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바이오매스와 SRF를 이용한 이중유동층 가스화기의 최적운전조건 도출
윤형철(Hyungchul Yoon),조성호(Sungho Cho),이덕진(Dockjin Lee),문고영(Goyoung Moon),조순행(Soonhaing Cho) 한국신재생에너지학회 2016 신재생에너지 Vol.12 No.4
This study has a focus on deriving the optimal operating conditions of biomass and waste plastic film SRF under dual fluidized bed gasification and on its domestic commercialization. From the analysis results, it was proven that the carbon conversion of biomass was optimized as 81% at 826℃ with 1,334 g/hr steam stream and 5.56 L/min air stream. On the other hand, that of waste plastic film SRF was 71% at 750℃ with 754 g/hr steam stream and 18.8 L/min air stream. In case of operation on waste plastic film SRF, temperature should be under 750℃ to prevent from agglomeration of bed materials.
윤형철(Hyungchul Yoon),양유영(Youyoung Yang),이현재(Henzeh Leeghim) 한국항공우주학회 2018 韓國航空宇宙學會誌 Vol.46 No.7
본 논문에서는 항공기 자동 공중급유를 위해 영상기반 상대 항법 시스템을 구현한다. 급유기와 피급유기는 프로브-드로그 방식의 공중급유를 가정하며 상대항법은 피급유기가 드로그에 대한 상대정보를 획득하며 진행한다. 드로그로부터 상대정보를 획득하기 위해 드로그 형태를 규정하고 IR카메라를 이용한 영상처리를 진행한다. 영상처리를 통해 얻은 드로그의 정보로부터 Gaussian Least Squares Differential Correction(GLSDC) 및 Levenberg-Marquardt(LM)을 이용한 상대항법을 진행하고 시뮬레이션을 통해 두 알고리즘의 분석을 수행한다. In this paper, a vision-based relative navigation system is addressed for autonomous aerial refueling. In the air-to-air refueling, it is assumed that the tanker has the drogue, and the receiver has the probe. To obtain the relative information from the drogue, a vision-based imaging technology by infra-red camera is applied. In this process, the relative information is obtained by using Gaussian Least Squares Differential Correction (GLSDC), and Levenberg-Marquadt(LM), where the drouge geometric information calculated through image processing is used. These two approaches proposed in this paper are analyzed through numerical simulations.