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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Environmental Science International
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Journal DOI :
The Korean Environmental Sciences Society
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Volume & Issues
Volume 18, Issue 12 - Dec 2009
Volume 18, Issue 11 - Nov 2009
Volume 18, Issue 10 - Oct 2009
Volume 18, Issue 9 - Sep 2009
Volume 18, Issue 8 - Aug 2009
Volume 18, Issue 7 - Jul 2009
Volume 18, Issue 6 - Jun 2009
Volume 18, Issue 5 - May 2009
Volume 18, Issue 4 - Apr 2009
Volume 18, Issue 3 - Mar 2009
Volume 18, Issue 2 - Feb 2009
Volume 18, Issue 1 - Jan 2009
Selecting the target year
The Suitability of European Designed Wind Turbines for the East Asian Market
Brown, G.R.D. ; Barthelmie, R.J. ; Kim, Hyun-Goo ;
Journal of Environmental Science International, volume 18, issue 8, 2009, Pages 825~831
DOI : 10.5322/JES.2009.18.8.825
A first step review is completed on the suitability of European designed wind turbines in an East Asia climate. Six parameters are chosen for detailed analysis of proper meteorological measures from flat, hilly, forested, coastal and offshore sites in West Europe and East Asia: mean wind speed, 10 minute mean wind speed distribution, turbulence intensity, wind shear, 3 second extreme wind speed and 10 minute direction change. All six parameters are assessed with a view for contrast with the wind turbine design standard IEC61400. The diurnal and seasonal variation, average and extreme values of each parameter are calculated where appropriate. Industry standard software and analysis techniques have been employed to assess the applicability of existing wind turbine design standards and design guidelines for the East Asian market.
Including Thermal Effects in CFD Wind Flow Simulations
Meissner, Catherine ; Gravdahl, Arne Reidar ; Steensen, Birthe ;
Journal of Environmental Science International, volume 18, issue 8, 2009, Pages 833~839
DOI : 10.5322/JES.2009.18.8.833
The calculation of the wind field for resource assessment is done by using CFD Reynolds-Averaged Navier-Stokes simulations performed with the commercial software WindSim. A new interface has been created to use mesoscale simulation data from a meteorological model as driving data for the simulations. This method makes it necessary to take into account thermal effects on the wind field to exploit the full potential of this method. The procedure for considering thermal effects in CFD wind field simulations as well as the impact of thermal effects on the wind field simulations is presented. Simulations for non-neutral atmospheric conditions with the developed method are consistent with expected behavior and show an improvement of simulation results compared with observations.
Assessment of Offshore Wind Resources Within Japan's EEZ Using QuikSCAT Data
Ohsawa, Teruo ; Tanaka, Masahiro ; Shimada, Susumu ; Tsubouchi, Nobuki ; Kozai, Katsutoshi ;
Journal of Environmental Science International, volume 18, issue 8, 2009, Pages 841~845
DOI : 10.5322/JES.2009.18.8.841
In this paper, offshore wind resources within the Japan's EEZ (Exclusive Economic Zone) are assessed using wind speed data from the microwave scatterometer SeaWinds onboard QuikSCAT. At first, from the 10m-height wind speed from QuikSCAT, 60 m-height wind speed is estimated by using an empirical equation for height correction. Based on the 60 m-height wind speeds, annual energy Production is calculated under an assumption of installing 2 MW wind turbines every
. The annual energy production is then accumulated for the entire Japan's territorial waters and EEZ (
). As a result, it is shown that the total energy Production is estimated to be
TWh/yr. This offshore wind energy Potential within the EEZ is approximately 50 times higher than the actual annual electricity production in Japan.
Validation of Numerical Wind Simulation by Offshore Wind Extraction from Satellite Images
Kim, Hyun-Goo ; Hwang, Hyo-Jeong ; Lee, Hwa-Woon ; Kim, Dong-Hyuk ; Kim, Deok-Jin ;
Journal of Environmental Science International, volume 18, issue 8, 2009, Pages 847~855
DOI : 10.5322/JES.2009.18.8.847
As a part of effort to establish an offshore wind resource assessment system of the Korean Peninsula, a numeric wind simulation using mesoscale climate model MM5 and a spatial distribution of offshore wind extracted from SAR remote-sensing satellite image is compared and analyzed. According to the analyzed results, the numeric wind simulation is found to have wind speed over predication tendency at the coastal sea area. Therefore, it is determined that a high-resolution wind simulation is required for complicated coastal landforms. The two methods are verified as useful ways to identify the spatial distribution of offshore wind by mutual complementation and if the meteor-statistical comparative analysis is performed in the future using adequate number of satellite images, it is expected to derive a general methodology enabling systematic validation and correction of the numeric wind simulation.
