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RISS 인기검색어
- 검색키워드
- 저자 : 박윤철(Y.C.Park) (검색결과 22 건)
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박윤철(Y. C. Park),권기린(K. R. Kwon) 한국동력기계공학회 2002 동력시스템공학회지 Vol.6 No.4
This study was conducted to find performance evaluation method for automobile air conditioner. Experimental facilities were constructed to simulate wide range of operating condition for the automobile air conditioner. Compressor speed was controled by variable speed electric motor and the power was measured through torque transducer and tachometer was used to measure compressor speed. Parametric studies were conducted in this study, to figure out effect of environment variables on the performance of the automobile air conditioner. The environmental variables are inlet air temperature, relative humidity and air flow rate for the evaporator and inlet air temperature and air flow rate for the condenser. Compressor speed is also changed. The results of this study shows that air flow rate of the evaporator is more sensitive to the performance of the automobile air conditioner than the other variables. However relative humidity of the inlet air of the evaporator strongly affects capacity rather that COP.
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태양열 및 보일러이용 온수난방 시스템에 관한 실험적 연구
박윤철(Y. C. Park ),김현석(H. S. Kim ),류남진(N. J. Ryu ) 한국동력기계공학회 2009 한국동력기계공학회 학술대회 논문집 Vol.2009 No.6
The solar energy is limitless and pollution-free natural energy; however, the solar energy has not been utilized extensively due to its low density and restriction of availability. This study was conducted to analyze operating characteristic of a solar assisted heating system for hot water supply and panel heating of a house. The main part of the system is a thermal storage tank which was designed to store energy that obtained from solar collectors and a burner. The heat exchanger is located on bottom of the storage tank which supplies solar energy to the water in the storage tank and is connected directly to the solar collector. As an additional heat source, a burner was inserted to the top of the storage tank and supplies energy to water in the storage tank through indirect contact of the fire frame and stack flue. And also a small tank for hot water heating was attached at inside of the thermal storage tank. The water in the tank is heated by the water in the thermal storage tank. As results, if design temperature of the boiler is increased, the efficiency of system is decreased. When the system uses hot water, system performance is decreased as increasing of the warm water usage. The developed system can be used as main heating equipment to the residential with the panel heating.
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태양열을 이용한 온수 및 난방 일체형 복합시스템의 성능예측에 관한 연구
한유리(Y. Han),류남진(N. J. Ruy),박윤철(Y. C. Park) 한국동력기계공학회 2008 한국동력기계공학회 학술대회 논문집 Vol.2008 No.11
In this study, a simulation program was developed with heat transfer model in the storage tank and analysis was conducted with variation of operating condition and schedule of operation to analyze performance of a hot water supply and panel heating system with a solar collector and burner combined thermal storage tank. The simulation program is divided two sections. One part is calculation of temperature variation of water which flows through the panel in the floor for heating of the residential house during 24 hours, and the other part is heat transfer calculation for the reaction time to get desired water temperature in the thermal storage tank. As results, light oil consumption and system performance during operation period were analyzed with variation of climate condition and with or without solar collector. Most of the case, oil could be saved about from 24 to 41% with installing the solar collector. The performance of the system is more dependent on radiation time of the solar collector rather than the intensity of the solar radiation.
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배영문(Y. M. Bay),심윤희(Y. Shim),박윤철(Y. C. Park) 한국동력기계공학회 2004 동력시스템공학회지 Vol.8 No.3
An analysis was conducted to predict technical trends for the highly efficient absorption refrigeration system. The study was based on submitted patent during January 1981 and December 2000 in Korea, Japan and U.S.A. The analysis are divided with two categories as component technology and refrigeration type technology. The analysis was focused on component technologies rather than the absorption cycle or system technologies.
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제주지역 환경시설지구의 미활용 에너지 최적 활용방안에 관한 연구
강병찬(B. C. Kang),박윤철(Y. C. Park) 한국동력기계공학회 2007 동력시스템공학회지 Vol.11 No.3
This paper provides a methodology for the optimization of waste heat usage in Jeju Province. The incineration plant was considered as heat source and the food garbage plant and the youth hostel were selected as heat sink of this study. The distribution of the reusing energy in incineration plant is decide by load analysis and numerical calculation of the operational methodology. The main objective of this study is on the reduction of the fuel costs and reuse of waste heat. As the results, the efficiency of the incineration plant and two heat sink, the food garbage plant and the youth hostel, are improved and economical suggestions are proposed through the optimization analysis.
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