• Electronics and Telecommunications Trends
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• v.26 no.6
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• pp.21-36
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• 2011

우리나라 전체 에너지 사용량의 40% 정도를 차지하고 있는 아파트형 주거 밀집공간, 대규모 상업건물, 정부 및 대기업의 사무용 공공건물에서 에너지 사용을 절감하기 위한 방안으로 기존 건물 위주의 수동적 제어방법에서 한 단계 앞선 최신의 ICT 기술을 접목하여 능동적으로 건물 에너지를 관리하는 방법이 강구되고 있다. 특히 소비자의 움직임 및 사용공간 정보를 활용하여 소비자의 만족도를 저해하지 않으면서 건물의 에너지 사용량을 최소화하기 위한 기술이 논의되고 있다. 즉, 조명, 냉난방/공조, 전기기기의 에너지 사용량을 30%까지 절감하기 위한 기술이 연구되고 있는데, 본 고에서는 사용자의 만족도는 향상시키면서 건물 에너지는 절약할 수 있는 기술동향에 대해 언급한다.

• 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.

• Journal of Energy Engineering
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• v.13 no.4
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• pp.296-300
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• 2004

Performance evaluation and economic estimation were conducted on the water to water GSHP (Ground Source Heat Pump) installed in existing building. Ground heat exchanger was a closed vertical loop type and sized to be 5 boreholes and 100m depth per borehole. Operation efficiency of the system shows that, COP increased from 3.0 to 4.2 with entering water temperature in heating operation, however, COP decreased from 5.0 to 3.7 in cooling operation. Economic estimation was analyzed by LCC (Life Cycle Cost) method and it showed that GSHP could save 68% of cost compare to the conventional oil source. Thus, despite of the large amount of initial cost, GSHP has a economic advantage to the other energy sources.

• Journal of Energy Engineering
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• v.29 no.1
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• pp.25-33
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• 2020

Recently, as the mandatory policy of zero energy building is promoted, policies / systems for transition to Zero Energy School are being promoted, but there is no method to systematically analyze and verify the results of energy saving activities for school buildings. For the study of energy performance verification methodology, the current status of related standards was referred to, and the case study of other methodologies was conducted to examine the tools that can analyze the performance in the field. In addition, this study analyzed the current status and characteristics of energy management through domestic school visits. In this paper, we presented various energy saving projects such as air conditioning and heating facilities, lighting, insulation, change operation behavior, and improve operation methods in new and existing school buildings, and M & V methods for verifying energy savings before and after implementation of energy conservation projects.

• Information and Communications Magazine
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• v.30 no.10
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• pp.25-31
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• 2013

본고에서는 건설기술과 IT기술이 융합된 건설IT융합기술에서 스마트 빌딩과 관련하여 안전, 건강, 편의, 에너지를 위한 기술들로 분류하여 사례와 함께 서술한다. 고층 빌딩의 안전성을 위한 건축 구조물 건전도 모니터링 기술, 빌딩 실내 또는 지하 주차장에서 쾌적한 공기 환경을 유지하기 위한 스마트 환기제어 시스템 기술, 빌딩 정보의 체계적인 데이터 관리를 위한 빌딩정보모델링 기반의 센서와 영상 인터페이스, 스마트 빌딩 네트워크 관리 시스템에 관하여 소개한다. 또한, 에너지 절감을 위한 빌딩 에너지 관리 시스템에 관하여 냉난방, 조명, 환기설비, 전력모니터링 관련 기술에 대하여 설명한다. 이러한 기술들을 적용한 스마트 빌딩은 유무선통신, 스마트디바이스와 같은 IT기술을 건축공학 및 빌딩자동제어, 설비 기술에 적용하여 빌딩 사용자에게는 안전 및 최적 환경을 제공하고 빌딩 소유주나 관리자에게는 관리비용 절감, 관리 편의, 빌딩가치 상승 등을 제공할 수 있다.

• The Magazine for Energy Service Companies
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• s.61
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• pp.20-25
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• 2009

지난 10월 14일 서울 삼성동 코엑스홀에서 공공 및 민간부문 에너지관리자, 산업체, 건물 에너지 절약업무 관계자, ESCO업체 관계자 등 100여 명이 참석한 가운데 우수 ESCO 기업으로 선정된 (주)에너지솔루션즈와 한국하니웰(주)에 대한 시상, 두 기업의 우수사례발표, ESCO 사업 활성화 방안을 발표하는 시간을 가졌다. (주)에너지솔루션즈는 국민연금 강남사옥과 서울대학교, 웅진에너지(주)의 냉난방설비 및 수축열시스템 사례를, 한국하니웰(주)은 산업체의 공정개선 및 건물에너지절약 투자사례를 발표하였다. 참석자들은 기업의 실제 우수사례 공유를 통해 유용한 정보를 획득할 수 있는 뜻깊은 시간이었다고 평가했다. 에너지관리공단 관계자는 "오늘날 에너지효율향상은 저탄소 녹색성장을 위한 핵심이자 기업의 경쟁력과도 직결되고 있다"며, "기업의 에너지절약과 경제에 도움을 주는 ESCO 사업을 널리 알려 투자를 촉진하고 에너지절감효과가 큰 설비 보급을 확대하는 좋은 계기가 될 것"이라고 말했다. 이번 행사에서 우수사례로 선정된 (주)에너지솔루션즈와 한국하니웰(주)의 ESCO투자사례를 살펴보자.

