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강용혁(Kang Yong-Heack),김종보(Kim Jong-Bo) 한국태양에너지학회 1994 한국태양에너지학회 논문집 Vol.14 No.1
분사칼럼식 직접접촉 열교환기에 있어서 이차원 축대칭 이중유동 모델을 사용하여 연속유체와 작동유체만의 단일유동을 수치적으로 해석하므로써 완전한 이중유동 해석을 위한 토대를 마련하고 각유체의 분사방향, Aspect ratio 및 입구속도 변화에 따른 유동특성을 고찰하여 최대열전달을 가져오는 유동현상을 살펴보았다.<br/> 해석결과 연속유체의 경우 반경방향 분사가, 그리고 각 유체 모두 L/D 값이 클수록, 입구속도(Re)는 작을수록 최대열전달을 가져 오는 균일한 속도분포를 형성하는데 유리하였다. In order to a complete analysis of the two component flow in a spray column direct contact heat exchanger, each fluid, continuous fluid and working fluid, has been numerically analyzed with 2-dimensional axisymmetric two component flow model.<br/> The influences of injection direction, aspect ratio and inlet velocities have been investigated to consider flow characteristics and to achieve uniform velocity distribution with maxium heat transfer.<br/> Analyzed results are shown that radial injection for the continuous flow in<br/> advantageous in obtaining desirable uniform velocity distributions.<br/> As the aspect ratio increases and the inlet velocity decreases, flow patterns in a spray column are shown to be better uniform velocity distribution.
IEA SolarPACES 83차 집행위원회 및 Task 활동
강용혁(Yong-Heack Kang),이현진(Hyun-Jin Lee),이상남(Sang-Nam Lee),윤환기(Hwan-Ki Yoon),유창균(Chang-Kyun Yu) 한국태양에너지학회 2012 한국태양에너지학회 학술대회논문집 Vol.2012 No.11
SolarPACES is an international cooperative network bringing together teams of national experts from around the world to focus on the development and marketing of concentrating solar power systems (also known as solar thermal power systems). Currently SolarPACES has 20 members: Australia, Austria, Algeria, Brazil, China, Chille, Egypt, the European Commission, France, Germany, Israel, Italy, Mexico, Republic of Korea, South Africa, Spain, Switzerland, United Arab Emirates and United States of America. Technology development is at the core of the work of SolarPACES. member countries work together on activities aimed at solving the wide range of technical problems associated with commercialization of concentrating solar technology, including large-scale system tests and the development of advanced technologies, components, instrumentation, and systems analysis techniques. In addition to technology development, market development and building of awareness of the potential of concentrating solar technologies are key elements of the SolarPACES program. The Implementing Agreement specifies broad "Tasks," or thematic areas of work. SolarPACES currently has three ongoing tasks, focusing on concentrating solar electric power systems (Task I), solar chemistry research (Task II), and solar technology and applications (Task III). Many SolarPACES activities involve close cooperation among member countries (either through sharing of task activities or, occasionally, cost-sharing), although some cooperation is limited to sharing of information and results with other participants. In this paper, contents of 83th SolarPACES ExCo Meeting and tasks are introduced. And furture activies in the SolarPACES are introduced.
강용혁(Kang, Yong-Heack),김진수(Kim, Jin-Soo),김종규(Kim, Jong-Kyu),이상남(Lee, Sang-Nam),유창균(Yu, Chang-Kyun),윤환기(Yoon, Hwan-Ki) 한국신재생에너지학회 2007 한국신재생에너지학회 학술대회논문집 Vol.2007 No.06
KIER have been developing high-temperature solar technology, especially the solar thermal power generation system, since the early of 1990s. In 1994, the first research on high temperature solar technology started with PTC technology. At the moment the most advanced 10kW dish system is under demonstration for 10kW solar thermal power generation. Test results showed about 19.2% solar to electricity average efficiency. Another research activities of KIER is hybrid power generation. For hybridization, solar and LFG(landfill gas) are used. Another hybrid solar system is with solar chemical reaction. In this system, power unit is gas turbine, and the heat content of fuel(like natual gas) is upgraded by solar energy through chemical reaction. The latest project on solar thermal power generation is for 1 MW power tower system. This is the Korea-China Joint project.
강용혁(Kang Yong-Heack),김종규(Kim Jong-Kyu),이현진(Lee Hyun-Jin) 한국태양에너지학회 2011 한국태양에너지학회 학술대회논문집 Vol.2011 No.4
SolarPACES is an international cooperative network bringing together teams of national experts from around the world to focus on the development and marketing of concentrating solar power systems (also known as solar thermal power systems). It is one of a number of collaborative programs, called Implementing Agreements, managed under the umbrella of the International Energy Agency to help find solutions to worldwide energy problems. Technology development is at the core of the work of SolarPACES. Member countries work together on activities aimed at solving the wide range of technical problems associated with commercialization of concentrating solar technology, including large-scale system tests and the development of advanced technologies, components, instrumentation, and systems analysis techniques. In addition to technology development, market development and building of awareness of the potential of concentrating solar technologies are key elements of the SolarPACES program The Implementing Agreement specifies broad "Tasks," or thematic areas of work. SolarPACES currently has three ongoing tasks, focusing on concentrating solar electric power systems (Task Ⅰ), solar chemistry research (Task Ⅱ), and solar technology and applications (Task Ⅲ). An Operating Agent, nominated by the ExCo, is responsible for overseeing the work of each task. Each task maintains a detailed program of work that defines all task activities, including their objectives, participants, plans, and budgets. In addition to technical reports of the activities and their participants, accomplishments and progress are summarized in the SolarPACES annual report. Many SolarPACES activities involve close cooperation among member countries (either through sharing of task activities or, occasionally, cost-sharing), although some cooperation is limited to sharing of information and results with other participants. In this paper, structure, works, and members of SolarPACES and Korean activies in the SolarPACES are introduced