저온영역에서 석탄의 탈휘발 및 자연발화 특성 연구

윤성민,이석형,안태휘,서명원,이상원,김대성,문태영,박성진,윤상준,문지홍,이재구,주종훈,라호원,Sung Min Yoon,Seok Hyeong Lee,Tae Hwi An,Myung Won Seo,Sang Won Lee,Dae Sung Kim,Tae-Young Mun,Sung Jin Park,Sang Jun Yoon,Ji Hong Moon,Jae Goo Lee 한국청정기술학회 2023 청정기술 Vol.29 No.4

세계적으로 석탄은 다른 에너지원에 비해 매장량이 풍부하여 다양한 에너지원으로 사용되고 있다. 기존 석탄 이용 방식에서 발생하는 환경적인 문제를 해결하기 위해 청정 석탄 활용 기술 개발이 이루어지고 있으며 대표적인 기술로 IGCC발전 기술이 있다. IGCC 발전에서 사용되는 석탄은 CMD 공정에서 열풍을 동시에 공급하여 건조, 분쇄가 이루어지고 있으나, 공급되는 열풍의 온도가 너무 높을 경우, 탈휘발, 자연발화 현상이 발생하게 되고 이로 인한 CMD 공정의 안정적인 운전을 저하시킨다. 본 연구에서는 유연탄 9종을 이용하여 탈휘발, 자연발화 개시온도를 측정하고 석탄 특성분석결과와 함께 상관관계를 알아보고자 하였다. 탈휘발 현상의 경우 350 ~ 400 ℃ 사이에서 6종 석탄의 탈휘발이 확인되었고 400 ℃ 이상의 온도에서 3종의 석탄 탈휘발을 확인하였다. 자연발화의 경우 100 ℃ 이하에서 1종의 석탄, 100 ~ 150 ℃ 사이에서 6종의 석탄, 150 ℃ 이상에서 2종 석탄의 자연발화를 확인하였다. 측정한 개시온도를 석탄 분석 결과 중 Oxygen, Moisture, Fe₂O₃, CaO, H/C Ratio, O/C Ratio와 비교하여 상관관계를 확인하였다. 회귀분석으로 각 개시온도의 회귀계수와 결정계수를 계산하였으며, FC/VM 데이터의 52.44%가 탈휘발 개시온도에 대해, Fe₂O₃ 데이터의 59.10%가 자연발화 개시온도에 대해 영향을 주는 것에 대한 유의한 결과를 확인 하였다. Coal is abundantly available compared to other energy sources and is used as a versatile energy resource worldwide. To address the environmental issues stemming from conventional coal utilization, efforts are underway to develop clean coal utilization technologies, with IGCC technology being a notable example. In IGCC plants, coal is subjected to a CMD process where both drying and pulverization are achieved by supplying hot air. However, if the temperature of the supplied hot air is excessively high, it can lead to devolatilization and spontaneous combustion, thereby compromising the stable operation of the CMD process. This study aimed to measure the devolatilization and spontaneous combustion temperatures of different types of bituminous coal, and to explore their correlations with the characteristics of the coals. Six coal types exhibited devolatilization between 350 and 400 ℃, while three coal types showed devolatilization at temperatures exceeding 400 ℃. Spontaneous combustion ℃curred in one coal type below 100 ℃, six coal types between 100 and 150 ℃, and two coal types above 150 ℃. The measured initiation temperatures were compared with the coal characteristics including the oxygen, moisture, Fe₂O₃, and CaO content, the H/C ratio, and the O/C ratio to establish correlations. Regression analysis was used to calculate the regression coefficients and determination coefficients for each ignition temperature. It was found that 52.44% of the FC/VM data significantly influenced the volatile matter ignition temperature, and 59.10% of the Fe₂O₃ data significantly affected the spontaneous combustionignition temperature.

