• Title/Summary/Keyword: Building Energy Management System

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Optimization of the Community Energy Supply System for D-Cube City, Multi Purpose Building (복합건물(D-Cube City) 지역에너지 공급체계 최적화)

  • Lee, Tae-Won;Kim, Yong-Ki;Lee, Kun-Woo;Lee, Ki-Bong;Cho, Dong-Ho
    • 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.

Reinforcement Learning Based Energy Control Method for Smart Energy Buildings Integrated with V2G Station (강화학습 기반 V2G Station 연계형 스마트 에너지 빌딩 전력 제어 기법)

  • Seok-Min Choi;Sun-Yong Kim
    • The Journal of the Korea institute of electronic communication sciences
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    • v.19 no.3
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    • pp.515-522
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    • 2024
  • Energy consumption is steadily increasing, and buildings in particular account for more than 20% of the total energy consumption around the world. As an effort to cost-effectively manage the energy consumption of buildings, many research groups have recently focused on Smart Building Energy Management Systems (BEMS), which are deepening the research depth by applying artificial intelligence(AI). In this paper, we propose a reinforcement learning-based energy control method for smart energy buildings integrated with V2G station, which aims to reduce the total energy cost of the building. The results of performance evaluation based on the energy consumption data measured in the real-world building shows that the proposed method can gradually reduce the total energy costs of the building as the learning process progresses.

Questionnaire survey & Evaluation for Quality Level of Energy Management System in Buildings - survey for maintenance personnel - (건물 에너지관리 실태 및 수준 평가 - 유지관리자를 대상으로 -)

  • Kwak, Ro-Yeul;Cho, Seung-Hyuk;Kwon, Han-Sol;Huh, Jung-Ho
    • 한국태양에너지학회:학술대회논문집
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    • 2008.11a
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    • pp.112-119
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    • 2008
  • In order to ensure building energy management at an appropriate level continuously, it is necessary to define clearly service work of energy management and to suggest evaluation index whether energy management in buildings is fit and improvement is needed or not. But, evaluation index of energy management level in buildings is not suggested yet in Korea. So, the purpose of this paper is to suggest evaluation index of energy management level in buildings, investigate the present state of Korean buildings and evaluate energy management levels. As a result of surveys of evaluation index of energy management, it is found that portion of level 1, which is the best level, is higher than any other level, level 2, level 3. And, throughout analysis, it is found that as total floor area is larger, evaluation index of energy management level is better, and, in order to increase energy management level, first of all, there is necessary for building's users to change understanding about energy saving and make a reform of national policy of energy management in buildings. Because there is rich relationship between items among evaluation index of this stuff and result value of evaluation index, evaluation index of energy management suggested in this study is available to evaluate energy management level in buildings.

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Study of Design for the Building Energy Management System (건물 에너지 관리시스템 설계에 관한 연구)

  • Kim, Jung-Hee;Kim, Woosaeng
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2013.05a
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    • pp.717-719
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    • 2013
  • Building Energy Management System application not only helps maintain internal environment comfortable, but also maximizes energy efficiency and extends an expected life of facility system. Due to generalized computer usage, development of communication system, and bigger and more complex of building in 1990s, automation and comprehensive management system were acknowledged to be important; and these have been widely applied in domestic market. This paper study the design of the BEMS project.

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A Framework of Building Knowledge Representation for Sustainability Rating in BIM

  • Shahaboddin Hashemi Toroghi;Tang-Hung. Nguyen;Jin-Lee. Kim
    • International conference on construction engineering and project management
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    • 2013.01a
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    • pp.437-443
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    • 2013
  • Recently, sustainable building design, a growing field within architectural design, has been emerged in the construction industry as the practice of designing, constructing, and operating facilities in such a manner that their environmental impact, which has become a great concern of construction professionals, can be minimized. A number of different green rating systems have been developed to help assess that a building project is designed and built using strategies intended to minimize or eliminate its impact on the environment. In the United States, the widely accepted national standards for sustainable building design are known as the LEED (Leadership in Energy and Environmental Design) Green Building Rating System. The assessment of sustainability using the LEED green rating system is a challenging and time-consuming work due to its complicated process. In effect, the LEED green rating system awards points for satisfying specified green building criteria into five major categories: sustainable sites, water efficiency, energy and atmosphere, materials and resources, and indoor environmental quality; and sustainability of a project is rated by accumulating scores (100 points maximum) from these five major categories. The sustainability rating process could be accelerated and facilitated by using computer technology such as BIM (Building Information Modeling), an innovative new approach to building design, engineering, and construction management that has been widely used in the construction industry. BIM is defined as a model-based technology linked with a database of project information, which can be accessed, manipulated, and retrieved for construction estimating, scheduling, project management, as well as sustainability rating. This paper will present a framework representing the building knowledge contained in the LEED green building criteria. The proposed building knowledge framework will be implemented into a BIM platform (e.g. Autodesk Revit Architecture) in which sustainability rating of a building design can be automatically performed. The development of the automated sustainability rating system and the results of its implementation will be discussed.

