Finite‐ and infinite‐element approaches for low‐frequency noise field in a thermal power plant

1990 ◽  
Vol 88 (S1) ◽  
pp. S116-S116
Author(s):  
Tsutomu Hiramatso ◽  
Yoichi Ikeda
Keyword(s):  
Power Plant ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Low Frequency ◽  
Frequency Noise ◽  
Low Frequency Noise ◽  
Infinite Element ◽  
Noise Field

scholarly journals Perfis verticais dos espectros das velocidades turbulentas em uma torre micrometeorológica de 140 m

2018 ◽  
Vol 40 ◽  
pp. 229
Author(s):  
Otávio Costa Acevedo ◽  
Pablo Eli Soares de Oliveira ◽  
Claudio Alberto Teichrieb ◽  
Franciano Scremin Puhales ◽  
Luis Gustavo Nogueira Martins ◽  
...  
Keyword(s):  
Power Plant ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Vertical Component ◽  
Low Frequency ◽  
Vertical Wind ◽  
The Other ◽  
Horizontal Wind ◽  
Temporal Scales ◽  
Spectral Maximum

Multiresolution spectra of both horizontal and vertical wind components observed at a 140-m micrometeorological tower are analysed. The tower is located at the township of Linhares, ES, Brazil, at 4 km from the coast and nest to a thermal power plant. At nighttime, the spectral maximum is located at the largest temporal scales analyzed, being therefore related to nonturbulent low-frequency processes. During the day, spectral maxima of the horizontal wind components show little variation above 20 m.For the vertical component, on the other hand, the temporal scale of such maxima increases steadily with height.

scholarly journals DEVELOPMENT OF AN EXPERIMENTAL-THEORETICAL MODEL FOR THE NOISE FIELD OF THERMAL POWER PLANT EQUIPMENT

2018 ◽  
Vol 20 (5-6) ◽  
pp. 84-92
Author(s):  
O. A. Gorbunova ◽  
G. I. Pavlov
Keyword(s):  
Theoretical Model ◽  
Power Plant ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Noise Pollution ◽  
Noise Field ◽  
Power Plant Equipment ◽  
Efficiency Estimation ◽  
Plant Equipment ◽  
Industrial Boilers

This article studies problems of forecasting of noise pollution by thermal power plant equipment, industrial boilers, etc. An acoustic model of a residential area, exposed to power plant equipment noise nuisance, has been developed by means of AWM “Acoustics” software using obtained data. Practical application of the experimental-theoretical model for the noise field was demonstrated for efficiency estimation of the proposed engineering solution to noise reduction.

ESTIMATION OF THERMAL POWER PLANT WORKERS EXPOSURE TO MAGNETIC FIELDS AND SIMULATION OF HAZARD ZONES

2020 ◽  
Vol 190 (3) ◽  
pp. 289-296
Author(s):  
Majid Bagheri Hosseinabadi ◽  
Narges Khanjani ◽  
Mohammad Hossein Ebrahimi ◽  
Jamal Biganeh
Keyword(s):  
Power Plant ◽  
Magnetic Fields ◽  
Transmission Lines ◽  
Thermal Power Plant ◽  
Power Transmission ◽  
Thermal Power ◽  
Low Frequency ◽  
Exposure Level ◽  
Power Transmission Lines ◽  
Indoor Space

Abstract Extremely low-frequency magnetic fields (ELF-MFs) have raised some concerns due to their possible effects on workers’ health. In this study ELF-MFs were measured in different units of the thermal power plant based on gridding the indoor space. The exposure level was measured by spot measurement based on the IEEE Std C95.3.1 and then simulated in units with the highest magnetic field intensity by using ArcGIS software. The operators and balance of plant (BOP) technicians (12.64 ± 9.74 μT) and office workers (2.41 ± 1.22 μT) had the highest and lowest levels of both measured and estimated ELF-MFs exposure. The highest measured ELF-MFs were in the vicinity of the power transmission lines in the transformers’ building (48.2 μT). Our simulation showed the high and low exposure areas and ranked exposure well; but, the actual measurements of ELF-MFs exposure were in all cases higher than the estimated values, which means we still need to improve our estimations.

Study on Aseismic Behavior of Shear Wall with Frame Column in the Large Thermal Power Plant

2012 ◽  
Vol 446-449 ◽  
pp. 621-625
Author(s):  
Zhao Wu Shen ◽  
She Liang Wang ◽  
Xiang Zhao
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Power Plant ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Low Frequency ◽  
Shear Wall ◽  
The Finite Element Method ◽  
Element Analysis ◽  
Element Method

In order to analyze aseismic behavior of the high reinforced concrete (R.C.) shear wall with frame column in the large thermal power plant, the model structure has been taken test with method of low frequency cyclic repeated load that has 1/15 scaling factor to practical structure. At same time the model has been analyzed by the finite element method which takes the Hognestad concrete constitutive model and ideal elastic-plasticity steel reinforcement constitutive equation. It has been found that the hysteretic curve is relatively full and energy dissipation capacity is better through the experiment. The bearing capacity, deformation and fracture results to the Shear wall of finite element analysis are closely with the test results. In general, the R.C. shear wall with frame column in the large thermal power plant has good aseismic performance. The finite element method can be taken to analyzed the similarity structure.

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