• Journal of Digital Convergence
• /
• v.12 no.11
• /
• pp.365-372
• /
• 2014

In this paper, We implement a power-saving and efficient measures in buildings using the smart-meter. In order to save electric power energy, We propose an improved automatic power-factor controller(APFC) and demand control measures. This is achieved by controlling directly circuit breakers and the capacitor bank feeders in real time via a two-way smart-meter's ICT skills. Improved APFC is minimizing installation costs by series-parallel connecting heterologous capacitors to form a more diverse capacitor banking and controlling using the smart-meter. In order to suppress the demand power, We have designed a smart-meter with communication functions using Atmel's AVR465 and tested an operated lodging building for 24-hours. As a result, We made sure to always retained more than 95% power factor and did not occur over compensation.

• Korean Journal of Construction Engineering and Management
• /
• v.13 no.6
• /
• pp.3-12
• /
• 2012

The slowdown of private building industry resulted in growth of remodeling market as a way to improve energy performance. Remodeling is considered more cost-effective and eco-friendly approach for energy efficient building than new construction. Since 2008, Seoul has promoted Building Retrofit Project (BRP) preponderantly to attract energy-saving renovation by supporting building owners to switch building system into energy-saving system when they remodel their old buildings. According to 2012 press release, 254 Private sectors participated in this green building project and annually reduced 41000ton of greenhouse gas emission, 14000TOE, which also result in 7.5 billion won energy cost savings per year. The paper focuses on the building envelope remodeling as a way to improve energy efficiency. Different components of the building envelope such as wall insulation, window, and shading, were applied to the baseline model and the comparison was analyzed to come up with the ideal solution. This study only assesses the building envelope as to suggest the way to redesign the better energy performing building. Offering solution focusing on the architectural feature is essential because it will provide basic information and standard when remodeling a building for energy efficiency, especially, for the nonresidential buildings used as rental offices.

• Information and Communications Magazine
• /
• v.30 no.2
• /
• pp.59-65
• /
• 2013

본고에서는 스마트그리드 사업을 적용하여 현재 세종시 첫마을에 추진하고 있는 스마트그린시티 건설프로젝트 사업에 대하여 다루어 보고자 한다. 행정중심복합도시건설청(행복청) 에서는 2030년까지 세종시의 이산화탄소 70%절감 그리고 세종시의 전체에너지 공급에 약 17% 정도를 그린에너지로 대체를 목표로 하고 있다. 이를 위하여, 우선적으로 행복청은 ICT 기술을 활용한 스마트그리드 기술을 적용하여 에너지 절감 목표를 추진 중에 있다. 행복청은 현재 첫마을 공공 4개 건물을 시범사업으로서 원격통합관리 서비스를 2012년 09월에 구축하기 시작하였으며, 현재에는 이러한 설비들이 모두 구축된 상태이며 에너지 절감방안을 도출 중에 있다. 본고에서는 지금까지 진행되어 온 세종시 첫마을 원격통합관리 서비스에 대하여 알아보고자 한다.

• Annual Conference of KIPS
• /
• 2005.05a
• /
• pp.1335-1338
• /
• 2005

최근에 정부는 IT839 전략을 발표하여 IT 산업의 새로운 서비스 도입과 신규 수요 창출에 역량을 집중하고 있으며, 신규 서비스로서 RFID/USN 도입을 강력히 추진하고 있다. 또한 민간분야에서도 유비쿼터스 환경에서 센서 네트워크를 이용한 여러 가지 연구가 활발히 진행되고 있는데, 이러한 센서 네트워크가 경제적으로 성공하기 위해서는 유지보수 비용절감이 필수적이다. 본 논문에서는 센서 네트워크의 유지보수 비용을 최소화하기 위한 방법으로 온디맨드 패러다임에 의한 에너지 절감 방안을 제시한다. 구체적으로 센서 네트워크의 각 구성요소에 온디맨드 패러다임을 어떻게 적용하여 에너지 절감의 최적화를 이룰수 있는지와 센서 네트워크와 상위 정보네트워크간의 관계를 설명한다.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.36 no.12A
• /
• pp.959-965
• /
• 2011

As the usage of mobile stations increases thanks to various services, power saving mechanisms of mobile station operated by battery power have been gained much attention. This paper presents a power saving mechanism(PSM) of IEEE 802.16m, called Mobile WiMAX, for 4G mobile technology. This paper first presents different points of the PSM of IEEE 802.16m from IEEE 802.16e, which is a basis of IEEE 802.16m. This paper proposes a dynamic sleep cycle adjustment algorithm for improving the performance of IEEE 802.16m PSM by considering the arrival pattern of incoming packets from base station. Performance of the algorithm is analyzed in terms of energy consumption as well as waiting time of packets.

