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최순호(S.H.Choi),김경근(K.K.Kim),윤석훈(S.H.Yun),윤두호(D.H.Yun),오병주(B.J.Oh),최순열(S.Y.Choi) 한국해양대학교 해사산업연구소 1998 海事産業硏究所論文集 Vol.7 No.-
The design requirements of reactor coolant pump is very important factor for the safe operation and cooling of Pressurized Water Reactor. This study is concerned with the design requirements of reactor coolant pump based on the Young Gwang Nuclear Power Plant Unit 3 & 4. We concluded that the PWR system designers shall have an accurate information on the RCP design requirements such as kinetic energy of pump rotating parts, rated flow and head, minimum allowable slope of H-Q curve and minimum correctable head through this study. This study provide the system designer with a guideline and a basic background on the RCP design requirements.
Turbulenter를 장착한 디젤기관의 연소 및 배기특성에 관한 실험적 연구
임재근(J. K. Kim),최순열(S. Y. Choi) 군산대학교 수산과학연구소 1999 水産科學硏究 Vol.- No.15
The effects of turbulenter on the characteristics of combustion, exhaust emissions and SFC is experimentally investigated by four-cylinder, four-cycle and direct injection diesel engine operating at several loads and speeds. The investigated results as follows. The combustion pressure in cylinder is slightly increased and ignition timing is not effected by turbulenter. The rate of heat release and accumulated quantity of heat release is slightly increased. SFC is decreased 0.15% of title average, and NOx emission is decreased by maximum value of average 9.84% at 1200 rpm, and title average of decreasing tate is 8.03% in the range of experimental conditions. But Soot emission is increased by maximum value of average 9.52% at 1600 rpm, and title average of increasing rate is 3.45%.
임재근(J.K.Lim),최순열(S.Y.Choi) 군산대학교 수산과학연구소 2000 水産科學硏究 Vol.- No.16
A study on the combustion and exhaust emissions (Soot & NOx) of diesel engine with various fuel injection timing is performed experimentally.In this Paper, fuel injection timing is changed from BTDC 20°to 14°at 2°intervals, theexperiments are performed at engine speed 1800rpm and from load 25% to 100% at 25%intervals, and main measured parameters are cylinder pressure, rate of pressure rise, fuelconsumption rate, Soot and NOx emissions etc. The obtained conclusions are as follows (I) Cylinder maximum pressure is increased with leading fuel injection timing. (2) Specific fuel consumption is indicated the least value at BTDC 18°of foel injection timing. (3) Soot emission is decreased with leading fuel injection timine.(4) NOx emission is increased with leading fuel injection timing.
임재근(J. K. Lim),최순열(S. Y. Choi) 군산대학교 수산과학연구소 2004 군산대학교 수산과학연구소 연구논문집 Vol.4 No.-
A study on the combustion and exhaust emissions (Soot & NOx) of diesel engine with various fuel injection timing is performed experimentally. In this paper, fuel injection timing is changed from BTDC 20˚ to 14˚ at 2˚ intervals, the experiments are performed at engine speed 1800rpm and from load 25% to 100% at 25% intervals. and main measured parameters are cylinder pressure, rate of pressure rise, fuel consumption rate, Soot and NOx emissions etc. The obtained conclusions are as follows (1) Cylinder maximum pressure is increased with leading fuel injection timing. (2) Specific fuel consumption is indicated the least value at BTDC 18˚ of fuel injection timing. (3) Sact emission is decreased with leading fuel injection timing. (4) NOx emission is increased with leading fuel injection timing.
Turbulenter를 장착한 디젤기관의 연소 및 배기특성에 관한 실험적 연구
임재근(J. K. Lim),최순열(S. Y. Choi) 군산대학교 수산과학연구소 2004 군산대학교 수산과학연구소 연구논문집 Vol.4 No.-
The effects of turbulenter on the characteristics of combustion, exhaust emissions and SFC is experimentally investigated by four-cylinder, four-cycle and direct injection diesel engine operating at several loads and speeds. The investigated results as follows. The combustion pressure in cylinder is slightly increased and ignition timing is not effected by turbulenter. The rate of heat release and accumulated quantity of heat release is slightly increased. SFC is decreased 0.15% of totle average, and NOx emission is decreased by maximum value of average 9.84% at 1200 rpm, and totle average of decreasing rate is 8.03% in the range of experimental conditions. But Soot emission is increased by maximum value of average 9.52% at 1600 rpm, and tot1e average of increasing rate is 3.45%.
선박용 디젤기관의 연료분사 시기가 배기배출물 특성에 미치는 영향
임재근(J-K Lim),최순열(S-Y Choi) 군산대학교 수산과학연구소 2004 군산대학교 수산과학연구소 연구논문집 Vol.5 No.-
A study on the exhaust emissions of marine diesel engine with various fuel injection timing is performed experimentally.In this paper, fuel injection timing is changed from BTDC 14° to 20° by 2°intervals, the experiments are performed at engine speed 1800rpm and from load 0% to 100% by 25% intervals, and main measured parameters are fuel consumption rate, Soot, NOx, HC and CO emissions etc. The obtained conclusions are as follows (1) Specific fuel consumption is indicated the least value at BTDC 18° of fuel injection timing and it is increased in case of leading the injection timing. (2). Soot emission is decreased in case of leading fuel injection timing and it is increased in the form of convex downwards with increasing the load. (3) NOx emission is increased in case of leading fuel injection timing and it is increased in the form of straight line nearly with increasing the load. (4) HC and CO emissions are decreased in case of leading fuel injection timing and they are changed in the form of convex downwards with increasing the load.