• The Magazine for Energy Service Companies
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• s.84
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• pp.30-33
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• 2013

• The Magazine for Energy Service Companies
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• s.78
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• pp.40-43
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• 2012

• Korea Journal of Geothermal Energy
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• v.9 no.2
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• pp.22-27
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• 2013

• Transactions of the Korean Society of Mechanical Engineers B
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• v.36 no.6
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• pp.669-674
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• 2012

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.

• The Journal of the Korea institute of electronic communication sciences
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• v.16 no.6
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• pp.1223-1230
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• 2021

Recently, energy resource management is a major concern around the world. Energy management activities minimize environmental impacts of the energy production. This paper presents design and prototyping of a home electric energy monitoring system that provides residential consumers with real time information about their electricity use. The developed system is composed of an in-house sensing system and a server system. The in-home sensing system is a set of wireless smart plug which have an AC power socket, a relay to switch the socket ON/OFF, a CT sensor to sense current of load appliance and a Kmote. The Kmote is a wireless communication interface based on TinyOS. Each sensing node sends its detection signal to a home gateway via wireless link. The home gateway stores the received signals into a remote database. The server system is composed of a database server and a web server, which provides web-based monitoring system to residential consumers. We analyzed and presented energy consumption data from electrical appliances for 3 months in home. The experimental results show the promising possibilities to estimate the energy consumption patterns and the current status.

• 월간 기계설비
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• s.25
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• pp.70-79
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• 1992

• Construction Engineering and Management
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• v.12 no.5
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• pp.38-42
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• 2011

• KIPE Magazine
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• v.15 no.5
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• pp.23-27
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• 2010

실생활환경 그린IT 기술 실증 테스트베드는 최근 에너지절감을 위한 하나의 해법으로 논의되고 있는 단위 건물에 대한 직류배전 기술 이외에 건축기술 기반의 공간, 냉난방, 환기, 빛 환경 에너지 성능평가 기술과 주택 유형별, 가구별 전력 에너지 관리 기술, IT기반 기술 등을 활용하여 그린IT기반 요소기술의 성능 검증, 기술개발, 신시장창출을 위한 실증테스트환경 모델과 산업활성화 기반을 구축하는 것이다. 이 중 향후 완성될 실증 테스트베드 건물에 적용하기 위하여 본 기관에서 수행하고 있는 직류배전분야에서의 주요 연구내용 및 연구방향, 고려사항들을 논의하고자 한다.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.33 no.3
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• pp.1225-1234
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• 2013

According to the importance of greenhouse gas emissions, it grows day by day, the goverment is promoting to prepare the specific policy implementation to enhance building energy-saving design standars as the development agenda. In this study, the statistical analysis was performed by Descriptive statistics, Regression analysis, and Hypothesis testing to collect to generate and storage energy usage data in real time to settle parameter setting to affect energy consumption under energy-guzzling apartment not single building. This study is expected to be utilized as the basis for the optimum energy-saving design of the future of the building or facility energy costs rise and the demand for energy-efficient and stable management.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.6
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• pp.4170-4175
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• 2015

The global warming has been recognized as a serious problem. To solve this problem, the country of all the world have conducted techniques such as energy saving and reduction of greenhouse gas. The 30% of total energy is being consumed by buildings domestically and BAS/BEMS are being operated for the management of building energy. But, BEMS is unsatisfactory condition to manage the energy efficiently. In this study, We investigate real application on Chamsaem elementary school as a target buildings and develop 3D Web Browser platform. The spatial information of target buildings is described with used BIM and the energy information is presented for facilities operation and electricity consumption in floor and facility. We perform the quantitative evaluation based on ISO/IEC 9126 and operate this system for two months. in result, energy decreased by about 16%. We expect that the proposed 3D Web Browser system will bring operating efficiency improvement of the current BEMS.