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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.
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.
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.
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.
국내 고집광 태양에너지 발전단지 건설을 위한 법선면 직달일사량 자원조사
조덕기(Jo Dok-Ki),강용혁(Kang Young-Heack) 한국태양에너지학회 2008 한국태양에너지학회 학술대회논문집 Vol.- No.-
Since the direct normal insolation is a main factor for designing any solar thermal power system, it is necessary to evaluate its characteristics all over the country. We have begun collecting direct normal insolation data since December 1992 at 16 different locations and considerable effort has been made for constructing a standard value from measured data at each station. KIER(Korea Institute of Energy Research)'s new data will be extensively used by solar thermal concentrating system users or designers as well as by research institutes. From the results, we can conclude that 1) Yearly mean 2.67 ㎾h/㎡/day of the direct normal insolation was evaluated for all days all over the 16 areas in Korea. 2) All day's direct normal insolation of spring and summer were 2.91 ㎾h/㎡/day and 2.23 ㎾h/㎡/day, and for fall and winter their values were 2.78 ㎾h/㎡/day and 2.77 kWh/㎡/day respectively. So, spring, fall and winter were higher, and summer was lower than the yearly mean value.
조덕기(Jo Dok-Ki),강용혁(Kang Young-Heack) 한국태양에너지학회 2008 한국태양에너지학회 논문집 Vol.28 No.1
Since the direct normal insolation is a main factor for designing any solar thermal power system, it is necessary to evaluate its characteristics all over the country. We have begun collecting direct normal insolation data since December 1992 at 16 different locations and considerable effort has been made for constructing a standard value from measured data at each station. KIER(Korea Institute of Energy Research)'s new data will be extensively used by solar thermal concentrating system users or designers as well as by research institutes. From the results, we can conclude that 1) Yearly mean 2.67 ㎾h/㎡/day of the direct normal insolation was evaluated for all days all over the 16 areas in Korea. 2) All day's direct normal insolation of spring and summer were 2.91 ㎾h/㎡/day and 2.23 ㎾h/㎡/day, and for fall and winter their values were 2.78 ㎾h/㎡/day and 2.77 ㎾h/㎡/day respectively. So, spring, fall and winter were higher, and summer was lower than the yearly mean value.
국내 태양광시스템 설치를 위한 수평면 전일사량과 일조시간 정밀조사
조덕기(Jo Dok-Ki),윤창열(Yun Chang-Yeol),김광득(Kim Kwang-Deuk),강용혁(Kang Young-Heack) 한국태양에너지학회 2011 한국태양에너지학회 논문집 Vol.31 No.3
Since the horizontal global radiation and hours of bright sunshine are a main factor for designing photovoltaic system, it is necessary to evaluate its characteristics all over the country. The work presented here are the investigation of horizontal global radiation and hours of bright sunshine in Korea. The data utilized in the investigation consist of horizontal global radiation and hours of bright sunshine collected for 28 years(1982.12~2009.12) at measuring stations across the country. The analysis shows that the annual-average daily horizontal global radiation is 3.61㎾h/m2 and the annual-average daily hours of bright sunshine is 5.1 Hrs in Korea. We also constructed the contour map of hours of horizontal global radiation and hours of bright sunshine in Korea by interpolating actually measured data across the country.
조덕기(Jo Dok-Ki),이태규(Lee Tae-Kyu),전일수(Chun Il-Soo),전홍석(Jeon Hong-Seok),오정무(Auh Chung-Moo) 한국태양에너지학회 1996 한국태양에너지학회 논문집 Vol.16 No.2
측정지의 고도는 일사량 측정에 영향을 주는 중요한 요소이다. 대기중에 내포되어 있는 영속성개스 즉, 오존과 수증기 등은 대기의 순수한 혼합물 성분은 그 농도가 고도와 밀접한 함수관계를 갖기 때문에 해당 측정지 고도는 그 지역의 대기를 구성 하고 있는 성분에 상대적으로 비례하여 일사에 영향을 준다.<br/> 이에따라 소백산과 그 인접 저지대인 풍기를 대상으로 일사강도를 측정하여 지역별 일사량자원의 특성과 향후 에너지자원으로서의 가능성을 목표로 두고 고지대와 저지대사이의 상호 비교가 가능하도록 하였다. 현지 측정사업의 내용을 중심으로 지금까지 나타난 결과를 살펴보면,<br/> 1) 소백산의 연평균 수평면 전일사량 조건은 청명한 날을 기준으로 하루에 4,093 kcal/m²로 나타났다.<br/> 2) 소백산에서의 일사강도는 인접 저지대인 풍기보다 6~7% 높게 나타났다.<br/> 3) 대기청명도는 동일한 위도상인 소백산과 풍기지역간의 격차가 현저하게 존재하였다.<br/> 는 접으로 요약된다. Site elavation is one of the major factors which is influencing the incoming insolation. Because nonpermanent gases like ozone, water vapor are unmixed components of the atmosphere and their concentrations are function of height, the site elevation effects the relative proportion of the atmospheric constituents.<br/> We have measured solar radiation on Sobaek (1,350m) and in Poonggi area (280m). These values were compared to investigate the their charateristics and the potential for the solar utilization as an alternative energy for both high altitude area and low altitude area.<br/> From the results, we conclude that<br/> J) Yearly mean 4,093 kcal/m². day of the horizontal global radiation in Mt. Sobaek was evaluated for clear day.<br/> 2) Insolation on Mt. Sobaek is 6~ 7% higher than Poonggi area during summer and winter seasons.<br/> 3) A significant difference of atomospheric clearness index is observed between Mt. Sobaek and Poonggi area at the same latitude.
국내 태양광시스템 설치를 위한 수평면 전일사량과 운량 정밀조사
조덕기(Jo Dok-Ki),강용혁(Kang Young-Heack) 한국태양에너지학회 2010 한국태양에너지학회 논문집 Vol.30 No.3
Since the horizontal global radiation and cloud cover are a main factor for designing any solar photovoltaic system, it is necessary to evaluate its characteristics all over the country. The work presented here are the investigation of horizontal global radiation and cloud cover in Korea. The data utilized in the investigation consist of horizontal global radiation and cloud cover collected for 27 years(1982. 12~2008. 12) at measuring stations across the country. The analysis shows that the annual-average daily horizontal global radiation is 3.61 ㎾h/㎡ and the annual-average daily cloud cover is 5.1 in Korea. We also constructed the contour map of cloud cover in Korea by interpolating actually measured data across the country.