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조덕기 대한설비공학회 2003 설비저널 Vol.32 No.8
태양에너지 기술이 국내에서도 하루 빨리 정착, 실용화 할 수 있도록 국내 태양에너지 자원을 보다 과학적인 방법으로 정확하게 정착. 평가하는데 그 목표를 두었다.
PV시스템 설치를 위한 경사면 태양광에너지 분석에 관한 연구
조덕기,강용혁,Jo, Dok-Ki,Kang, Young-Heack 한국태양에너지학회 2007 한국태양에너지학회 논문집 Vol.27 No.1
The amount of incident rays over inclination according to direction has been widely utilized as important data in installing photovoltaic systems. This is because the performance of the photovoltaic systems in much affected by angle and direction of incident rays. Recognizing that factors mentioned above are of importance, actual experiment on the moving route of the sun have been performed in this research to obtain the angle of inclination with which the maximum incident rays can be absorbed. After all, the standard for designing highly optimized photovoltaic systems will be provided for designers and employees working in the photovoltaic module related industries.
태양광에너지 측정을 통한 우리나라 주요 도시의 Global Dimming 현상 분석에 관한 연구(대기의 청명도 분석을 중심으로)
조덕기,강용혁 한국태양에너지학회 2007 한국태양에너지학회 논문집 Vol.27 No.2
Since the atmospheric clearness index is main factor for evaluating global-dimming of atmosphere environment, it is necessary to estimate its characteristics all over the major cities in Korea. We have begun collecting clearness index data since 1982 at 16 different cities and considerable effort has been made for constructing a standard value from measured data at each city. The new clearness data for global-dimming analysis will be extensively used by evaluating atmospheric environment as well as by solar PV application system designer or users. From the results, we can conclude that1) Yearly mean 61.9% of the atmospheric clearness index was evaluated for clear day all over2) A significant difference of atmospheric clearness index is observed between 1982-1989 and 1990-1997, 1998-2005 through 16 different cities in Korea.
품질관리시스템을 활용한 태양에너지자원 신뢰성 향상에 관한 연구
조덕기,강용혁,Jo, Dok-Ki,Kang, Young-Heack 한국태양에너지학회 2007 한국태양에너지학회 논문집 Vol.27 No.1
The Data quality management system(DQMS) organizes and helps manage and process time sequence data usually collected in monitoring networks and programs. DQMS places particular emphasis on data qualify while maintaining a highly organized and convenient structure for data. It operates with in a flexible and powerful commercial relational data base environment which can readily link to other software platforms from local spreadsheets to network server. The Korea Institute of Energy Research(KIER) has been solar radiation data since May, 1991 for 16 different locations. KIER's new data is expected to be extensively used by designer and researchers of solar systems in lieu of unreliable old ones. Unfortunately, the quality of the data has not always been properly mentioned. The purpose of this study is to systematically identify errors in such data set using DQMS in an effort to rehabilitate error-ridden old data. DET successfully uncovered solar radiation data that had questionable quality.
인공위성을 이용한 동북아시아 지역의 태양광자원 정밀조사 (중국지역 분석을 중심으로)
조덕기,강용혁,Jo, Dok-Ki,Kang, Young-Heack 한국태양에너지학회 2007 한국태양에너지학회 논문집 Vol.27 No.3
Since the solar radiation is the main input for sizing any solar photovoltaic system, it will be necessary to understand and evaluate the solar radiation data. The works presented here is the analysis of solar radiation data for East-North Asia areas. The data utilized in the analysis consist of the global radiation on horizontal surface, measured at 2 different stations during 3 years for the period from 2002 to 2004 and estimated using satellite at 27 different stations over the China and Mongolia. Also the measured data has been collected at 16 different stations all of the South Korea and estimated using satellite at 12 different stations over the North Korea from 1982 to 2005. The Result of analysis shows that the annual-average daily global radiation on the horizontal surface is $3.57\;MJ/m^2$. We conclude, based on the analysis, that East-North Asia areas have sufficient solar energy resources for the photovoltaic power generation system.
집광식 태양광발전시스템 설치를 위한 태양광자원 성분분석에 관한 연구
조덕기,강용혁,Jo, Dok-Ki,Kang, Young-Heack 한국태양에너지학회 2007 한국태양에너지학회 논문집 Vol.27 No.2
Knowledge of the solar radiation components are essential for modeling many solar photovoltaic systems. This is particularly the case for applications that concentrate the incident energy to attain high photo-dynamic efficiency achievable only at the higher intensities. In order to estimate the performance of concentrating PV systems, it is necessary to know the intensity of the beam radiation, as only this component can be concentrated. The Korea Institute of Energy Research(KIER) has began collecting solar radiation component data since August, 1996. KIER's component data will be extensively used by concentrating PV system users or designers as well as by research institutes.
경험적 예측모형을 통한 우리나라 주요 도시의 대기청명도 평가
조덕기,최인수 한국경영과학회 1998 韓國經營科學會誌 Vol.23 No.4
Since the atmospheric clearness index is one of the main factors for evaluating atmospheric circumstances, it is necessary to estimate its characteristics all over the cities in Korea. This study was focused on the evaluation of atmospheric condition for each 15 cities in terms of respectively or mutually analyzes clearness factor that was predicted on the assumed clear day with the model using factors such as average global insolation, cloud amount, and duration of sunshine measured for two years between 1996 and 1997. The new clearness index data will be extensively used by atmospheric circumstances analysis as well as by solar application designers or users.
국내 태양광시스템 설치지역을 위한 일조시간에 의한 일사예측에 관한 연구
조덕기,윤창열,김광득,강용혁 한국태양에너지학회 2011 한국태양에너지학회 논문집 Vol.31 No.4
Solarradiationdataarethebestsourceofinformationforestimatingaverageincidentradiation.Lackingthis ordatafrom nearbylocationsofsimilarclimate,itispossibletouseempiricalrelationshipstoestimateradiation from daysofhoursofbrightsunshine. Itisnecessarytoestimatetheregressioncoefficientsinordertopredictthedailyglobalradiationonahorizontal surface.Thereforemanydifferentequationshaveproposedtoevaluatethem forcertainareas.Inthisworkanew correlation hasbeen madeto predictthesolarradiation for16differentareasoverKoreaby estimating the regressioncoefficientstakingintoaccounthoursofbrightsunshine. Particularly,theproposedstraightlineregressionmodelshowsreliableresultsforestimatingtheglobalradiation onahorizontalsurfacewithmonthlyaveragedeviationof-0.2to+0.5% andeachstationannualaveragedeviation of-1.6to+1.7% from measuredvalues.