TSP, PM10 and PM2.5 Distribution Characteristics in the Thermal Power Plants in Korea
Geum-Ju Song,
Young-Hoon Moon,
Jong-Ho Joo,
A-Yeoung Lee,
Jae-Bok Lee
Issue:
Volume 4, Issue 4, August 2019
Pages:
63-70
Received:
12 April 2019
Accepted:
31 May 2019
Published:
10 August 2019
Abstract: In this study, the emission characteristics and heavy metal contents of TSP, PM10 and PM2.5 pollutants from three thermal power plants in Korea were investigated and compared to the electric production capacity, type of fuel and sort of air-pollution-control device. For the measurement and analysis, Korean standard test method US EPA method were used. The average concentration of TSP, PM10 and PM2.5 emitted from Plant A were 7.39, 6.16, 4.83 mg/Sm3, Plant B was 5.82, 4.87, 2.35 mg/Sm3 and Plant C was 1.54, 1.40, 10.02 mg/Sm3, respectively. Plant A that uses heavy oil as the main fuel showed higher TSP, PM10 and PM2.5 than Plant B that uses mostly anthracite coal, and plant B showed higher TSP, PM10 and PM2.5 than Plant C that mainly uses bituminous coal. The concentration of fine particles decreased as electricity-production capacity increased. The fractions of PM10 and PM2.5 in TSP were relatively high in tested plants; this result means that more fine particles than coarse particles were emitted from all stacks. The distribution of heavy metals by particle size showed similar trends in all plants. The concentration of Zn and Mn in TSP, PM10 and PM2.5 showed higher than the others in all plants. These results confirm that the content of heavy metals in the particulate matter is influenced by the fuel that the plant uses.
Abstract: In this study, the emission characteristics and heavy metal contents of TSP, PM10 and PM2.5 pollutants from three thermal power plants in Korea were investigated and compared to the electric production capacity, type of fuel and sort of air-pollution-control device. For the measurement and analysis, Korean standard test method US EPA method were us...
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Research on the Transfer Characteristics of the Micro Particle in a Corrugated Pipe
Ding Yu,
Ning Zhi,
Lü Ming
Issue:
Volume 4, Issue 4, August 2019
Pages:
71-79
Received:
21 June 2019
Published:
27 August 2019
Abstract: The corrugated pipe is widely used in figure heat exchangers. For the reason of large temperature difference between the gas in the pipe and the cold wall, particles may deposit on the wall, and make some adverse effects, such as poor cooling effect and the block in the pipe, especially in the pipe node. To solve the problem of deposition in the pipe, this paper will apply the model of DRW to calculate the trajectory of the micro particles. In this paper, the trajectories of particles with different sizes in a corrugated pipe are calculated, and the effects of structure parameter and inlet velocity on the trajectories of particles are studied. The conclusion can provide a theoretical basis for solving the deposition in corrugated pipes.
Abstract: The corrugated pipe is widely used in figure heat exchangers. For the reason of large temperature difference between the gas in the pipe and the cold wall, particles may deposit on the wall, and make some adverse effects, such as poor cooling effect and the block in the pipe, especially in the pipe node. To solve the problem of deposition in the pi...
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Flow Pattern and Hydraulic Parameter Characteristics of the Different Topographic Position in the Small Catchment
Wang Lingling,
Zuo Zhongguo,
Lou Xuan,
Huang Jing,
Hou Xinxin
Issue:
Volume 4, Issue 4, August 2019
Pages:
80-87
Received:
2 July 2019
Published:
27 August 2019
Abstract: Flow pattern and hydraulic parameter characteristics of the different topographic position in the “slope-gully-basin” system under the rainfall intensities of 60, 90 and 120 mm/h using generalized small watershed model with the simulated rainfall experiment. The results show that the increase of the rainfall intensity will result in the increase of the Reynolds number. During the whole experiment, only when the rainfall intensity is 60 mm/h, the flow pattern of the hilly-slope is laminar flow. The flow patterns of the other geomorphic position are all turbulent flow. Moreover, the Reynolds number of slope flow is much less than that of channel flow. With the increase of rainfall intensity, flow patterns of the all different geomorphic position changed from the stratum flow into torrent flow. Furthermore, the Froude number increases first and then decreases with the increase of rainfall intensity. For the resistance coefficient of the overland flow, with the increase of rainfall intensity, the resistance coefficient of overland flow and channel flow decreases obviously. For the spatial distribution of resistance coefficient, the maximum occurs at the hilly-slope and the minimum at the channel.
Abstract: Flow pattern and hydraulic parameter characteristics of the different topographic position in the “slope-gully-basin” system under the rainfall intensities of 60, 90 and 120 mm/h using generalized small watershed model with the simulated rainfall experiment. The results show that the increase of the rainfall intensity will result in the increase of...
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