• Journal of Energy Engineering
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• v.27 no.4
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• pp.20-26
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• 2018

As the global warming due to greenhouse effect has become serious problem, it is necessary to introduce the technology, for instance, such as diversity or saving of energy to reduce the use of fossil fuel. The purpose of this study was to investigate the characteristics on materials of absorption plate, unpowered and minimum use of power in cooling and heating combined device. As the results, it was observed that, in case of summer, since temperature of absorption device of solar heat(ADSH) was lower than that of no ADSH, cooling effect was insignificant in case of being not installed cold-reservoir. However, in case of winter, heating effect was certified even though the power was not used. At secondhand, the performance of ADSH with Cu was higher 2 times than that of ADSH with Al.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.4
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• pp.1419-1426
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• 2012

The heating and cooling energy load of the KNU plant factory was analyzed using the DesignBuilder. Indoor temperature set-point, LED supplemental lighting schedule, LED heat gain, and type of double skin window were selected as simulation parameters. For the cases without LED supplemental lighting, the proper growth temperature of lettuce $20^{\circ}C$ was selected as indoor temperature set-point together with $15^{\circ}C$ and $25^{\circ}C$. The annual heating and cooling loads which are required to maintain a constant indoor temperature were calculated for all the given temperatures. The cooling load was highest for $15^{\circ}C$ and heating load was highest for $25^{\circ}C$. For the cases with LED supplemental lighting, the heating load was decreased and the cooling load was 6 times higher than the case without LED. In addition, night time lighting schedule gave better result as compared to day time lighting schedule. To investigate the effect of window type on annual energy load, 5 different double skin window types were selected. As the U-value of double skin window decreases, the heating load decreases and the cooling load increases. To optimize the total energy consumption in the plant factory, it is required to set a proper indoor temperature for the selected plantation crop, to select a suitable window type depending on LED heat gain, and to apply passive and active energy saving technology.

• Journal of the Korea Institute of Building Construction
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• v.10 no.2
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• pp.97-104
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• 2010

This study evaluated the energy efficiency of a windows system using built-in blinds, with regard to their insulation performance and their blocking of solar radiation. The study took advantage of the "Physibel Voltra" program as a physical simulation of heat transfer. To simulate the "Physibel Voltra" program, I practiced a mock-up test to determine heating quality and translation condition. I analyzed the propensity to annual energy consumption, the annual quantity of heat transfer, and the annual cooling and heating cost through a computer simulation for one general household in an apartment building. In the test, it was found that compared to a general windows system, a windows system with built-in blinds reduced the annual heat transfer by 10% in cooling states and by 11% in heating states when the blind was up. When the blind was down, the windows system with built-in blinds reduced the annual heat transfer by 25% in cooling states and 30% in heating states. When a windows system with built-in blinds is compared with a general windows system, the quantity of cooling and heating loads is reduced by 283.3kw in cooling states and 76.3kw in heating states. This leads to a reduction in the required cooling and heating energy of 359.6kw per house. It is thus judged that the use of a windows system with built-in blinds is advantageous in terms of reducing greenhouse gas emissions, because the annual TOE (tons of oil equivalent) per house is reduced by 0.078TOE, while $tCO_2$ is reduced by $0.16tCO_2$. In addition, compared with a general windows system, the cost of cooling and heating loads in the system reduces the annual cooling cost by 100,000won, and the annual heating cost by 50,000won. Ultimately, this means that cooling and heating loads are cut by 150,000won per year.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.19 no.6
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• pp.1-8
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• 2005

The quantity of light available for a space can be translated in term of the amount of energy savings through a process of a building energy simulation. To get significant energy savings in general illumination, the electric lighting system must be incorporated with a daylight - activated dimmer control. A prototype configuration of an once interior has been established and the integration between the building envelope and lighting and HVAC systems is evaluated based on computer modeling of a lighting control facility. First of all, an energy-efficient luminaire system is designed and the lighting analysis program, Lumen-Micro 2000 predicts the optimal layout of a conventional fluorescent lighting future to meet the designed lighting level and calculates unit power density, which translates the demanded met of electric lighting energy. A dimming control system integrated with the contribution of daylighting has been applied to the operating of the artificial lighting. Annual cooling load due to lighting and the projecting saving amount of cooling load due to daylighting under overcast diffuse sky m evaluated by computer software ENER-Win. In brief, the results from building energy simulation with measured daylight illumination levels and the performance of lighting control system indicate that daylighting can save over 70 percent of the required energy for general illumination in the perimeter zones through the year A 25[%] of electric energy for cooling and almost all off heating energy may be saved by dimming and turning off the luminaires in the perimeter zones.