교육시설에 적용 가능한 태양열 흡수식 냉각 시스템

윤성민,백인수,한영태,남효갑,Youn, Sung-Min,Paek, In-Su,Han, Young-Tae,Nam, Hyo-Gab 한국교육시설학회 2011 敎育施設 Vol.18 No.3

Performance of a small-capacity solar absorption cooling system was investigated experimentally. Ten sets of evacuative-tube solar-heat collectors and a 5 kW single-stage absorption cooler were combined to produce a hybrid cooling system. The performance of the cooling system was measured using a tim-coil unit installed in a small plastic storage. It was found from the test on a sunny day of May that when the temperature of the hot water supplied from the solar collectors to the generator of the absorption cooler reached $60^{\circ}C$, the absorption cooler started cooling and the cold water temperature measured from the fan-coil unit reached $18^{\circ}C$. The COP, which is defined as the ratio of the cooling power to the total electrical power input was higher than 1.0.

저등급 석탄연료를 활용한 가스화 특성 연구

윤성민(Sung Min Yoon),서명원(Myung Won Seo),문태영(Tae Young Mun),문지홍(Ji Hong Moon),윤상준(Sang Jun Yoon),이재구(Jae Goo Lee),김재호(Jae Ho Kim),김용구(Yong Ku Kim),라호원(Ho won Ra) 한국신재생에너지학회 2018 한국신재생에너지학회 학술대회논문집 Vol.2018 No.4

중국법제에서의 선하증권과 상환없는 화물인도에 관한 고찰

윤성민(Sung-min Yun),김종칠(Chill-jong Kim) 한국국제상학회 2016 國際商學 Vol.31 No.4

국제운송시스템의 고속화 및 선진화로 인한 국제무역환경의 발전은 전통적인 선하증권의 기능상에 많은 변화를 초래시키고 있는데, 실제로 근거리 무역상거래의 활성화로 인해 원본 선하증권보다 물품이 먼저 수입국에 도착하는 경우로 인해 당사자의 편의를 위하여 권리포기 선하증권 등을 이용하는 것이 보편적이다. 현재 최대무역국으로 부상한 중국과의 거래는 지속적으로 증가하고 있고, 중국에서 편법 적으로 선하증권 없이 물품의 인도가 되는 경우가 빈번하게 발생하고 있다. 이와 관련한 분쟁을 효율적으로 처리하기 위하여 2009년 <선하증권과 상환없는 화물인도사안의 심리에 관한 법률적용에 관한 약간의 문제에 대한 규정>을 공포하였다. 본 논문은 한 ·중 FTA체결로 인해 한중기업간의 국제물품거래가 증가하고 있는 현실에서, 중국 내 실무에서 지속적으로 증가하고 있는 선하증권 상환없는 운송인의 물품인도 행위로 부터 우리나라 기업의 권리보 호와 중국과의 국제거래의 활성화를 도모하기 위하여 최신의 중국법제와 판례를 통해 검토 하고자 한다. Purpose : In shipping practice, delivery of goods without presentation of bill of lading has become a widely accepted usage. Before the introduction of The Supreme People’s Court’s Regulations on Issues Concerning Trial of Cases of Delivery of Goods without the Original Bill of Lading with Applicable Law in 2009, there was no agreement on the legal liabilities of carriers responsible for delivery of goods without the original bill of lading in both theory and practice fields. Rules on delivery of goods without the original bill of lading determines the delivery of goods without the original bill of lading a concurrence of both liabilities for breach of contract and tortious liability. This paper is to review the Legal Regulation for Delivery of Goods without Bill of Lading in China. Research design, data, methodology : This paper uses the literature research and case study as to analyze the delivery of goods without the original B/L. Results : In order to protect a party’rights form the breach of contract of carrier, a party who relies on a breach of contract must understand legal liabilities of carriers responsible for delivery of goods without the original B/L and take such measures reasonable in the circumstances to mitigate the loss form the breach of contract of carrier. Conclusions : This study found that the delivery of goods with presentation of B/L is common fundamental rule In the international trade. therefore, the parties of contracts for international sale of goods by sea should rational measures on the legal liability of carriers.

