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김종수,조강래,Kim, J.S.,Cho, K.R. 대한설비공학회 1995 설비공학 논문집 Vol.7 No.2
The effects of duct inlet conditions on fan characteristics and upper wind velocity fields were investigated for two kinds of impellers. As the duct inlet condition, the relative positions between duct inlet and fan impeller and the size of baffle plate mounted on a duct inlet were selected. The 3-dimensional velocity components in flow fields were measured by a 5-holes pitot tube. From the results of measurements, it was found that the size of baffle plate scarecely effect on upper wind flow fields and characteristics of fan. It was also confirmed that the upper wind velocity distributions can be estimated by the potential flow field with large baffle plate at duct inlet.
김종수,강정길,Kim, J.S.,Kang, J.K. 대한설비공학회 1991 설비공학 논문집 Vol.3 No.4
Recently, automotive air conditioning system manufacturers have been made a great efforts on the system compactness and high efficiency. This growing interest comes improvements in evaporator thermal performance, one of the most important factors affecting the performance of air conditioning system. In order to improve design of compact type evaporator, this study executes performs to develop a computer program for evaporator thermal performance prediction of automotive air conditioning system. The brief summaries of this study are as follows: 1) To predict the overall thermal performance of serpentine type evaporator, the new simulating method is developed. 2) The calculations are performed as functions of oil mass concentration and refrigerant two-phase distribution at inlet manifold of evaporator. 3) The validity of this simulating program is confirmed by comparing the predicted thermal performance results to experimental results of practical available evaporator. 4) Based on these results, suggestions are made to improve the thermal performance of evaporator.
김종수(J. S. Kim),김광수(K. S. Kim),고창성(C. S. Go),손시호(S. H. Son),조한수(H. S. Cho) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.7
본 논문은 초고압 지중송전선로에 사용되는 500㎸ XLPE 케이블 및 접속함 개발에 대해 기술하였다. 500㎸ 케이블은 XLPE 절연두께를 30㎜로 설계하였고, 직선 접속함, 기중 종단 접속함 그리고 가스중 종단 접속함을 500㎸ 시스템에 맞게 전기적, 기계적 성능을 고려하여 설계하였다. 모든 접속함은 접속시공을 하는데 간편하도록 설계하여 공장에서의 routine test, special test을 수행후 실운전시 위험 요소를 제거 하도록 설계하였다. 케이블 시스템의 유효성 검정을 위한 IEC 표준에 따른 형식시험(Type Test)를 성공적으로 완료하여 개발된 500㎸ 케이블 시스템 전체의 신뢰성을 확인할 수 있었다.
고속궤도차량의 로드휠과 궤도의 접촉 강성 및 감쇠계수에 대한 실험적연구
김종수(J.S.Kim),방동창(D.C.Park),김재용(J.Y.Kim),최진환(J.H.Choi) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.11_2
An experimental study is presented for the contact property of the interactions between road wheel and track link in order to identify the dynamic characteristics of the tracked vehicle along the vertical direction and the loading conditions. The revolving rubber molded track link and road wheels are subjected to the reaction forces from the ground, the traction forces from the engine which lead to the tension, compression, and torsional load as the operational conditions and environment. The dynamic effect of the contact stiffness and damping coefficients between road wheel and track link is illustrated by using experimental methods which can be used to the dynamic simulation of the multibody tracked vehicle.
진동형 히트파이프와 열전소자를 이용한 차량용 냉 온장고에ㆍ관한 실험적 연구
김종수(J.S. Kim),전동환(D.H. Jeon),임용빈(Y.B. Im),장경희(K.H. Jang),이석준(S.J. Lee),김상현(S.H. Kim) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.5
The purpose of this study is to develop a cooling or heating cabinet for a vehicles using a thermoelectric element combined with a pulsating heat pipe. The pulsating heat pipe used as a heat spreader and heat sink for a TEM. Heat was absorbed and dissipated by combined heat sinks equipped with fans. The experiment was performed for 6 thermoelectric module (6 A/15 V, size: 40×40×4 ㎜), varying design parameters of the heat pipe (inclination angle, working fluid charging ratio, etc.).