• Korean Journal of Construction Engineering and Management
• /
• v.11 no.4
• /
• pp.32-40
• /
• 2010

Today, more than thiry countries around the world are designated as a mandatory GHG(GreenHouse Gas) emissions country from the UNFCCC(United Nations Framework Convention on Climate Change). Korea is also possible to designate a mandatory GHG emissions country after Second mandatory emissions which will be started in 2013. Accordingly, Korea government has made efforts to reduce GHG and has enforced energy-related policies to deduce building energy. But there is no process such as providing of existing building improvement recommendations or expert verification for building remodeling in Korea energy-related policies compared with policies in other countries. For this reason, improvements of Korea which divided governments and city provinces are suggested. However suggested improvements are directions, so additional research is needed for detail methods.

• The Journal of the Convergence on Culture Technology
• /
• v.9 no.3
• /
• pp.817-823
• /
• 2023

Manufacturing plants face the challenge of reducing energy use in response to climate change. Reducing energy consumption can be seen as one of the most important issues, such as reducing production costs and improving efficiency. Among manufacturing industries, the increase in energy consumption in the food industry is gradually increasing along with the improvement of the standard of living and the increase in population. In order to save energy in food processing plants, it is important to identify and analyze energy consumption characteristics in energy-consuming processes. Prior to this, it is necessary to monitor and analyze existing energy consumption to derive reduction measures. In this study, a small and medium-sized food processing plant producing processed meat products was used as a case study to identify and analyze the energy consumption structure at typical cycle/stage level of the batch heating process. From this, we tried to establish realistic and quantitative goals that can be obtained under individual process operating conditions. The results of this study will be used as basic data for the development of diffusion and pervasive energy saving FEMS technology for common core processes of food factories of small and medium-sized enterprises in the future.

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
• /
• v.35 no.7
• /
• pp.5-10
• /
• 2006

국내 에너지수요관리 현황을 검토하여 에너지공급자 수요관리 투자활성화 및 에너지절감을 위한 사업성과 제고 방안을 검토해보고자 한다.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
• /
• 2009.05a
• /
• pp.400-403
• /
• 2009

최근, LCD(Liquid Crystal Display) 산업에서 클린룸의 규모가 커짐에 따라 Stocker 시스템의 사이즈가 커지고 길이가 장거리화 되고 있다. 이에 제조업체는 생산수율을 높이기 위해 Stocker 시스템의 전체 택타임을 줄이기 위한 방안으로 Stocker 시스템의 속도를 증가시키도록 요구하고 있다. 또한, 제조업체는 고유가 시대에 여러 장비들에 대한 에너지 절약을 통한 공장 운영비용이 최소화되도록 요구하고 있다. 따라서 본 논문은 차세대 Stocker 시스템의 에너지 절감과 이송 속도증가에 따른 비접촉 전원시스템의 최적설계를 제안하고, 에너지 절감을 위한 비접촉 전원시스템의 시제품을 제작하여 부하인 크레인의 여러 운전 패턴에 따른 비접촉 전원시스템의 실증시험과 입/출력 특성, 효율 개선에 따른 비접촉 전원시스템을 개발하여 에너지 절감 효과에 대하여 서술하였다.

• The Magazine for Energy Service Companies
• /
• s.58
• /
• pp.42-45
• /
• 2009

CDM 사업은 ESCO사업에 새로운 기회로 인식돼 왔다. 청정개발체제사업(CDM Clean Development Mechanism) UN에 등록해 탄소배출권을 확보, 세계 각국에 판매하는 소득을 얻을 수 있는 새로운 기회가 ESCO 사업자들에게도 어떤 의미인지 알아보자. 2009ESCO 관리자 교육을 통해 CDM 사업과 연계 방안을 모색했던 서울사업대학교 에너지환경대학원 에너지정책학과 박중구 교수를 만나 현황과 발전 모색에 대해서 들었다.