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황-요오드의 열화학적 물분리에 의한 수소제조연구 Part I . 물-이산화황-요오드 반응 및 분리
이강일(K . I . Lee),민병태(B . T . Min),권선길(S . G . Kwon),강영호(Y . H . Kang) 한국수소및신에너지학회 1989 한국수소 및 신에너지학회논문집 Vol.1 No.1
The sulfur-iodine thermochemical water splitting process of GA(General atomic) cycle was studied to produce hydrogen from water by H₂-I₂-SO₂ reactions. The experimental scale was 500g based on iodine. The reaction took 100 minutes, products could be separated two liquid phases due to their density difference:HI solution had a density of 2.39-2.61g/cc, and H₂SO₄ solution had 1.37-1.38g/cc. The condition of reaction was when weight ratio of I₂/H₂O was 2/1 resulting in good phase separation and productivity.
전산유체역학을 활용한 자주도하장비 문교 상태의 저항 및 자항 성능 평가
이인수(I. Lee),서정화(J. Seo),석우찬(W. Seok),유재훈(J. Yoo),이강일(K.I. Lee),김도헌(D.H. Kim),이남훈(N. Lee),이성오(S.O. Lee),이신형(S.H. Lee) 한국전산유체공학회 2020 한국전산유체공학회지 Vol.25 No.4
In this study, numerical simulations were conducted for resistance and self-propulsion performance for an amphibious rig in ferry mode. They were performed under conditions of h/T=4.5, 2.0 and head angles of both 180 and 90 degrees using SNUFOAM, based on open source CFD toolkit OpenFOAM. A double body method was adopted for free surface flow. Thrust was modeled with a body force method in self propulsion tests. The results of resistance tests showed drag forces according to the depth and head angle conditions and presented differences in the drag forces. In order to investigate the differences, the pressure, velocity, and vorticity distribution near the amphibious rig were identified. From self propulsion tests results, the thrusts and powers at the self propulsion point were estimated and compared with the thrust diagram to confirm the self propulsion performance.
기관식도루·우심증·우측폐형성부전을 동반한 식도폐쇄증 1례
한창규,이강일,김춘동,배선익 순천향대학교 1988 논문집 Vol.11 No.1
Esophageal atresia associated with tracheoesophageal fistula is a congenital anomaly of primitive foregut development, which induces the respiratory distress in the early newborn period. There are many reports about development on treatment of this abnormality in foreign countries, but in this country its survival rate is very low until now. Authers have experienced a case of the esophageal atresia which is associated with dextrocardia. right pulmonary aplasia and tracheoesphageal fistula. We present the case and review the related literatures briefly.
강영호,장인순,박현수,이강일,김춘영 한국화학공학회 1990 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.28 No.3
담체로 아민을 함유한 격막형 액막을 사용하여 침출모액의 산도, 담체의 농도, 우라늄이온의 농도의 우라늄 전달속도에 미치는 영향을 고찰하였다. 이온의 전달은 주로 액막내의 확산속도에 영향을 받는다고 가정하여 이론식을 전개하였다. 우라늄이온의 아민에 대한 추출계수를 이용하여 구한 이론식은 실험치와 잘 일치하였으면, 우라늄이온의 최대 전달속도는 pH1.3, 담체농도 30%에서 나타났다. The effects of acidity, solute and carrier concentration on the mass transfer rate were investigated in a supported liquid membrane system where uranium and amine were used as the solute and carrier, respectively. The theoretical uranium permeation rate was developed assuming that the rate determining step was to depend dominently upon the diffusivity of uranium complexes within the membrane. The maximum value of the uranium flux was obtained at pH 1.3 and 30 volume percent of amine.
김상돈,강용,나종복,민병철,이강일 한국화학공학회 1990 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.28 No.2
액체 유동층(0.152m-내경×2.5m-높이)에서 정상상태에 도달하는 압력변화 과정과 유동입자의 분산 및 입자의 빈도수 등의 유동입자의 동특성을 relaxation 방법에 의하여 해석하였다. 유동입자의 크기 (1.0-6.0 ㎜), 액상유속 (30-140㎜/s)이 유동입자의 분산계수 및 입자의 빈도수에 미치는 영향을 결정하였다. 유동입자의 분산과 빈도수는 액체유속과 층 공극률의 증가에 따라 최대값을 나타내며 이 최대값을 나타내는 층 공극률은 유동입자 흐름형태가 변환되는 층 공극률과 거의 일치하였다. The dispersion and frequency of fluidizing particles and the histogram of pressure fluctuations have been analyzed in a liquid fluidized bed. The effects of particle size (1.0-6.0 ㎜) and liquid velocity (3-14 ㎝/s) on the dispersion coefficient and frequency of fluidizing particles have been determined in a 0.152 m-1D×2.5 m high Plexiglas column. The dispersion coefficient and frequency of fluidizing particles exhibit their maximum values with an increase in liquid velocity and consequent increase in bed porosity. The maximum particle dispersion coefficient exhibits at the bed porosity where the flow transition of particles occurs in the bed.