Reducing infrasound and low frequency noise from wind turbine blades and rotors using ANC

Adewumi, Gloria A.; Nyamayoka, Lumbumba Taty-Etienne; Inambao, Freddie L.

doi:10.7243/2052-6237-3-3

Cited by 7 publications

(5 citation statements)

References 27 publications

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“…A number of authors have mentioned infrasound as a noise-related issue resulting from the wind farm operation [14][15][16][17][18][19][20], while some others are more concerned with lowfrequency sound [21]. In their comprehensive study of literature on the possible effects of wind farms on the health of the population, Freiberg et al [22] conclude that when it comes to infrasound and low-frequency noise produced by turbines in wind power plants, major impacts on people include physical symptoms, general health issues, and affective impact (temper).…”

Section: Introductionmentioning

confidence: 99%

Cumulative Impact of Wind Farm Noise

Josimović,

Bezbradica,

Manić

et al. 2023

Applied Sciences

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Although wind farms have an undeniable beneficial impact on the environment, certain negative environmental implications do appear as a consequence of their operation. One of them is the production of noise. The wind farm noise values decrease with distance, so that at a certain point they are within the legally prescribed limits. This is the case for individual wind farms noise impact assessments. However, with two or more wind farms in the same area, there is a superposition of noise and a consequential change in the noise value. The focus of the paper is on the results of modeling noise propagation in space in the case of the cumulative impact of two neighboring wind farms. The results are modeled during the process of strategically assessing the environment so as to determine territorial impacts and make informed decisions about future development. The paper presents the strategic answer to the model of the spatial propagation of noise in cases of cumulative impact with a view to including the preventive protection principle in the planning of several adjacent wind farms.

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Section: Introductionmentioning

confidence: 99%

Cumulative Impact of Wind Farm Noise

Josimović,

Bezbradica,

Manić

et al. 2023

Applied Sciences

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“…Problems that have stood out in importance in practice so far relate to the acoustic impact of noise and sleep disturbance to which local populations living near wind farms are exposed [31,32]. Some authors point out that part of the problem related to noise from wind farms relates to infrasound [33][34][35][36][37][38][39][40][41][42][43], while others highlight the significance of low frequency sound [44,45]. After an extensive analysis of the literature, Freiberg et al [46], in an assessment of the potential effects of wind turbines on human health, concluded that in the case of infrasound and low frequency noise generated by wind turbines, the main effects of their impact on humans are physical symptoms, health effects in general and affective influence (mood).…”

Section: Introductionmentioning

confidence: 99%

Strategic Environmental Assessment in the Application of Preventive Protection for Wind Farm Noise—Case Study: Maestrale Ring Wind Farm

2021

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Determining the spatial position of wind turbines is the initial and most important phase in the development of a wind farm project. In this sensitive phase, all potential problems that may arise in the later stages of project development should be prevented by means of spatial and urban planning instruments. This makes it possible to achieve maximum use of the potential of wind in a particular space and, thus, fulfil the technical and economic requirements of the project while respecting the goals of environmental protection in that same area, through preventive protection. Therefore, it is essential, even at the earliest planning and development stage of a wind farm project, for the requirements that are important for optimal spatial solutions to be balanced. In this process, strategic environmental assessment (SEA) is a support to the planning process and an invaluable instrument for finding optimal spatial solutions for the possible key spatial impacts of wind power with regard to noise, shadow flicker, ornithofauna and chiropterofauna. The weakness of SEA can be seen in its predominant application of expert qualitative methods that bring with them subjectivity, since they depend on expert knowledge and skills. This paper presents the aspect of noise impact assessment and its inclusion in the SEA for the Maestrale Ring wind farm in Serbia. The results of the research indicate how it is possible to achieve the principle of objectivity in the process of multicriteria expert evaluation by including the results of a partial impact assessment of the noise from wind farms, using results obtained from software modeling of the spatial dispersion of wind turbine noise in the SoundPlan 8.1 software package in the SEA process. These quantitative results predicting the noise level were used in a semi-quantitative method of multicriteria evaluation in the SEA through the definition of criteria to determine the ranking of impacts, which is elaborated in the paper. The results also show the significant of the contribution of applying a methodological approach based on a combination of qualitative and quantitative evaluation methods in SEA. These methods positively affect the application of the principle of preventive protection through the optimal selection of the number and position of wind turbines on one hand and the objectivity of drawing conclusions based on which strategic decisions are made in the final phase of the SEA process, on the other.

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“…There was no direct conversion of the bio-based materials into carbon structures. The authors could find only one study reporting green nanofluid made out of carbon nanostructures derived from biobased materials wherein carbon nanospheres and nanotubes and were prepared using coconut fibre-activated carbon [40]. For this, the coconut fibre was carbonized and then activated by physical treatment.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and thermal conductivity of functionalized biocarbon-Fe₃O₄ nanocomposite-based green nanofluid for heat transfer applications

2021

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Bio-based graphitic carbon was synthesized in this work by one-step carbonization of bamboo waste at low temperature. This bio-based carbon was then functionalized in order to decorated it with Fe3O4 nanoparticles. The functionalized biocarbon-Fe3O4 (f-biocarbon-Fe3O4) nanocomposite was synthesized using ultrasound-assisted coprecipitation method which was then confirmed by scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffractometry. Water-based nanofluid was prepared using the synthesized f-biocarbon-Fe3O4 nanocomposite particles. Thermal conductivity of this nanofluid was analyzed at different concentrations and temperatures. A thermal conductivity enhancement of almost 80% was recorded at 35°C for nanofluid containing 0.1 vol.% of f-biocarbon-Fe3O4 nanocomposite particles compared to water. Also, empirical model is developed for prediction of thermal conductivity as a function of concentration and temperature of bamboo waste-derived f-biocarbon-Fe3O4 nanocomposite-based green nanofluid.

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Reducing infrasound and low frequency noise from wind turbine blades and rotors using ANC

Cited by 7 publications

References 27 publications

Cumulative Impact of Wind Farm Noise

Cumulative Impact of Wind Farm Noise

Strategic Environmental Assessment in the Application of Preventive Protection for Wind Farm Noise—Case Study: Maestrale Ring Wind Farm

Synthesis and thermal conductivity of functionalized biocarbon-Fe₃O₄ nanocomposite-based green nanofluid for heat transfer applications

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Reducing infrasound and low frequency noise from wind turbine blades and rotors using ANC

Cited by 7 publications

References 27 publications

Cumulative Impact of Wind Farm Noise

Cumulative Impact of Wind Farm Noise

Strategic Environmental Assessment in the Application of Preventive Protection for Wind Farm Noise—Case Study: Maestrale Ring Wind Farm

Synthesis and thermal conductivity of functionalized biocarbon-Fe3O4 nanocomposite-based green nanofluid for heat transfer applications

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Product

Resources

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Synthesis and thermal conductivity of functionalized biocarbon-Fe₃O₄ nanocomposite-based green nanofluid for heat transfer applications