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CaO를 이용한 보일러 배가스의 반건식 중온 FGD에 관한 연구
류정인(J. I. Ryu),송완중(W. J. Song),이재성(J. S. Lee),이병오(B. O. Lee) 대한기계학회 2001 대한기계학회 춘추학술대회 Vol.2001 No.9
By the sudden increase of using a boiler, environmental problem is now becoming a international issue and so our government intensify the environmental rules. Now, we must prepare the change of international circumstance and develop a emission control technique for improvement of our atmosphere quality. in this study, we make a 800ppm SO₂ gas which is exusted by real boiler, and execute a series of FGD tests. As a result of this study it is concluded that an optimum desulfurization ratio depend on such as humidity, temperaure and flow quantity.
메틸알코올을 혼합한 가솔린 엔진용 연료의 배기가스제어에 관한 연구 (Ⅰ)
류정인(Jeong In Ryu),이성노(Seong No Lee) 대한공업교육학회 1979 대한공업교육학회지 Vol.4 No.1
In these days of endeavoring to reduce oil consumption and to control automobile exhaust emission gases in the air pollutions to be troubled in the whole world, because of the international oil shock and future oil exhaustion covering two times of 1974 and 1979, this study is obtained to conclusion to reduce hydrocarbon and carbon monoxide density from mixing methyl alcohol with gasoline and preheating and pressurizing intake air. The results were as follows: 1) It decreased carbon monoxide density with mixing methyl alcohol with gasoline. 2) It decreased hydrocarbon density with mixing methyl alchol with gasoline below 10%. 3) It decreased considerably carbon monoxide and hydro carbon density with preheating and pressurizing intake air.
열수액화를 이용한 미세조류 추출잔사로부터 바이오원유 제조에 대한 반응인자의 영향
류영진(Young-Jin Ryu),신희용(Hee-Yong Shin),양지현(Ji-Hyun Yang),이윤우(Yunwoo Lee),정인재(Injae Jeong),박한울(Hanwool Park),이철균(Choul-Gyun Lee) 한국해양바이오학회 2017 한국해양바이오학회지 Vol.9 No.2
Hydrothermal liquefaction of lipid-extracted Tetraselmis sp. feedstock containing 80 wt.% water was conducted in a batch reactor at different temperatures (300, 325, and 350oC) and reaction times (5, 10, 20, 40, and 60 min). The biocrude yield, elemental composition and higher heating value obtained at various reaction conditions were used to predict the optimum conditions for maximizing energy recovery of biocrude with good quality. A maximum energy recovery of 67.6% was obtained at 325°C and 40 min with a high energy density of 31.8 MJ/kg and lower contents of nitrogen and oxygen. Results showed that reaction conditions of 325°C, 40 min was most suitable for maximizing energy recovery while at the same time achieving improved quality of biocrude.
류향진 ( Hyang Jin Ryu ),유승흠 ( Seung Hum Yu ),박은철 ( Eun Cheol Park ),김정인 ( Jung In Kim ),손태용 ( Tae Yong Sohn ) 한국병원경영학회 2006 병원경영학회지 Vol.11 No.3
This study aims to deal with hospital staff`s recognition on the opening of the medical services market, their attitude to the opening-agreement and disagreement, and their intention to use a foreign hospital or to consult its doctors again. It was conducted for 450 employees of one university hospital located in Gyeonggi Province, Korea with systemized questionnaires. The main results of this study are as follows: First, Medical technicians showed the highest level recognition on the opening of the medical services market. Second, the percentage of agreement to the opening was the highest for medical technicians and lowest for doctors while that of agreement was the highest for doctors and lowest for nurses. For residents, among doctors, the percentage of disagreement was the lower than that of agreement. Third, the intention to use a foreign hospital and to consult its doctor again was the lowest for medical engineers and the highest for doctors. Fourth, the most urgent task for local hospitals to accomplish in response to the opening was the improvement of the diagnosis and treatment technologies for nurses, and the improvement of the service provided by the hospital staff for the others. For doctors, in particular, the improvement of the diagnosis and treatment technologies was just the fourth urgent task. In conclusion, the result varies to the type of occupation. Apparent difference was found for doctors, in particular, that seem to be directly affected by the opening of medical services market. Local hospitals and doctors, therefore, should make efforts together to improve the diagnosis and treatment technologies. All the hospital employees of every type of occupation, meanwhile, need to prepare for the opening with medical service of improved quality.
류문현 ( Mun Hyun Ryu ),조승국 ( Seung Kuk Cho ),김정인 ( Jeong In Kim ) 한국환경정책학회 2012 環境政策 Vol.20 No.1
Economic damages of Natural disaster are increasing recently. Natural disaster reduces national economic growth or changes the structure of national economy. This study employs a Computable General Equilibrium (CGE) model to examine the effect of natural disaster on national economy. To estimate national economic damages of natural disaster provides information such as community vulnerability, worthiness of mitigation projects, appropriate level of disaster assistance, and recovery decisions. The result implies that natural disaster has an impact of reducing 5% of GDP in Korea on the assumption of no rehabilitation actions.