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Park, Nyun-Bae,Park, Sang Yong,Kim, Jong-Jin,Choi, Dong Gu,Yun, Bo Yeong,Hong, Jong Chul Elsevier 2017 ENERGY Vol.121 No.-
<P><B>Abstract</B></P> <P>Energy saving potential and carbon dioxide (CO<SUB>2</SUB>) reduction potential of boiler technologies in the Korean industrial sector up to 2035 were analyzed using The Integrated MARKAL-EFOM System (TIMES) model based on bottom-up optimization. Final energy consumption by industrial indirect heating boilers in 2013 accounts for 7% of Korea's industrial energy consumption and 8% of the manufacturing sector's consumption. Energy consumption of industrial indirect heating boilers is expected to increase about 25% in the baseline scenario between 2013 and 2035. Technical potential against the baseline scenario by deploying only the most efficient technologies in new installation demand is 7.9% for energy saving and 20.7% for CO<SUB>2</SUB> reduction by 2035. The most efficient technologies by boiler technology types were gas-fired super boilers. Economic potential against the baseline scenario through market competition between existing and high efficient technologies is 5.6% for energy saving and 6.1% for CO<SUB>2</SUB> reduction by 2035. CO<SUB>2</SUB> reduction potential is higher than energy-saving potential because fuel substitution toward gas was added to the energy-saving effect due to efficiency improvement. Research and development, information disclosure, regulation, and incentives for high-efficiency boiler technologies are necessary to realize technical potential as well as economic potential in industrial indirect heating.</P> <P><B>Highlights</B></P> <P> <UL> <LI> We analyze technical and economic potential of highly efficient boilers in Korea. </LI> <LI> Energy saving potential is 7.9% technically and 5.6% economically by 2035. </LI> <LI> CO<SUB>2</SUB> reduction potential is 20.7% technically and 6.1% economically by 2035. </LI> <LI> Gas-fired super boiler will be the dominant technology in the mid- to long-term. </LI> </UL> </P>
작업장치 위치에너지 회생을 위한 하이브리드 굴삭기 시스템 개발
윤종일,DINH QUANG TRUONG,강종민,김재홍,안경관 사단법인 유공압건설기계학회 2009 드라이브·컨트롤 Vol.6 No.4
Nowadays with the high fuel prices, the demands for energy saving and green emission of construction machinery have highly been increased without sacrifice of working performance, safety and reliability. The aim of this paper is to propose a new energy saving hybrid excavator system using an electro-hydraulic actuator driven by an electric motor/generator for the regeneration of potential energy. A 5 ton class excavator is analyzed, developed with the boom for the evaluation of the designed system. The hardware implementation is also presented in this paper. A control strategy for the hybrid excavator is proposed to operate the machine with a highest efficiency. The energy saving ability of the proposed excavator is clearly verified through simulation and experimental results in comparison with a conventional hydraulic excavator.
작업장치 위치에너지 회생을 위한 하이브리드 굴삭기 시스템 개발
윤종일(J. I. Yoon),안경관(K. K. Ahn),딩광졍(D. Q. Truong),강종민(J. M. Kang),김재홍(J. H. Kim) 유공압건설기계학회 2009 드라이브·컨트롤 Vol.6 No.4
Nowadays with the high fuel prices, the demands for energy saving and green emission of construction machinery have highly been increased without sacrifice of working performance, safety and reliability. The aim of this paper is to propose a new energy saving hybrid excavator system using an electro-hydraulic actuator driven by an electric motor/generator for the regeneration of potential energy. A 5 ton class excavator is analyzed, developed with the boom for the evaluation of the designed system. The hardware implementation is also presented in this paper. A control strategy for the hybrid excavator is proposed to operate the machine with a highest efficiency. The energy saving ability of the proposed excavator is clearly verified through simulation and experimental results in comparison with a conventional hydraulic excavator.
조수연(Soo Youn Cho),이승복(Seung-Bok Leigh) 대한설비공학회 2017 설비공학 논문집 Vol.29 No.11
In accordance with 2015 Paris agreement, each individual country around the world should voluntarily propose not only its (individual) reduction target, but also actively develop and present expansion targets of its scope and concrete reduction goals exceeding the previous ones. Accordingly, it is necessary to prepare a macroscopic, long-range strategy for reducing energy consumption and greenhouse gas emissions, which can cover a single building, town, city and eventually even a province. The purpose of this research is to gather and compile government-acquired data from various sources and (in accordance with contents and specificity), combine building data by stages by using multi-variable matrix and then analyze the significance of combined data for each stage. The first order data presents the probability and the cost effectiveness of energy saving on the scale of a city or a province, based only upon general information, size and power consumption of buildings. The second order data can identify a pattern of energy consumption for a building of a specific purpose and which tends to consume a larger amount of energy during one particular season (than others). Finally, the third order data can derive influential factors (base load, humidity) from the energy consumption pattern of a building, and thus propose an informed and practical energy-saving method to be applied in real time.
에너지 대역분석 기법을 이용한 생산플랜트에서 에너지절감 잠재량 산정
박형준(Hyung-Joon Park),손진근(Jin-Geun Shon) 대한전기학회 2011 전기학회논문지 P Vol.60 No.4
Currently one of the most importance issues in industrial sector is energy cost and energy efficiency. The manufacturing plants especially have made many efforts to reduce energy cost by implementing maintenances. But in many cases, they are not aware that how much energy could be saved more. If we know the best energy consumption, which signifies energy baseline, we can control the intensity of maintenances. One way to obtain the baseline is using proper statistics from a specific plant, a sector of industry. Energy bandwidth signifies the gap between actual Specific Energy Consumption(SEC) of a certain plant and minimum SEC of the best plant, and estimate energy saving potential(ESP) is a result of bandwidth analysis. We chose a model plant and implemented some maintenance for a year, and then we obtained ESP. Additionally we could determine the decreased amount of carbon emissions from the plant using Carbon Emissions Factor(CEF) by Intergovernmental Panel on Climate Change(IPCC).
