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열환경챔버의 냉방 시뮬레이션 프로그램 개발에 관한 연구
한도영(Do-young Han),이한홍(Han-Hong Lee),류규현(Kyu-Hyun Ryu) 한국공작기계학회 1999 한국공작기계학회지 Vol.8 No.5
The thermal environmental chamber has been using in maintaining weather condition, keeping thermal capacity under heating and cooling load fluctuation and for the performance testing of cooling system or air-conditioner on artificial environment. In order to make the various environmental conditions in the thermal environmental chamber, the proper cooling system is necessary to eliminate the heating load produced inside the chamber and to maintain the designed environmental condition. For this reason, the optimal design of cooling system and the prediction of performance is also required. This paper describes the prediction of performance of cooling system in the thermal environmental chamber with the capacity of 37,000㎉/hr which is developed for the test of performance in heating mode of heat pump system. In the result, this paper is trying to develop simulation program on the base of mathematical models and which can be applied effectively to the optimal design of cooling system and prediction of performance to the inside and outside change of environmental load.
디젤기관에서 전기 히터 재생 여과 트랩의 특성에 관한 연구
류규현,박만재 한국공작기계학회 2001 한국생산제조학회지 Vol.10 No.1
Urgent increasing of the vehicles influence air pollution and the damage of the plants and animals. Particularly, exhausting particulate of diesel vehicles give serious effect to human life. Therefore, this study aim to reduce amount of particulate and to contribute developing after-treatment in diesel engine. Through the experimental and theoretical study about characteristics of the electric heat regeneration, various results are obtained.
터보 차져와 인터쿨러를 장착한 디젤기관의 시뮬레이션 연구
한영출,백두성,류규현,오용석,박만재 韓國工作機械學會 2000 한국생산제조학회지 Vol.9 No.4
Studies on the turbocharger itself or various aspects generated from turbocharged engine have been made. However, only a few researches have been made on the performance for the natural aspirated engine equipped with the turbocharger and the intercooler. In this study, the performance prediction program based on turbocharger theory is developed for simu-lation which may reduce the cost and the trial-and-error time. The program is verified with the experimental results for 11,000cc diesel engine with the turbocharger and the intercooler. Also, various factors which are invisible in experiment are predicted using this program.
DOC의 K-7 Mode에 의한 배기가스 저감에 관한 연구
한영출,백두성,오용석,박만재,박귀열,류규현 韓國工作機械學會 2000 한국생산제조학회지 Vol.9 No.3
With the significant growth of the number of vehicles, environmental problems is raised. NOx, SOx, and PM emissions in diesel powered vehicles are larger than that in gasoline, because the development of pollutants reduction techniques has no: been yet achieved. So it is need to develop after-treatment or to convert into alternative fuel to satisfy emission regula-tion. Among the after-treatment systems to reduce the diesel emissions, studies with diesel oxidation catalyst(DOC) are done greatly. In this study using DOC, reduction efficiency with the change of temperature and catalyst loading was calculated through measurements of CO, HC, PM, and SOx.