http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
동적 에너지 시뮬레이션을 이용한 수열원, 지열원 및 공기열원 히트펌프 시스템의 성능 비교분석
권영식(Kwon Youngsik),배상무(Bae Sangmu),남유진(Nam Yujin),윤린(Yun Rin),박창용(Park Chang Yong),이호성(Lee Hoseong) 한국태양에너지학회 2021 한국태양에너지학회 논문집 Vol.41 No.4
As the boundary of water source energy has recently expanded to the use of river, lake, and pond waters, the water source heat pump (WSHP) system is becoming a major issue. However, to apply the WSHP system to a real building, a comparison and analysis with a ground source heat pump (GSHP) and an air source heat pump system (ASHP) are required. Moreover, it is necessary to accurately analyze the performance of a WSHP based on the building load condition. Therefore, this study aims to analyze the performance of WSHP, GSHP, and ASHP systems for large office buildings using a dynamic energy simulation. The seasonal performance factor (SPF) of the system was calculated as 3.8 and 2.5 for a WSHP system, 3.8 and 2.6 for a GSHP system, and 2.9 and 1.7 for an ASHP system during the cooling and heating periods, respectively. The performance of the WSHP system was similar to that of the GSHP system and was 23% and 32% higher than that of the ASHP system, respectively.
최적화 수법을 이용한 수열 히트펌프 시스템의 용량 산정법 개발에 관한 연구
권영식(YoungSik Kwon),남유진(Yujin Nam) 대한설비공학회 2021 대한설비공학회 학술발표대회논문집 Vol.2021 No.6
The water source heat pump(WSHP) system is a renewable energy system that uses river water, seawater and pond water. It has a higher temperature than the outside air during the heating period and a lower temperature than the outside air during the cooling period. Also, as the range of water source energy expands, so does the interest in WSHP system. However, the reality is that there is a lack of research on how to design WSHP system. Therefore, in this study, we propose a design method for a WSHP system using an optimization method. The optimization was carried out with the variables of the heat pump cooling, heating capacity and the volume of the heat storage tank. As a result of the optimization, the cooling capacity of all Case heat pumps decreased and the heating capacity increased. Then, the volume of the heat storage tank was calculated at the minimum value in all cases. In terms of cost, according to the conventional design method, the total cost of the initial investment cost and the operating cost of the system for 20 years was calculated to be 310 million won. The total cost of the WSHP system can be reduced maximum 34% by using Particle swarm algorithm.
DFSS 방법을 이용한 PT Mount 해석 하중 조건과 시험의 연관성
박원준(Wonjun Park),권영식(Youngsik Kwon),이주현(Juhyun Lee),김용석(Yongsuk Kim) 한국자동차공학회 2014 한국자동차공학회 학술대회 및 전시회 Vol.2014 No.11
The Powertrain Mount brackets, the most important part to support Powertrain connecting to the main vehicle body, are composed of Bracket and Mount. These Mount brackets should be designed to endure durability and vibration characteristic considering of vehicle dynamic behavior. Because Powertrain Mount brackets are principal load supporting part transferring the biggest load from Powertrain to body. So it is important to predict an accurate performance by correct loading position and stress evaluation study, and by physical test in the mount brackets development process. This paper is to study correlation of loading condition between powertrain mount CAE analysis and physical test results, especially input loading condition of Mount passing from powertrain to vehicle body. For this study, Mount bracket fracture test results are used and the loading conditions reflecting actual physical phenomena are suggested by using DFSS with different variables.