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산업단지 발생 액상폐기물(폐유와 폐유기용제)의 고온연소 특성
김민철(Kim, Min-Choul),이재정(Lee, Jae-Jeong),석민광(Suk, Min-Kwang),이강우(Lee Gang-Woo),손병현(Shon Byung-Hyun) 한국산학기술학회 2009 한국산학기술학회논문지 Vol.10 No.12
산업단지에서 발생하는 액상폐기물(폐유와 폐유기용제)을 고온반응기에서(온도 1,250~1,400℃, 압력 1기압) 연소시키면서 연소 특성, 유해물질 분해정도 및 연소 후 배출가스 특성 등을 살펴보았다. 산소와 폐기물의 질량비 (O₂/waste mass fraction)가 1.53 이하로 줄어들 때 반응기는 산화분위기에서 환원분위기로 전환되었고 연소 후 배출가 스는 NOx 배출량이 감소하고 합성가스의 발생비율이 증가하였으며 BTEX류는 99.99%이상 분해되는 것으로 나타났 다. 본 연구에서 제안한 시스템 및 조업조건 하에서 고농도의 액상폐기물(폐유와 폐유기용제)을 처리한 결과 미량 오 염물질의 배출농도는 매우 낮은 값을 보여 액상폐기물의 처리에 적합한 것으로 판단되며 또한 연소 후 합성가스도 연료로 활용할 수 있을 것으로 사료된다. This study was investigated to determine the combustion characteristics, decomposition efficiency, and the flue gas concentrations after combustion in the high temperature reactor(1,250~1,400℃, 1 atm) for the liquid wastes(waste oil and waste solvent) generated from the industrial complex. The concentration of nitrogen oxide(NOx) is decreased and the synthetic gas is increased when the mass ratio of O₂/waste is about 1.53 because the reaction condition was changed to reduction state. And BTEXs(benzene, toluene, ethylbenzene, xylene) are decomposed more than 99.99%. If the highly concentrated liquid waste (waste oil and waste solvent) is treated under the operating conditions suggested by this study, our treatment method for the liquid waste was found to be proper because of the contaminants emission concentration is very low. In addition, the synthetic gas after combustion can be used as an alternative fuel.
김백준(Kim, Baek-Jun),이유정(Lee, Yu Jeong),석민철(Suk, Min-Chul),이권형(Lee, Kweon-Hyoung) 대한건축학회 2023 대한건축학회 학술발표대회 논문집 Vol.43 No.2
The space of public libraries has been changed in the direction of supporting user satisfaction and various activities, focusing on the role of data preservation and education. However, unlike before, the use of space is not suitable to accommodate various needs, such as the disappearance or reduction of existing space to provide services and programs. In particular, a method of calculating the size according to the number of people within a certain range or calculating the size by referring to the average size of other nearby libraries was proposed. In this study, factors influencing the number of users were derived through the analysis of previous studies. The factors derived from previous studies are limited to the physical factors necessary to calculate the size at the pre-planning stage, so the influencing factors were supplemented and added to four categories: education, culture, commerce, and transportation facilities. As of 2019, statistical data from 33 public libraries in Busan were analyzed to collect data within 0-1km walking distance, and hierarchies were classified according to the number of visitors by region to derive influencing factors that affect visitors regardless of size. The analysis method was conducted in two ways through impact analysis and regression analysis according to the visitors award/middle/lower hierarchy. As a result of the study, factors influencing high school libraries such as the number of high school students, parks, and movie theaters were derived. Through the results of these studies, it is expected that a hypothesis can be established based on the physical factors of the Busan Library and used to establish a calculation formula for calculating the size of the public library in the future.
회전류 생성 난류 발생기를 적용한 진공관형 태양열 매니폴드의 성능 특성 연구
서석민(Suk Min Seo),노세현(Se Hyeon Noh),이민성(Min Sung Lee),박찬우(Chan Woo Park) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.11
The purpose of this study is increasing the efficiency of the solar collectors heat transfer rate. By inserting the turbulence generator into manifold in the solar collector, compare the heat transfer rate of with or without the turbulence generator and analyze. The main idea is increasing heat transfer rate without changing any other variable, except pressure difference by inserting the turbulence generator.
자동차 가죽시트의 내구오염 메커니즘 규명 및 평가법 개발
최석민(Suk-Min Choi),구현진(Hyun-Jin Koo),장갑식(Gap-Shik Chang),정원욱(Won-Wook Jung),민병훈(Byung-Hoon Min),이태희(Tae-Hee Lee) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
We have proposed a newly designed test and assessment method for simulating the stains of automotive leather seat through analyzing the stain accumulation mechanism in the field. The major causes of leather seat stains were found to be the combination of stain accumulation from outside and photo degradation and shrinkage due to high temperature and sun light inside of the car. In addition, the objective assessment methods of color difference after stain resistance test was proposed comparing with subjective assessment method using grey scale. Using the newly designed test and assessment method, the field stain behavior can be simulated within a short test time and also evaluate the color difference more accurately.
전자체중계를 이용한 환측 체중부하훈련이 편마비 환자의 제중지지율과 보행에 미치는 효과
이석민,심태호,Lee, Suk-Min,Shim, Tae-Ho 대한물리치료과학회 2003 대한물리치료과학회지 Vol.10 No.1
The purpose of this study was to investigate the effect of the involved lower limb weight bearing training on symmetrical weight supporting rate improvement and gait characteristics of patients with hemiplegia including their gait velocity, cadence, stride length, step length of the non affected side, step length of the affected side, foot angle of the non affected side, foot angle of the affected side, base of support, and so on. The subject of the study was 28 men and women patients with hemiplegia from 22 to 77 age, among patients who doctor diagnosed as hemiplegia due to stroke or traumatic brain injury, were possible to do independent gait more than 45m without others assistance, the flexion contracture of hip pint was less than $15^{\circ}$, did not have contracture for knee pint and one more than $5^{\circ}$ for ankle joint, did not have contraindication for exercise or gait did not show visual defect due to brain injury. The patients, the subject of the study, were classified into 14 patients of treatment. group applying continuous involved weight bearing with general therapeutic exercise and 14 patients of control group applying general therapeutic exercise, and then analyzed their gait before and after exercise. Temporal distance gait analysis(Boening, 1977) was used to analyze their gait, and ink foot-print was applied as one of measurement methods. However, it was statistically signifiant in the change rate(%) of gait characteristics, and treatment group's patients with hemiplegia had been highly changed in gait characteristics in comparison with control group. From the above-mentioned results, could find that continuous involved weight bearing training for patients with hemiplegia was effective to improve their gait ability and it could increase the ability in comparison with general exercise.