Jeong, Jaewook,Hong, Taehoon,Ji, Changyoon,Kim, Jimin,Lee, Minhyun,Jeong, Kwangbok,Koo, Choongwan Elsevier 2017 APPLIED ENERGY Vol.189 No.-
<P>Building energy efficiency rating (BEER) certification is an energy performance certificates (EPCs) in South Korea. It is critical to examine the cost saving potentials of the BEER-certification in advance. This study aimed to develop a prediction model for the cost saving potentials in implementing the BEER certification, in which the cost saving potentials included the energy cost savings of the BEER certification and the relevant CO2 emissions reduction as well as the additional construction cost for the BEER-certification. The prediction model was developed by using data mining, life cycle cost analysis, real option valuation, and Monte Carlo simulation. The database were established with 437 multi-family housing complexes (MFHCs), including 116 BEER-certified MFHCs and 321 non-certified MFHCs. The case study was conducted to validate the developed prediction model using 321 non-certified MFHCs, which considered 20-year life cycle. As a result, compared to the additional construction cost, the average cost saving potentials of the 1st-BEER-certified MFHCs in Groups 1, 2, and 3 were predicted to be 3.77%, 2.78%, and 2.87%, respectively. The cost saving potentials can be used as a guideline for the additional construction cost of the BEER-certification in the early design phase. (C) 2016 Elsevier Ltd. All rights reserved.</P>
외피 성능 및 공사비를 고려한 기존 공동주택의 에너지 절감 잠재량 분석에 관한 연구
한상희(Han, Sang-Hee),김길태(Kim, Gil-Tae),조건희(Cho, Gun-Hee),김종엽(Kim, Jong-Yeob) 한국건축친환경설비학회 2017 한국건축친환경설비학회 논문집 Vol.11 No.1
This study was conducted to improve the energy performance of the existing apartment house. From the 1980"s, which is the standard of outer wall performance, energy performance test was performed according to strengthen of outer wall performance. Next, we analyze the annual heating Use and costs saved through insulation and window replacement, which represent current insulation performance. Therefore, it is aimed to calculate the energy saving potential for energy policy. As a result, by 2016, performance deviations according to the performance criteria of apartment houses can be divided into 9 sections. The 84m2 type was primary energy of the middle, south, and Jeju regions were 390.8~166.2 kWh/m2·yr. In addition, the 84m2 type was energy saving potential was estimated to be about 8,523/m2 won for the middle region, about 7,052 won/m2 for the south region and about 6,469 won/m2 for the Jeju region. The average payback period for 84m2 type and 59m2 type was 7.07~13.16 years in the middle area, 8.03~12.09 years in the south area, and 4.59~7.46 years in the Jeju area. The potential cost of energy saving for the Jeju area was the highest.
에너지흐름도를 이용한 오피스에서의 대류공조시스템 대비 복사냉난방시스템의 에너지 저감 가능성 고찰
최소원(Choi So-Won),김동우(Kim Dong-Woo),박상훈(Park Sang-Hoon),신미수(Shin Mi-Su),여명석(Yeo Myoung-Souk),김광우(Kim Kwang-Woo) 대한건축학회 2011 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.31 No.2(계획계)
The purpose of this study was to analyze the energy efficiency of the radiant cooling and heating system with the map of energy flow in HVAC systems. One of the commonly used HVAC system in office, conventional forced air system is chosen to compare with radiant space conditioning system. The elements of HVAC systems are categorized according to thermal chain. Both of the HVAC systems are diagramized using energy chain, which is based on the energy balance equation. By the analysis of HVAC systems, the complex energy flow of HVAC system is simply presented. By analyzing energy flow map of the radiant cooling and heating system, the energy saving potential can be suggested.
건물에너지 절감을 위하여 시뮬레이션을 이용한 EMS 적용
곽영훈(Young-Hoon Kwak),천세환(Se-Hwan Cheon),이상문(Sang-Moon Lee),허정호(Jung-Ho Huh) 대한설비공학회 2010 대한설비공학회 학술발표대회논문집 Vol.2010 No.6
The purpose of this study is to develop an energy management system and to verify the proposed model by applying energy management technique in a real campus building. In this study the influence of the blind control and dimming control strategies in energy consumption and the energy saving potentials of a lighting system have been investigated by means of simulations with EMS of EnergyPlus. With blind control(application of EMS) and dimming control, light energy consumption and cooling energy consumption are reduced about 50% by baseline model.
건물에너지관리를 통한 사무소 건물의 에너지 절감 잠재량 분석
곽영훈(Kwak Young-Hoon),천세환(Cheon Se-Hwan),공동석(Kong Dong-Seok),곽노열(Kwak Ro-Yeol),허정호(Huh Jung-Ho) 한국건축친환경설비학회 2011 한국건축친환경설비학회 학술발표대회 논문집 Vol.2011 No.3
The purpose of this study is to develop a building energy management system and to verify the proposed model by applying energy management technique in a large office building. Until recently, operation and control that closely mimic a programmable EMS are unprecedented for building energy simulation programs. In this study the influence of the dimming control and setpoint temperature control strategies in energy consumption and the energy saving potentials have been investigated by means of simulation. An essential part of EMS class in the EnergyPlus program, Runtime Language(ERL), is used to specify the EMS control algorithms. With control strategies, whole building energy consumption are reduced by about 7.64%(electricity, dimming control), 0.01%(electricity, setpoint temperature control), and 0.95%(gas, setpoint temperature control) compared with a baseline model.