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재실밀도의 변화에 따른 건물에너지 사용량 분석을 위한 예비조사
최종대(Choi JongDae),윤근영(Yun, GeunYoun) 한국태양에너지학회 2011 한국태양에너지학회 학술대회논문집 Vol.2011 No.11
This paper reports the Survey results from a field monitoring study of office occupancy densities. The field measurement of a office in Yongin was carried out from 19 September to 30 September 2011. The survey has an aim to reveal the building energy consumption relationship between occupancy densities of a realistic office and the previous studies. The results showed that hourly occupied density of the previous studies is more higher than a field survey. we investigated the effects of difference occupancy densities on annual heating and coolingenergy consumption using EnergyPlus. Heating and cooling consumption was raisedbecause of the increased occupancy density. therefore, accurately measuretheoccupnacy schedule is important inorder to reduce excessive building energy consumption, and is an significant element to be considered in the energy simulation.
동적 계획법을 적용한 변속기 매개변수에 따른 연비 민감도 분석
최종대(Jongdae Choi),정종렬(Jongryeol Jeong),박영일(Yoeng-il Park),김덕진(Deokjin Kim),이춘범(Chunbeom Lee),차석원(Suk Won Cha) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5
Nowadays high oil price and emission of CO₂ are serious problems. Many companies are researching and supplying HEV. However there are not enough performance tests for commercial HEV. Among the tests, this study researched that parameters affect how much fuel economy changes in Parallel hybrid electric vehicle. Especially it is considered for transmission parameters sensitivity. Dynamic programming which is a technique to solve optimization problems was applied to calculate fuel economy of the vehicle. Based on the results of research, fuel economy according to transmission parameters is insignificant. In addition, more various parameters must be analyzed.
E-REV 버스의 전기 주행 가능 거리를 고려한 배터리 용량 선정 연구
최종대(Jongdae Choi),이대흥(Daeheung Lee),정종렬(Jongryeol Jeong),박영일(Yeongil Park),차석원(Suk Won Cha) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
Nowadays, there are many researches about Electric Vehicle (EV) because of high oil prices and exhaust gas. However EV has limited mileage yet. To improve this problem, researches for Extended-Range Electric Vehicles (E-REV) which have a light internal engine to generate additional electric are progressing considerably. In this study, battery sizing process for E-REV Bus is discussed based on the required All Electric Range (AER). Once target performances like AER are decided, battery capacity is calculated using simple equation and backward simulation. To verify backward simulator’s reliability, it is compared with AUTONOMIE results. State of Charge (SOC) of battery pack is limited from 90% to 20% of the total battery capacity and simulations are conducted under several driving cycles. Considering the AER, the battery capacity and electric economy for regenerative ratio are obtained .
E-REV 버스의 구동 성능 분석을 위한 전방향 시뮬레이터 개발
최종대(Jongdae Choi),이대흥(Daeheung Lee),정종렬(Jongryeol Jeong),이희윤(Hee Yun Lee),박영일(Yeongil Park),차석원(Suk Won Cha) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
Because of high oil prices and emission gas problems, many governments tighten regulation of fuel economy and emission gas. For passenger car, there are many researches for plug-in hybrid electric vehicles and they are being manufactured. On the other hand, there are few researches for plug-in hybrid electric bus that is heavy commercial vehicle. In this study, components sizing of E-REV bus is conducted considering target vehicle performance and AER. Based on results of components sizing, forward simulator is developed for analysis of E-REV bus using Autonomie.