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식물성 플랑크톤에 대한 자외선 발광다이오드의 살균특성 분석
최성국(Sung-Kuk Choi),김성욱(Sung-Wook Kim),박대원(Dae-Won Park),길경석(Gyung-Suk Kil) 한국마린엔지니어링학회 2009 한국마린엔지니어링학회 학술대회 논문집 Vol.2009 No.-
Ship ballast water includes variety of marine species such as aquatic creatures, germs and bacteria. Through in-out port of ships, the ballast water contaminate sea and destruct marine ecology system. The International Maritime Organization(IMO) adopted the convention on ballast water management, February, 2004 and all ships should equip with a ballast water treatment system from 2010. Presently, filtering, ultra-violet(UV), ozone and electrolysis methods for ballast water treatment are being used and the UV method has advantages of no residual toxicities and disinfection by products(DBPs). In this paper, we analyzed disinfection characteristics for phytoplankton using deep UV LED ; 255[㎚], 265[㎚] and 280[nm] as the basic study on a ballast water treatment system.
최성국(Sung-Kuk Choi),최재성(Jae-Sung Choi),정광석(Kwang-Seok Jung),장운용(Un-Yong Jang),길경석(Gyung-Suk Kil) 한국마린엔지니어링학회 2009 한국마린엔지니어링학회 학술대회 논문집 Vol.2009 No.-
This paper described the sea-water penetration of high brightness LEDs depending on wavelength to develop a LED-fish attracting lamp. For the analysis, we fabricated a blue and a white 30W LED modules. The modules set under the sea-water, and the light intensity emitted from the module was measured by a spectrometer as a function of distance. Experimental results shows that the penetration rates were almost same in the air, but the blue light of 470nm was the best in the sea-water.
최성국(Sung-Kuk Choi),박대원(Dae-Won Park),길경석(Gyung-Suk Kil),박희철(Hee-Chul Park),조은제(Eun-Je Jo) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.5월
This paper describes the proceeding experimental results to replace the 32 [W] fluorescent lamp installed in subway train to a LED module. We fabricated 25 [W] LED modules to meet the illuminance 300 [lx] specified in the standard for subway train. After the installation of LED modules, comparative analysis with conventional fluorescent lamps was carried out. From the experimental results, illuminances on the height of 0.85 [m] and 1 [m] above floor were 323 [lx] and 360 [lx], respectively. These illuminances satisfied the requirement 300 [lx]. By the application of 25 [W] LED module as a light source in subway train, energy saving about 22 [%] compared with 32 [W] fluorescent is acquired. Also, low cost of maintenance is expected due to 8 times longer lifetime 50,000 hours of LED than that 6,000 hours of fluorescent lamp.