetime have not affected the overall conclusion drawn.

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Steady and Transient Mathematical Models of Steam Jets

Tupov

Taratorin

2017

Procedia Engineering

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Possible ways of reducing the effect of thermal power facilities on the environment

Cited by 4 publications

References 3 publications

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

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

Environmental Performance of Noise Reduction System in Cogeneration Plants—A Life Cycle Assessment Study

Steady and Transient Mathematical Models of Steam Jets

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