중ㆍ미 보조금분쟁에서 특정성 기준의 적용

윤성민(Sung-min Yun),김종칠(Jong-chill Kim) 한국국제상학회 2013 國際商學 Vol.28 No.4

Antl-dumping, Countervailing and Safeguard Measures are permitted Trade Remedy Measures under the WTO legal system. Specificity is one of the most important concepts in SCM agreement(Subsidies and Countervailing Measures agreement). It is one of the most important distributions of the US's Countervailing duty law to the WTO's Agreement on Subsidies and Countervailing Duty Measures. According to the rules under 1986 Georgetown steel case, United State shall not initiate any countervailing duty investigations against the products from the non-market economy countries. However, recently The United State initiated the first countervailing duty investigation toward coated free sheet Paper imported from China in November 2006. Up to April 2011, the United States has initiated total of 30 countervailing duty investigation towards China. So this paper examine US-China dispute cases and analysis interpretation of the application of Specificity standards in SCM Agreement.

한·중·FTA의 효율적 이행을 위한 원산지검증에 관한 연구

윤성민(Yun Sung Min) 한국아시아학회 2022 아시아연구 Vol.25 No.4

FTA 협정에 따라 특혜관세 혜택이 부여되므로 원산지에 대한 엄격한 확인이 요구된다. 이런 이유로 원산지 검증을 합법적인 무역재제 수단으로 악용하는 비중도 증가하고 있다. 원산지규정은 FTA 협정마다 상이하며, 자의적인 규정과 복잡한 검증절차를 적용할 경우 합법적인 무역장벽으로써 작용될 수 있기 때문에 무역분쟁의 단초가 될 우려가 있다. 따라서, FTA 협정하에 특혜관세가 얼마나 효율적으로 활용되는지 원산지 관련 규정에 대한 세심한 점검 및 관리가 요구된다. 한·중 FTA 체결 이후 수출입과정에서 FTA 활용도가 높게 나타났다. 반면, 중국은 수출규제 및 감독을 강화하고 있으며 이러한 조치와 함께 원산지검증이 엄격하게 강화될 경우 우리나라 기업에 미칠 영향은 커질 것이다. 이에 본 연구에서는 우리나라 수출기업의 대 중국 수출확대를 위하여 한·중 FTA의 효율적 이행을 위한 시사점을 제시하고자 한다. Since preferential tariff benefits are granted through the FTA agreement, strict verification of the country of origin is required. For this reason, the proportion of misuse of the verification of origin as a legal means of trade sanctions is increasing. The rules of origin are different for each FTA agreement, and if arbitrary rules and complex verification procedures are applied, it can act as a legal barrier to trade, so there is a risk that it may become the beginning of a trade dispute. Therefore, Careful inspection and management of the rules of origin are required to determine how efficiently preferential tariffs are operated and utilized under the FTA agreement. After the conclusion of the Korea-China FTA, the use of FTAs in the import/export process was high. On the other hand, China is strengthening export regulations and supervision, and if the country of origin verification is strictly strengthened with these measures, the impact on Korean companies will increase. Therefore, this study intends to suggest implications for the efficient implementation of the Korea-China FTA in order to expand exports of Korean exporting companies to China.

건설분쟁 유형분류 및 원인분석에 관한 연구

윤성민(Yun Sung Min),채명진(Chae Myung Jin),한승헌(Han Seung Heon),김기태(Kim Gi Tae) 대한토목학회 2004 대한토목학회 학술대회 Vol.2004 No.10

위계적선형모형(HLM)을 적용한 아버지역할 증진을 위한 웹기반 아버지교육프로그램의 효과에 영향을 미치는 개인특성 변인 탐색 : 지속가능성 증진을 위한 증거기반실무를 중심으로

