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정지현(Jihyun Jung),황인철(Inchul Hwang),보하라(Padam Bahadur Bohara) 한국자동차공학회 2016 한국자동차공학회 학술대회 및 전시회 Vol.2016 No.11
A demand for the car security technologies is increasing as vehicle prices and exports of car are ascending. Especially Microbus need appropriate security technologies to cover their large interior volume. In this paper we introduce a security system which is redesigned to be suitable to Microbus based on the intrusion detection system of Sedans. The security system is composed of two ultrasonic sensor modules which have two TX sensor and one RX sensor. Dark current ascent and ultrasonic sensor transmission collision problems due to implantation to Microbus have been solved by sequence control between modules. This intrusion detection system for Microbus has verified by vehicle test using shuttle bus, and we confirmed that it has the equivalent performance with intrusion detection system of Sedans and the detect extent covers all the passenger seats in the Microbus.
연료전지 자동차용 이산화탄소 열펌프 시스템에서의 냉방 성능에 관한 실험적 연구
김성철(Kim, Sungchul),박민수(Park, Minsoo),김민수(Kim, Min Soo),황인철(Hwang, Inchul),노영우(Noh, Youngwoo),박문수(Park, Moonsoo) 한국신재생에너지학회 2005 한국신재생에너지학회 학술대회논문집 Vol.2005 No.06
This experimental study presents the results of the cooling performance test of a CO₂ heat pump system for fuel cell vehicles. The experimental facility provides the cool ing and heating environment for cabin and heat releasing component. The test loop is designed to target the cooling capacity of 5kW and its coefficient of performance (COP) of 2.2. The cooling performance of the heat pump system is strongly dependent on the refrigerant charge and the degree of superheat. We carried out basic experiments to obtain optimum refrigerant charge and the degree of superheat level at the internal heat exchanger outlet. The heat pump system for fuel cell vehicles is different from that of engine-driven vehicles, where the former has an electricity-driven compressor and the latter has the belt-driven (engine-driven) compressor. In the fuel cell vehicle, the compressor speed is an independent operating parameter and it is controlled to meet the cooling/heating loads. Experiments were carried out at cooling mode with respect to the compressor speed and the incoming outdoor air speed. The results obtained in this study can provide the fundamental cool ing performance data using the CO₂ heat pump system for fuel cell vehicles.
김재춘(Jae Choon Kim),이용택(Yongtaek Lee),정진택(Jin Taek Chung),김용찬(Yongchan Kim),황인철(Inchul Hwang) 한국유체기계학회 2005 유체기계 연구개발 발표회 논문집 Vol.- No.-
In this paper, numerical analysis of hydrogen recycle system has been conducted in order to enhance the efficiency of automotive fuel cell. Generally, the excess hydrogen is provided in the automotive fuel cell. Since the non-reaction hydrogen reduces automotive fuel cell efficiency, reuse of the non-reaction hydrogen can be helpful to improve the fuel cell performance. In case of PEM FC, the water vapor is provided to hydrogen from the cathode so that the mixture experiences phase change depending on the changes of pressure and temperature. The internal flow of the mixture in the hydrogen recirculation system of fuel cell was investigated for real flow conditions. The variation of performance, properties and mass fractions of mixture, hydrogen and water-vapor were investigated. This study was performed based on 80KW level automotive fuel cell's recycling system.
권혁률(Kwon, Hyuckroul),박형근(Park, Hyungkeun),김성균(Kim, Seongkyun),김치명(Kim, Chimyung),박용선(Park, Yongsun),황인철(Hwang, Inchul) 한국신재생에너지학회 2005 한국신재생에너지학회 학술대회논문집 Vol.2005 No.06
본 개발의 목적은 연료전지차량에 탑재되는 연료전지 시스템에 장착될 공기공급기를 개발하는 것이었다. 개발된 공기공급기의 형태는 공급해야 할 공기의 유량과 압력 범위, 소음 및 향후 양산성 등을 고려하여 원심형 블로어를 선택하였으며, 차량 부하에 따른 공기공급량을 제어하기 위한 제어기도 적용되었다. 또한 차량에 적용될 경우, 예상되는 가혹한 사용환경에서 안정적인 성능을 발휘하고, 내구성을 할 수 있도록 설계되었으며, 특히, 외기온도 45?C에서도 충분한 방열성능을 갖도록 모터 및 모터 방열구조를 설계하였다. 이를 위하여 공급되는 공기로 직접 모터를 냉각하는 개념을 적용하였다. 개발된 터보블로어의 응답성을 포함한 성능평가를 수행하였으며, 설계점에서 600시간 연속운전을 통하여 기본 내구평가를 완료하였다.
황인철 고신대학교 보건과학연구소 2002 보건과학연구소보 Vol.12 No.-
This study was carried out to investigate the biological and chemical levels of water quality on various drinking waters that Busan citizen use. The results were as follows: The mean dissolved oxygen and general bacteria cell number were 8.42mg/L and 763cfu/mL, respectively. The mean concentration values of Cd, Cu, Cr, Fe, Mn, Pb, Zn, and Ni in all samples were 0.0±0.1µg/L, 24.9±94.2µg/L, 2.7±5.6µg/L, 96.3±97.8µg/L, 4.1±7.4µg/L, 47.1±80.3µg/L, 92.4±129.9µg/L and 7.0±84.7µg/L, respectively, but Hg and As were not detected. And then no differences of heavy metal levels by drinking water types were observed.
황인철 高神大學校保建科學硏究所 1996 보건과학연구소보 Vol.6 No.-
GABA,gamma aminobutyric acid,is an inhibitory neurotransmitter in mammalian brain, and is a critical drug to lead many GABAergic compounds. Molecular mechanics calculation by MM+ parameters was used to find the optimal molecular geometries and to get their energies. Then to grasp Quantitative Structure Activity Relationship (QSAR) in GABA analogues, surface area,volume,hydration energy,refractivity, polarizability, and log werealso calculated. Only hydration energy was statistically correlated with a thermodynamic index, or an octanol/water partition coefficient,which means the larger hydration energy the less lipophilic.