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복합건물(D-Cube City) 지역에너지 공급체계 최적화
이태원(Tae Won Lee),김용기(Yong Ki Kim),이건우(Kun Woo Lee),이기봉(Ki Bong Lee),조동호(Dong Ho Cho) 대한기계학회 2012 大韓機械學會論文集B Vol.36 No.6
최근에 준공된 디큐브시티는 사무용, 상업용, 숙박용 및 관람집회용 등 4개의 시설이 공존하는 복합건물이다. 이 건물에는 필요로 하는 전기와 증기, 온수 및 냉수를 공급하기 위해 구역형 에너지공급시스템(Community energy supply system)이 설치되었다. 다양한 건물설비를 효과적으로 운영하기 위해 건물에너지관리시스템(Building energy management system)의 설치를 검토하고 있다. 본 연구에서는 3개의 열병합발전시스템을 비롯하여 7대의 증기보일러, 2대의 중온수보일러와 2대의 흡수식냉동기 및 4대의 터보냉동기 등으로 구성되는 구역형 에너지공급시스템의 최적 운전 및 설계방법을 검토하였다. 결과로서 에너지 수요변화에 따른 구역형 에너지공급시스템의 최적 운전방법과 계절적 운전조건의 변화가 시스템의 경제성에 미치는 영향을 규명하였다. 또 시설별 규모에 따라 결정되는 에너지 수요가 건물 전체의 에너지 소비에 미치는 영향도 분석하였다. D-Cube City is a recently completed multi purpose building consisting of four types of facilities; offices, a department store, a hotel, and congregation spaces. A community energy supply system(CES) has been installed to supply this building with electricity, steam, heat, and cold water. The BEMS, building energy management system, is currently being designed to reduce building energy consumption through the efficient operation of the various pieces of building service equipment. In this study the optimal methods for operating the CES of D-Cube City were considered. This system includes three combined heat and power systems, seven steam boilers, two hot water boilers, two absorption chillers, and four turbo chillers, and various other pieces of equipment. In result, the optimal methods of operating the CES for various energy demand levels were obtained along with the seasonal effects on the economic efficiency of the operation. The effect of the amount of energy demanded by the various facility areas on the total energy consumption was also analyzed.
복합건물(D-Cube City) 지역에너지 공급체계 최적화
이태원(Tae-Won Lee),김용기(Yong-Ki Kim),이건우(Kun-Woo Lee),이기봉(Ki-Bong Lee),조동호(Dong-Ho Cho) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.10
The D-Cube City is a multi-purpose building which completed recently, consisted of four type of facilities such as office, department, hotel and congregation space. A community energy supply system is installed to supply this building with electricity, steam, heat and cold water. The BEMS, building energy management system, is under consideration to reduce building energy consumption through the operation of the various building service equipments efficiently. The optimal operation methods were considered in this study for the community energy supply system(CES) for D-Cube City including three combined heat and power systems, seven steam boilers, two hot water boilers, four absorption chillers and two turbo chillers and so on. As results the optimal operation methods of the CES with energy demands and seasonal effect of the operation on the economic efficiency were obtained.
이태원(Tae-Won Lee),김용기(Yong-Ki Kim),우남섭(Nam-Sub Woo) 대한설비공학회 2009 설비공학 논문집 Vol.21 No.11
The service quality with the various building equipments tends to depend on the individual superintendent’s capability and efforts generally and this often lead to poor maintenances and managements of them. N-BMS(Networked Building Management System), proposed in this study, is a new type of building management method, which links principal equipments within many buildings into a communication network and carries out several significant missions such as fault detection, deterioration diagnosis and control the equipments and so on, as well as monitoring which is the main and unique purpose of the conventional BMS. How to construct the N-BMS was considered to keep performance of equipments high and thus to save energy and resource. LCC(Life Cycle Cost) based analysis was also performed in order to verify the effects of some maintenance and management works for the building HVAC systems.
국내 도시기반 에너지ㆍ환경 플랜트의 문제점 및 대응방안
이태원(Tae-Won Lee),우남섭(Nam-Sub Woo),김용기(Yong-Ki Kim) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
Demands for the highly efficient and high performance urban utility plants such as energy plants(with renewable energy resources) and various environmental facilities having been continuously increased all over the world according to the environmental regulation, like the Kyoto protocol and the European Emission Trading Scheme. So new clean technology branches, such as renewable energy, combined heat and power(CHP), district heating and cooling(DHC), mechanical, biological and thermal treatment(MBT) and so on, are entering the energy plant market. But the domestic market in this fields are largely depends on the foreign technologies in Korea, and therefore the development of original design and construction technologies for various urban utility plants becomes urgent problems. The problems of the domestic urban utility plants analyzed in this study and the multipurpose integrated system model for various urban energy and environmental plants had also been proposed which could be the alternative suitable to the present situation of Korea.
지역냉난방 활성화를 위한 기술개발 및 제도개선방안 검토
이태원(Tae-Won Lee),우남섭(Nam-Sub Woo) 대한설비공학회 2009 대한설비공학회 학술발표대회논문집 Vol.2009 No.-
Demands for the high efficient and high performance energy supply system having been continuously increased according to the environmental regulation like the Kyoto protocol and rapid increases of energy cost all over the world. District heating and cooling system with combined heat and power plant is able to offer massive and collective heating and cooling energy production, which is higher in efficiency than conventional systems. The objective of this paper is to study the performance of new DHC systems with CHP in terms of fuel consumption, CO₂ emission and so on. The calculated results show that the new systems are able to reduce fuel consumption and CO₂ emission compared with conventional system. The economic analysis of the new systems are also carried out in terms of the raise of thermal charge, CO₂ tax and the unit cost of electric power generation.
이태원(Tae-Won Lee),오무혁(Moo-Hyeok Oh),김건우(Geon- Woo Kim),정지혜(Ji-Hye Jeong),윤성민(Sung-Min Yoon),라호원(Ho-Won Ra),문종호(Jong-Ho Moon),서명원(Myung-Won Seo) 한국환경에너지공학회 2023 열환경공학 Vol.18 No.1
Ash agglomerates deposited on the heat exchanger causes slagging and fouling, which decreases efficiency of heat exchanger of boilers. The ash fusion temperature can be important factor of slagging and fouling. This paper presents a prediction model for deformation temperature of woody biomass ash. There are two prediction model: one is quadratic and cubic model using index A by correlation coefficient, and other model is calculated by multiple linear regression using components and indices of previous studies. The coefficients of determination(R2) of quadratic model, cubic model, and multiple linear regression model are 0.835, 0.8367, 0.9175, respectively. Therefore, multiple linear regression model can predict deformation temperature of biomass ash.
이승하,이태원,심우진,Lee, Seung-Ha,Lee, Tae-Won,Sim, Woo-Jin 대한기계학회 2002 大韓機械學會論文集A Vol.26 No.10
In this paper, the deformed shape, the contact forces and the load-displacement curves of the real hollow gasket made of silicon rubber are analyzed using a commercial finite element program MARC. In the numerical analysis, the silicon rubber is assumed to have the properties of the geometric and material nonlinearity and the incompressibility, and the hyperelastic constitutive relations of that material are represented by the generalized Mooney-Rivlin and Ogden models. The outer frictional contact between the hollow gasket and the groove of rigid container and the inner self-contact of the hollow gasket are taken into account in the course of numerical computation. Experiments are also performed to obtain the material data for numerical computation and to show the validity of the mechanical deformation of the hollow gasket, resulting in good agreements between them.