http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
연료공급 및 냉각계통 개념설계를 위한 프레임워크 이용 프로그램 개발 연구
최세영(Seyoung Choi),박수용(Sooyong Park),박상준(Sangjoon Park),김준태(Juntae Kim),박정배(Jeongbae Park),정성민(Sungmin Jung) 한국추진공학회 2016 한국추진공학회 학술대회논문집 Vol.2016 No.5
고속 비행체 연료공급 및 냉각계통의 통합설계를 위한 개념설계 도구를 상용 열유체 시스템 설계프로그램을 이용하여 개선하였고, 이에 대한 프로그램 구성 및 입출력 구조를 나타내었다. 향상된 프로그램은 효율적인 입출력 처리와 계산 모듈 통합으로 편의성이 증가되었다. 이를 이용하여 적절한 통합시스템 설계에 적용 할 수 있다. In this study, we propose a conceptual design tool for developing fuel supply and engine cooling systems for high-speed vehicles. The design tool program was improved using the fluid–thermal system design framework, which was applied to ensure efficient data processing by using combined modules. We propose this program structure and data flow. Our proposed design tool is suitable for designing components.
냉장고 사이클의 LCCP(Life Cycle Climate Performance) 평가
최세영(Seyoung Choi),정유준(Yujun Jung),이호성(Hoseong Lee) 대한설비공학회 2017 대한설비공학회 학술발표대회논문집 Vol.2017 No.6
In order to prevent climate change such as global warming, greenhouse gas reduction is important and various efforts are made throughout the economy. LCCP (Life Cycle Climate Performance) was developed to evaluate the environmental impact of the refrigeration and air conditioning system. The LCCP consists of Direct emissions which are related to refrigerants and Indirect emissions which are from other factors besides refrigerants. From this point of view, the largest share of CO2 emissions are from energy consumption. In this study, LCCP evaluation for various cycles was carried out based on 800 liters refrigerator which is widely used as domestic refrigerator. In the refrigerator cycles using two evaporators, there are Serial circuit cycle, Bypass circuit cycle and Parallel circuit cycle according to the connection method of the evaporators. Parallel circuit cycle reduces CO2 emissions by 23% than baseline cycle.
최세영(Seyoung Choi),박수용(Sooyong Park),최현경(Hyunkyung Choi),전필선(Pilsun Jun),박정배(Jeongbae Park) 한국추진공학회 2012 한국추진공학회 학술대회논문집 Vol.2012 No.11
고속 비행체에 있어 공력에 의한 표면 가열과 내부의 발열 문제의 해결을 위해서는 적절한 연료의 선택, 이를 공급하기 위한 장치 구성, 그리고 이들을 적용한 냉각 체계 등의 부시스템이 필요하다. 이는 연료, 탱크, 연료공급을 위한 펌프, 다양한 조절 밸브, 촉매반응기를 포함한 열교환기, 구성품을 연결하는 배관, 벽면 단열 구조물 및 단열재 등의 구성품을 포함한다. 본 연구에서는 고속 비행체에 있어서 비행 특성에 따른 적용가능 연료의 특성을 고찰하였으며, 이에 따른 연료의 공급 및 냉각 시스템의 적용 기술 및 기술동향을 파악하였다. In high-speed vehicle, selection of fuel, configuration of components and cooling system are required to solve the heating issue by aerodynamic heating and inner combustion process. This subsystem consists of fuel, tank, fuel supply pump, various control valve, heat exchanger, including reactor, connecting line, adiabatic structures, insulations. In this paper, applicable fuel property is considered at flight characteristic of hypersonic vehicles. in this regard, current state of fuel/cooling system technology is identified.
한국 기후조건에서 응용 증기 압축 사이클의 LCCP (Life Cycle Climate Performance) 평가
최세영(Seyoung Choi),이호성(Hoseong Lee),Yunho Hwang 대한설비공학회 2016 대한설비공학회 학술발표대회논문집 Vol.2016 No.6
The environmental impacts of the energy conversion systems have been a leading research topic due to global climate change. In residential building, the space heating and space cooling are main energy consumers, which are mainly relaying on a vapor compression cycle (VCC). In an effort to better understand the environmental impacts of these systems, life cycle climate performance (LCCP) evaluation method was developed. This method considers the direct and indirect emissions of the system over the course of its lifetime from manufacturing to disposal. Based on the developed LCCP evaluation method, various VCC options are evaluated. For the VCC, the various cycle models are developed and evaluated including a suction line heat exchanger cycle, expander cycle, ejector cycle, vapor injection cycle, and saturation cycle.
최세영(Seyoung Choi),박수용(Sooyong Park),최현경(HyunKyung Choi),김준태(Joontae Kim),정해승(Haeseung Jeong),박정배(Jeongbae Park) 한국추진공학회 2013 한국추진공학회 학술대회논문집 Vol.2013 No.5
고속 비행체에 연료를 공급하고, 내/외부의 열부하를 처리하기 위한 연료공급 및 냉각계통의 예비 열설계를 수행하였다. 먼저 임의의 임무형상을 설정하고 이를 만족시키기 위한 해석 모델을 구성하였다. 경계조건을 설정하여 열부하량을 산출하고 검증하였다. 다음으로 해석 궤도에 대한 연료소모율을 도출하였고, 이에 따른 연료의 흡열성능을 이용하여 시스템의 냉각성능을 산출하였다. 이를 냉각 소요량과 비교하여 설계 요구조건을 충족시키는지를 확인하였다. In this study, preliminary thermal sizing was performed with the aim of developing a fuel supply and cooling system design to solve the heating problems in high-speed vehicles. First, an analysis model was used to satisfy an optional mission profile. The heat loads were computed under boundary conditions. The results were verified using the precedent design case. Then, fuel consumption rates were estimated for the analysis trajectory. Accordingly, the cooling capacity in the system was calculated using the heat sink capacity of the endothermic fuel. Lastly, the fulfillment of the design requirements was confirmed in comparison to the cooling needs.