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A Study on the Perfomance Analysis of Low Energy Cooling Systems in Office building (사무소건물의 에너지절약형 냉방시스템 성능분석에 관한 연구)

  • Park, Chang-Bong;Rhee, Eon-Gu
    • Journal of the Korean Solar Energy Society
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    • v.30 no.6
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    • pp.89-94
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    • 2010
  • A large portion of the energy cost of a building is cooling and heating to maintain a comfortable indoor environment. Air conditioning is now one of the important parts in the building design, as increase in energy consumption and pollutant emission in energy conversion process. In this study, elements that affects the energy consumption of model building are identified and the perfomance analysis of the alternative a Low Energy Cooling Systems considering characteristics of model building and energy saving performance is analyzed. In this study, elements that affect the energy consumption of office building are identified and energy saving performance of the alternative air conditioning system is analyzed. As a result, applied to earn and suggest basic data for energy saving measures. In this study, EnergyPlus simulation program was used to evaluate the energy load when alternative Low Energy Cooling Systems are applied to the model building. The reliability of simulation program is verified by comparing actual energy load from operation data of building management office and predicted energy load using simulation program. For Low Energy Cooling System application which considers the purpose and characteristics of the building, reasonable and energy-saving air conditioning method obtained by analyzing energy consumption elements for each expected air conditioning methods is used to deduct result of this study.

Case Study for Energy Conservation Measures of Hospital Buildings Using the Analysis of Energy Consumption Structure (의료시설 에너지절약 운영방법 도출을 위한 사례분석을 통한 에너지 영향요소 분석)

  • Lee, Sangmoon;Cho, Jinkyun
    • Journal of the Korean Solar Energy Society
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    • v.39 no.2
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    • pp.57-69
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    • 2019
  • Because the hospital building operates 24 hours a day, 365 days a year for treatment and restoration of patients, it has a different pattern of energy use than that of ordinary buildings. Hospitals contribute to energy consumption and have a negative environmental impact. This study aims to find how meaningful energy performance, reflecting good energy management and ECMs, can be operated for hospital buildings, a category encompassing complex buildings with different systems and large differences between them. In this study, we proposed the energy diagnosis & evaluation method and energy management process to verify energy saving through operation data based on system & facility characteristics, operation pattern and energy consumption characteristics of hospital building. Energy consumption structures were surveyed throughout 4 reference hospital in Seoul, Korea. Findings confirm that different hospital departments have hugely different energy-demand profiles. Energy efficiency and energy saving potentials are presented. The energy performance analysis can be applied to a wide range of problems in energy-system operation.

Development of Multi-purpose Smart Sensor Using Presence Sensor (재실 감지 센서를 이용한 다용도 스마트 센서 개발)

  • Cha, Joo-Heon;Yong, Heong
    • Journal of the Korean Society of Manufacturing Technology Engineers
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    • v.24 no.1
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    • pp.103-109
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    • 2015
  • This paper introduces a multi-purpose smart fusion sensor. Normally, this type of sensor can contribute to energy savings specifically related to lighting and heating/air conditioning systems by detecting individuals in an office building. If a fire occurs, the sensor can provide information regarding the presence and location of residents in the building to a management center. The system consists of four sensors: a thermopile sensor for detecting heat energy, an ultrasonic sensor for measuring the distance of objects from the sensor, a fire detection sensor, and a passive infrared sensor for detecting temperature change. The system has a wireless communication module to provide the management center with control information for lighting and heating/air conditioning systems. We have also demonstrated the usefulness of the proposed system by applying it to a real environment.

A METHOD FOR PREDICTING THE ENERGY CONSUMPTION OF A BUILDING IN EARLY STAGE OF DESIGN

  • Ji-Yeon Seo;Su-Kyung Cho;Yeon-Woong Jung;Hyung-Jin Kim;Jae Ho, Cho;Jae-Youl Chun
    • International conference on construction engineering and project management
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    • 2013.01a
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    • pp.304-307
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    • 2013
  • Various programs have been developed to predict the energy consumption of a building as a result of recent increased social interest in the environmental friendliness of construction as measured by energy efficiency. The goal of environmental-friendliness, which is achieved by predicting the energy consumption of a building, can be realized in the design stage by applying a variety of technologies, planning factors and planning systems. However, most energy analyzing engines are only suitable for use in the advanced stages of design because of the large amount of design information that must be entered. Thus, because the simulation programs currently used are not suitable for use in the early stages of design, this study suggests a prediction logic that provides an overview of the energy consumption of a building according to its size, scope, and purpose by analyzing statistics collected by government agencies.

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Stepwise Technique for Improving Building Energy Efficiency Rating Utilizing Quantified Simulation Model (정량화 시뮬레이션 모델을 활용한 단계적인 건축물에너지효율등급 향상 방안)

  • Kim, Gi-Seok;Kim, You-Min;Kim, Jong-Seung;Oh, Se-Gyu
    • KIEAE Journal
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    • v.14 no.6
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    • pp.65-73
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    • 2014
  • Due to the Climate change and resource shortage by global warming, various problems are rising and getting worse around the world. Many countries are doing the considerable efforts to reduce greenhouse gas emissions. The government of South Korea also plans to decrease greenhouse gas emission, the various pilot projects are underway, which includes obligation of energy efficiency 1st rating and greenhouse gas target management system of public buildings. In particular, luxurious government office buildings and energy-wasting public building have issued and emerged as a social problem. Energy efficiency improvement of the existing public office buildings are becoming an important issue recently. This study is proposed the step-by-step energy improvement model according to the building energy efficiency rate in order to reduce the energy consumption. To attain this end, I set up a base model by analyzing the current architectural conditions of the existing public office buildings and grasped the specific properties of building energy consumption through energy simulations. Furthermore, I suggested phased reduction prototypes for the reduction target of energy consumption by applying the methods of the zero energy building plan. This study is expecting that prototypes would give directions when it comes to planning the implementation policy of phased building plan factors, according the building energy consumption reduction goal in the existing public office buildings which are the subject of building energy target management system.