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조미령(M R Cho),전상규(S K Jeon),신상욱(S W Shin),이세현(S H Lee),노재엽(J Y Noh),최석준(S J Choi),황명근(M K Hwang),양승용(S Y Yang) 한국조명·전기설비학회 2008 한국조명·전기설비학회 학술대회논문집 Vol.2008 No.5월
BLUs(Backlight Units) are major component in LCD(Liquid Crystal Display) industry which occupies 90% or more of worldwide FPD(Flat Panel Display) market. And BLU market is expected to be expanded continuously according to the trend of miniaturization, slimness, low power consumption and low weight. The larger the BLU market scale, the more important standardization of performance evaluation techniques to clearly prescribe the product specification. This document is a generic specification of measurement methods of LED BLU for LCDs. It defines general procedures for quality assessment and gives general rules for measuring methods of LED BLU for LCDs.
형광등 대체용 LED조명과 CNT조명에 대한 전기적ㆍ광학적특성의 비교고찰
황명근(M-K Hwang),임종민(J-M Lim),신상욱(S-W Shin),노재엽(J-Y Roh),조미령(M-R Cho),이세현(S-H Lee),전상규(S-K Jeon),최석준(S-J Choi),이진우(C-W Yi) 한국조명·전기설비학회 2008 한국조명·전기설비학회 학술대회논문집 Vol.2008 No.5월
본 논문에서는 LED(light emitting diode)조명과 CNT(carbon nano-tube)조명에 대한 전기적인 특성과 광학적 특성을 측정하여 비교하고 고찰하였다. 특히 IES format 파일을 사용하여 각각의 조명등기구에 대한 LID(luminous intensity distribution) 분석과 조도 시뮬레이션을 수행하여 최대 및 최소, 그리고 평균조도 등을 분석하였다. 향후 LED 및 CNT 신광원은 면조명으로의 관련 기술기준 및 규격의 작성시 참고자료로 활용될 것으로 판단된다. In this paper, we have measured and compared the optical and electrical characteristics of LED(light emitting diode) and CNT(carbon nano-tube) lightings. Especially, the IES format files are used for each of the luminaire LID(luminous intensity distribution) analysis and light level simulation for analyze the maximum, minimum, and average light level. In the future, when CNT and the LED based lighting technology standards are writing, this data will be used in judging.
권순광(S. K. Kwon),강만곤(M. G. Kang),최준혁(H. C. Choi),이중연(J. Y. Lee),전상규(S. G. Jeon) 유공압건설기계학회 2012 유공압건설기계학회 학술대회논문집 Vol.2012 No.6
Seawater reverse osmosis(SWRO) desalination plants are being expanded to apply due to the advantages of lower energy consumption. The desalination plants tend to be larger considering the cost of capital, operation and maintenance, the research and development for high efficiency components is being accelerated. Hyosung Goodspings Inc. is developing a high efficiency energy recovery system for saving electric power consumption in the plants. Direction control valves of the energy recovery system have novel structure which combine poppets and spools to minimize leakage. The valves is able to reduce external power required to change the direction using pressure balancing parts. To apply the energy recovery system in the large plants, multiple energy recovery device is connected in parallel. The pilot scale system of parallel structure was manufactured, and it was tested the performance by a pilot plant.
역삼투압식 해수담수화플랜트용 용적형 에너지회수장치 개발
권순광(S. K. Kwon),강만곤(M. G. Kang),최현철(H. C. Choi),전상규(S. G. Jeon) 유공압건설기계학회 2011 유공압건설기계학회 학술대회논문집 Vol.2011 No.6
ERDs(Energy Recovery Devices) helps to lower specific water cost by saving power consumption of the high pressure pumps in SWRO(Seawater Reverse Osmosis) desalination plants thus making the process more efficient and cheaper. This paper introduces a design of directional control valve for the ERD, which can realize high efficiency with the sliding poppet valve type by emans of the ultimate leakage protection in a pressure exchanger. The poppet valves are inherently the best method for leakage protection. And the ERD control valve is designed so that four poppets are controlled simultaneously by a single shaft. It is also designed to ensure the minimization of leakage as well as pressure loss. The pilot scale test(7.2m³/h) successfully showed high efficiency of 97% with this mechanism.
조미령(M R Cho),전상규(S K Jeon),이현영(H Y Lee),김도환(D H Kim),나종혁(J H Na),양승용(S Y Yang) 한국조명·전기설비학회 2010 한국조명·전기설비학회 학술대회논문집 Vol.2010 No.5월
Recently LED has been widely applied in automobile Lightings There are new applications in the headlamp for automiblies. Standard setting is on a fast track. The larger LED headlight market scale, the more important standardization of performance evaluation techniques to clearly prescribe the product specification. The results are compared with national and international standards of LED headlamp for automobile.
조미령(M R Cho),전상규(S K Jeon),양승용(S Y Yang) 한국조명·전기설비학회 2009 한국조명·전기설비학회 학술대회논문집 Vol.2009 No.5월
LED Lightings market remains highly fragmented, encompassing many niche applications. Architectural lighting is the largest and many applications are for colored (R, G, B) light. Hundreds of companies worldwide are participating at the luminaire or fixture level. Standard setting is on a fast track. The larger LED lightings market scale, the more important standardization of performance evaluation techniques to clearly prescribe the product specification.