http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이수재(Soojae Lee) 대한지질학회 2021 대한지질학회 학술대회 Vol.2021 No.10
본 발표에서는 국내에서 지질유산을 법제도적으로 접근시 고려할 사항을 논의한다. 문화재청과 환경부에서 지질유산을 다루고 있지만 양자가 접근하는 방식은 많은 차이가 있다. 지질유산의 법정 정의는 아직 없으며, 현재 자연공원법의 지질공원장에서 해당 용어를 사용하고 있다. 문화재보호법과 매장문화재법에서는 지질유산의 용어 없이 다른 특정 용어를 사용하고 있으며, 자연유산법(제안)에도 지질유산 용어가 없다. 국외에서는 지질유산에 대하여 다양한 법령과 제도가 있으며, 지질학자들의 참여와 활동도 많다. 본 발표에서는 국내에서 향후 지질유산을 법제도로 다룰 때 고려할 사항과 지질학계의 할 일을 그리고 사회에 공헌하는 방안 등을 간략히 다룬다.
이수재(Lee, Soojae),최대현(Choi, Daehyun),전희권(Jun, Heekwon) 한국신재생에너지학회 2010 한국신재생에너지학회 학술대회논문집 Vol.2010 No.06
Fuel Cell cogeneration system is a promising technology for generating electricity and heat with high efficiency of low pollutant emission. We have been developed 5kW class fuel cell cogeneration system for commercial and residential application. The fuel processor is a crucial part of producing hydrogen from the fossil fuels such as LNG and LPG. The 5kW class high efficiency fuel processor consists of steam reformer, CO shift converter, CO preferential oxidation(PrOx) reactor, burner and heat exchanger. The one-stage CO shift converter process using a metal oxide catalyst was adopted. The efficiency of 5 kW class fuel processor shows 75% based on LHV. In addition, for the purpose of continuous operation with load fluctuations in the commercial system for residential use, load change of fuel processor was tested. Efficiency of 30%, 50%, 70% and 100% load shows 75%, 75%, 73% and 72%(LHV), respectively. Also, during the load change conditions, the product gas composition was stable and the outlet CO concentration was below 5 ppm. The Fuel processor operation was carried out in residential fuel cell cogeneration system with fuel cell stack under dynamic conditions. The 5kW class fuel processor have been evaluated for long-term durability and reliability test including with improvement in optimal operation logic.
Field study of 5kW class PEMFC system
이수재(Lee, SooJae),최대현(Choi, Dae Hyun),전희권(Jun, HeeKwon) 한국신재생에너지학회 2011 한국신재생에너지학회 학술대회논문집 Vol.2011 No.05
The residential Fuel Cell system has high efficiency of 85% with transferring natural gas to electrical power and heat, directly and it is a friendly environmental new technology in that CO₂ emission can reduce 40% compared with conventional power generator and boiler. The residential fuel cell system consists of two main parts which have electrical and hot storage units. The electrical unit contains a fuel processor, a stack, an inverter, a control unit and balance of plant(BOP), and the cogeneration unit has heat exchanger, hot water tank, and auxiliaries. 5kW class fuel process was developed and tested from 2009, it was evaluated for long-term durability and reliability test including with improvement in optimal operation logic. Stack development was crried out through improvement of design and evaluation protocol. Development of system controller was successfully accomplished through strenuous efforts and original control logic was optimized in 5kW class PEMFC system. In addition, we have been focused on development of system process and assembly technology, which bring about excellent improvement of reliability of system. The 5kW class PEMFC system was operated under dynamic conditions for 1,000 hours and it showed a good performance of total efficiency and durability.
이수재 ( Soojae Lee ),정진향 ( Jinhyang Jung ),김지아 ( Jia Kim ),김정진 ( Jungjin Kim ) 한국고등직업교육학회 2023 한국고등직업교육학회논문집 Vol.21 No.1
대학의 중장기 발전계획과 졸업생의 요구에 따라 미래지향적 사회 비전을 반영한 Y대학교의 특성화 교양교육시스템 구축 및 적용 연구가 필요한 실정이다. 이에 따라 본 연구에서는 Y대학교 교양교육 프로그램의 역할을 재정립하고, 교양교육의 질을 체계적으로 높일 수 있는 기반을 마련하고자 하였다. In accordance with the university’s medium to long-term development plan and the implementation of the desired qualities of graduates, there is a demand for the establishment and applicable research of a specialized liberal arts education system at Y University that reflects a future-oriented social vision. In line with this, the goal is to redefine the role of Y University’s liberal arts education program and provide a foundation of resources to systematically enhance the quality of liberal arts education.