http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
오늘 본 자료
수치해석을 통한 대규모 지하주차장 기계환기 시스템 성능개선 설계방법 개발
박우평(Woo-Pyoung Park),조진균(Jinkyun Cho),김진호(Jinho Kim) 대한설비공학회 2020 설비공학 논문집 Vol.32 No.3
The design improvement of mechanical ventilation systems (which usually operate 24/7 year round) for underground parking lots is critical for human health and energy. In this paper, a mechanical ventilation system was re-designed and improved to solve the problems of ventilation performance and high fan energy use in a large underground parking lots. The inlets/outlets are at the ground level of the building, and the dilution method is used to calculate the required exhaust and supply ventilation rates. Two types of fan room for vent tower models (with sirocco fan and airfoil fan) were constructed and simulated under seven design procedures using computational fluid dynamics (CFD). For the mechanical ventilation of an underground parking lot with an airfoil fan, the ranges of the computed air flow rate and ventilation efficiency are consistent with the requirements of ventilation performance and design criteria. This system optimization procedure of the ventilation system that has been re-designed is effective in meeting the required air flow rate in underground parking lots.
고밀도 데이터센터의 에너지 저감을 위한 공조효율 평가방법에 관한 연구
조진균(Cho, Jin-Kyun),박우평(Park, Woo-Pyoung),신승호(Shin, Seung-Ho) 대한건축학회 2013 대한건축학회논문집 Vol.29 No.6
The goal of air management system of high-density data centers is to minimize re-circulation of hot air and minimize by-pass of cold air in the IT server room. Successfully implemented, both measures result in energy savings and better thermal conditions. Air management helps reduce operating costs by enhancing economizer utilization, improving cooling system efficiency. Metrics play an important role in providing a measure of the performance of air management systems. Performance indices include the Supply/Return Heat Index(SHI/RHI), the Rack Cooling Index(RCI) and the Return Temperature Index(RTI). CFD simulation estimates temperature, airflow in the data center and provides a wealth of information for evaluating cooling efficiency. This study describes four performance metrics for analyzing air management systems. They were computed with CFD modeling to evaluate the thermal environment in a typical data center module and 46 different design alternatives. In this paper, advanced and comprehensive evaluation index of cooling efficiency was also derived and well-crafted metrics will undoubtedly play an important role.
그린데이터센터 구현을 위한 공조/냉각 에너지 성능분석 프로그램 개발 및 기후대별 대안평가에 대한 연구
조진균(Cho, Jin-Kyun),박우평(Park, Woo-Pyoung),신승호(Shin, Seung-Ho),이진영(Lee, Jin-Young) 대한건축학회 2013 대한건축학회논문집 Vol.29 No.7
Data centers can consume up to 40 times as much electricity as standard office spaces. In an average data center, 40% of the electricity is consumed by the cooling system. This paper provides an overview of best practices for energy-efficient green data center design which spans the categories of IT environmental conditions, cooling systems. Therefore, the objective of this study is to develop a GDCEET: green data center energy evaluation tool that may be used by engineers and designers to assess the effectiveness and economic benefits of energy-saving cooling system under different climatic conditions. The developed tool is focused on energy consumption characteristics of data center cooling systems. The optimal green data center models were also derived by using evaluation tool and predict the PUE(power usage efficiency) under a wide range of IT operating conditions and different climate. It is anticipated that the developed tool will facilitate the integration of energy efficiency in green data center design and construction.
코어 위치와 종횡비 및 방위에 따른 건물 에너지 부하 분석
김진호(Kim, Jin-Ho),박우평(Park, Woo-Pyoung),신승호(Shin, Seung-Ho),민준기(Min, Joon-Ki),김동훈(Kim, Dong-Hoon) 한국지열·수열에너지학회 2013 한국지열에너지학회논문집 Vol.9 No.1
In this Study, effect of core position, area ration and orientation of building on energy load is examined using TRNSYS17. This parameters are major parameters of the conceptual design stage. Reference model is square floor plan(1,444m²), centered core and 29% core area ratio. As the results, without considering the building orientation, the annual heating load of central building with 1:1 area ratio is lowest(59.27 kWh/m²yr). As area ratio is bigger, cooling load is lower and heating load is higher. But if we consider building orientation, orders of heating load and cooling load are changed for area ratio and orientation.
사무소 건물 HVAC&R 시스템의 에너지 효율화 사례연구
조진균(Cho, Jin-Kyun),우경헌(Woo, Kyung-Hun),박우평(Park, Woo-Pyoung),신승호(Shin, Seung-Ho) 한국지열·수열에너지학회 2013 한국지열에너지학회논문집 Vol.9 No.1
HVAC&R systems are the most energy consuming building services representing approximately half of the final energy use in the building sector. Despite their significant energy use, there is a lack of a consistent and homogeneous framework to efficiently guide research, mainly due to the complexity and variety of HVAC&R systems but also to insufficient rigour in their energy analysis. This research reviews energy consumption of HVAC&R systems with the aim of establishing a common idea for the analysis of energy efficiency. The paper focuses on energy flow of the HVAC&R which include air-conditioning, transport and heat generation system for low-energy buildings.