Estimation on The Atmospheric Stability and Flow Characteristics of Planetary Boundary Layer in Wolryong Coastal Region
Jeong, Tae-Yoon ; Lim, Hee-Chang ; Kim, Hyun-Goo ; Jang, Moon-Seok ;
Journal of Environmental Science International, volume 18, issue 8, 2009, Pages 857~865
DOI : 10.5322/JES.2009.18.8.857
The physical properties of an atmospheric boundary layer in Wolryong, a west coastal region of Jeju, South Korea, in terms of the atmospheric stability and roughness length, is important and relevant to both engineers and scientists. The study is aiming to understand the atmospheric stability around this region and its effect on the roughness length. We calculate the Monin-Obukhov length(L) against 3 typical regions of the atmospheric condition - unstable regime (-5
) and stable regime (0.2
Wind Power Generation: Its Impact on Peak Time and Future Power Mix
Lee, Jin-Ho ; Kim, Su-Duk ;
Journal of Environmental Science International, volume 18, issue 8, 2009, Pages 867~876
DOI : 10.5322/JES.2009.18.8.867
Although renewable power is regarded a way to active response to climate change, the stability of whole power system could be a serious problem in the future due to its uncertainties such as indispatchableness and intermittency. From this perspective, the peak time impact of stochastic wind power generation is estimated using simulation method up to year 2030 based on the 3rd master plan for the promotion of new and renewable energy on peak time. Result shows that the highest probability of wind power impact on peak time power supply could be up to 4.41% in 2030. The impact of wind power generation on overall power mix is also analyzed up to 2030 using SCM model. The impact seems smaller than expectation, however, the estimated investment cost to make up such lack of power generation in terms of LNG power generation facilities is shown to be a significant burden to existing power companies.
Analysis on Siting Strategy for Offshore Wind Farm Based on National Wind Map and GIS
Kim, Hyun-Goo ; Song, Kyu-Bong ; Hwang, Sun-Young ; Yun, Jin-Ho ; Hwang, Hyo-Jeong ;
Journal of Environmental Science International, volume 18, issue 8, 2009, Pages 877~883
DOI : 10.5322/JES.2009.18.8.877
This study has analyzed the scale, location, resource potential and feasibility of offshore wind farm scientifically and systematically based on the national wind map and GIS. For long-term wind power development, this study pursues siting strategy building, selection of target area and deciding development priority as well as the presenting a basis for assessment that are necessary for policy decision making by making theme layers under GIS environment. According to the analysis after organizing technological development by stages, even if only the most suitable sites are developed among the area of offshore wind farm candidates that can be developed under the current technological standard, it has been evaluated as being able to develop about 3 times of the wind power dissemination target until 2012. It is expected that about 5% of territorial water area can be developed in a short-term future while the southern offshore area possessing relatively favorable wind resource than the western offshore has been identified as the most feasible site. While about 23% of territorial water area has been classified as potential area for offshore wind farm development in a long-term future, even Jeju Island and offshore of Ulsan possessing excellent wind resource have been analyzed as feasible sites. The feasibility assessment of offshore wind lam development established by this study is expected to assist national strategy building for accomplishing the wind power dissemination target.
Numerical Study on the Impact of the Spatial Resolution of Wind Map in the Korean Peninsula on the Accuracy of Wind Energy Resources Estimation
Lee, Soon-Hwan ; Lee, Hwa-Woon ; Kim, Dong-Hyuk ; Kim, Min-Jung ; Kim, Hyun-Goo ;
Journal of Environmental Science International, volume 18, issue 8, 2009, Pages 885~897
DOI : 10.5322/JES.2009.18.8.885
In order to make sure the impact of spatial resolution of wind energy map on the estimation of wind power density in the Korean Peninsula, the comparison studies on the characteristics of wind energy map with three different spatial resolutions were carried out. Numerical model used in the establishment of wind map is MM5 (5th generation Mesoscale Model) with RBAPS (Regional Data Assimilation and Prediction System) as initial and boundary data. Analyzed Period are four months (March, August, October, and December), which are representative of four seasons. Since high spatial resolution of wind map make the undulation of topography be clear, wind pattern in high resolution wind map is correspond well with topography pattern and maximum value of wind speed is also increase. Indication of island and mountains in wind energy map depends on the its spatial resolution, so wind patterns in Heuksan island and Jiri mountains are clearly different in high and low resolutions. And area averaged power density can be changed by estimation method of wind speed for unit area in the numerical model and by treatment of air density. Therefore the studiable resolution for the topography should be evaluated and set before the estimation of wind resources in the Korean Peninsula.