윤성민 ( Sung-min Yoon ) 한국아동가족복지학회(구 한국가족복지학회) 2021 한국가족복지학 Vol.26 No.1

Objective: The purpose of this study is to increase the possibility of sustainable use of an existing web-based fathering program by applying an evidence-based practice to the dissemination and implementation stage of the program. To this end, we apply hierarchical linear models(HLM). Methods: This study investigated the association between initial scores and change rates of three outcome measures (Satisfaction with Life Scale: SWLS, Parent-Child Relationship Satisfaction Scale: PCRSS, and Parenting Sense of Competence: PSOC) and the influence of three individual characteristic variables (education, family income, and marital satisfaction) that affected the individual differences of change rates in outcome measures that were induced by the program participation. Data from 49 South Korean middle-aged fathers participating in this program were analyzed by HLM. Results: For SWLS, participants showing greater life satisfaction improved significantly more rapidly as sessions progressed. For PSOC, participants showing a lower education improved significantly more rapidly across time. For PCRSS, there was no significant results. Conclusion: The study suggests that it may be beneficial to apply individually differentiated arrangement of contents for each session depending on the father's initial level of satisfaction with life and that the program needs to be promoted more actively to the fathers with a lower education.

휘발성 유기화합물 흡착탑 폐활성탄의 탈착반응 및 열량특성 연구

윤성민(Sung Min Yoon),김주연(Joo Yeon Kim),박근익(Kunyik Park),윤수경(Soo Kyung Yoon),길인섭(In Sub Kil),박희재(Hui Jae Park),이영우(Young-woo Rhee) 한국청정기술학회 2010 청정기술 Vol.16 No.1

시화/반월 산단 내 활성탄 흡착탑을 사용하는 대표적인 업체에서 수거한 폐활성탄의 탈착특성 및 열량특성을 조사하였다. 열중량분석기를 이용하여 폐활성탄의 탈착반응특성을 조사하였다. 탈착특성 데이터를 바탕으로 탈착반응특성 비교에 중요한 요소인 반응차수 및 활성화에너지를 구하기 위하여 Freeman-Carroll법을 사용하여 반응차수와 활성화에너지 값을 구하였다. 또한 폐활성탄에 흡착되어 있는 휘발성 유기 화합물의 총탄화수소 배출특성을 이용하여 톨루엔을 기준으로 한 휘발성 유기 화합물의 열량을 계산하였다. 본 연구에서는 반응차수가 0.1~0.8, 활성화에너지가 6.8~26.4 kJ/mol로 나타났으며, 열량은 업체별로 0.4~10.7 kcal/kg으로 나타났다. The characteristics of desorption reaction and the heating values of used activated carbons collected from the companies of Shiwha/Banwal industrial complex were investigated. The desorption characteristics of used activated carbons were analyzed based on the data obtained from a thermogravimetric analyzer. The activation energies and reaction orders for desorption reaction of used activated carbons were calculated by employing Freeman-Carroll method. Heating values of volatile organic compounds(VOC) desorbed from used activated carbons were estimated based on the data obtained from a total hydrocarbon analyzer. It was found that the reaction orders of desorption of used activated carbons were 0.1~0.8, their desorption activation energies, 6.9~26.4 kJ/mol, and VOC heating values, 0.4~10.7 kcal/kg.

BIM 기반 건물 에너지 시뮬레이션 인터페이스 개발을 위한 IFC 정보 변환방법

윤성민(Yoon, Sung-Min),우세진(Woo, Sae-Jin),최진원(Choi, Jin-Won),김재홍(Kim, Jae-Hong) 한국태양에너지학회 2013 한국태양에너지학회 학술대회논문집 Vol.2013 No.4

Since global warming and environmental pollution issues arose worldwide, technologies and policies related with low-energy building have been developed in the field of architecture. Green BIM based technology is a way to achieve the sustainable building in the design stage. Accordingly, this paper proposes a method of converting IFC Data for development of BIM based building energy simulation interface. The interface is able to convert IFC file to EnergyPlus input file in terms of geometry information and attribute of building elements through the suggested conversion method in this study.