Classification of Wind Sector for Assessment of Wind Resource and Establishment of a Wind Map in South Korea
Jung, Woo-Sik ; Lee, Hwa-Woon ; Park, Jong-Kil ; Kim, Hyun-Goo ; Kim, Eun-Byul ; Choi, Hyun-Jung ; Kim, Dong-Hyuk ; Kim, Min-Jung ;
Journal of Environmental Science International, volume 18, issue 8, 2009, Pages 899~910
DOI : 10.5322/JES.2009.18.8.899
We classified wind sectors according to the wind features in South Korea. In order to get the information of wind speed and wind direction, we used and improved on the atmospheric numerical model. We made use of detailed topographical data such as terrain height data of an interval of 3 seconds and landuse data produced at ministry of environment, Republic of Korea. The result of simulated wind field was improved. We carried out the cluster analysis to classify the wind sectors using the K-means clustering. South Korea was classified as 8 wind sectors to the annual wind field.
Mathematical Models of Environmental Problems on the Electromagnetic Interference for Wind Turbines
Chang, Se-Myong ;
Journal of Environmental Science International, volume 18, issue 8, 2009, Pages 911~918
DOI : 10.5322/JES.2009.18.8.911
Electromagnetic interference (EMI) is defined as the interaction phenomena of electromagnetic waves scattered from a large structure or complex terrain. In this study, the propagation of linear wave is modeled with ray theory, direct simulation Monte Carlo (DSMC), and some classical theories on flat plates. The wave physics of reflection, refraction, and diffraction are simulated for the investigation of front and back scattering of the one-dimensional plane wave from a tower with ray theory and DSMC, respectively. The effect of rotating disk idealized from the real wind-turbine blades is modeled with a simplified version of the classical electromagnetic theory as well as DSMC based on the ray theory.
CFD Analysis on a Tall Building Augmented Wind Turbine
Jeon, Wan-Ho ; Yoon, Seong-Wook ; Kim, Wook ; Cho, Jang-Hyung ;
Journal of Environmental Science International, volume 18, issue 8, 2009, Pages 919~926
DOI : 10.5322/JES.2009.18.8.919
Renewable energy or green energy is a hot issue in theses days. Since wind resource can be endlessly supplied by nature, researchers and common people are interested in study how to use that resource at home or company. Especially, many architects have tried to integrate wind power generator for a part of building. So in this paper, three buildings installed wind power turbine are targed to CFD analysis and these buildings are Bahrain trade center, Discovery tower, and Pearl river tower. Bahrain trade center is the first building installed real wind turbine, Discovery tower is constructing at Texas, and Pearl river tower is designed and proved by china researchers. These buildings have very different type of wind power turbine and each turbine has different conditions f3r best power generation. Therefor this paper will focus on characteristic shape of buildings, wind power turbine type, and expected purpose of construction. Moreover, CFD analysis will show wind flow pattern and wind speed while wind is passing through wind turbine of three tall buildings. CFD analysis for three buildings make comparison the wind flow patterns with experimental result.
Noise Source of Large Wind Turbine
Shin, Hyung-Ki ; Bang, Hyung-Jun ;
Journal of Environmental Science International, volume 18, issue 8, 2009, Pages 927~932
DOI : 10.5322/JES.2009.18.8.927
Wind turbine noise become main environmental problem as wind energy have been installed all around. Noise from large wind turbine give annoyance to listener, moreover it increase loading to whole system by restricting blade tip speed. However accurate noise mechanism of wind turbine is not yet examined. This paper reviewed noise source and analysis theory. Broadband noise if main component of wind turbine noise and airfoil self noise is main noise source. These make acoustic analogy hard to apply for analysis. For this reason, experimental equation is method for wind turbine noise prediction up to now. Spectrum analysis shows that vortex shedding noise exists around
Hz. This region is most sensitive frequency range to human. Thus it is necessary to reduce this noise source.
The Current Status and the Prospects of Wind Energy
Jang, Moon-Seok ; Bang, Hyung-Joon ;
Journal of Environmental Science International, volume 18, issue 8, 2009, Pages 933~940
DOI : 10.5322/JES.2009.18.8.933
Recently, wind power generation is an emerging industry expanding its market rapidly thanks to the increasing need to solve the scarcity of fossil fuels and the risk of potential global warming. Wind power generation has shown to be an effective response plan to global warming, showing the most price competitiveness among the renewable energy sources by its higher efficiency. Therefore wind energy has attracted considerable attention as the industrial growth drive for the next generation. Considering Korea's high dependence of overseas energy resources, the importance of wind power is growing as the most effective alternative energy source to ensure energy security as well as becoming a key strategic industry for exports. In this study, the social and economic effects of the wind power industry is discussed and the current status and the future prospects of the wind energy market is also examined.