• Research Article

    A Study on Simulation for Decreasing Energy Demand According to Window-to-Wall Ratio and Installation Blind System in Building

    블라인드 도입과 창면적비에 따른 표준건축물의 에너지 수요 저감에 대한 시뮬레이션 연구

    Kang, Suk-Min, Lee, Tae-Kyu, Kim, Jeong-Uk

    강석민, 이태규, 김정욱

    Building energy demands have highly risen in modern society; thus, It is necessary to reduce building energy demands especially commercial buildings adopting ... + READ MORE
    Building energy demands have highly risen in modern society; thus, It is necessary to reduce building energy demands especially commercial buildings adopting a curtain wall architecture. Curtain wall architectures have a high ratio of windows which is a vulnerable in heat insulations as cladding. In order to complement insulation performance of windows in these buildings, there are various methods adopted often such as installing blinds, wing wall and films. There are two suggestions of this paper. 1) WWR (Window-to-Wall Ratio) makes a impaction of energy demands in buildings. 2) Another one is an efficiency of blind systems which are installed in buildings in order to reduce cooling demands. It is also critical to make fundamental model for low-energy building construction by processing a lot of simulation As a result by this study, 1) an external blind system is more useful for reducing cooling energy demands rather than an internal blind system. 2) Buildings which have a large window require more amount of cooling demands. In case of WWR 45%, it needs more cooling energy rather than WWR 15% model’s 3) Adopting blind system would reduce energy demands. WWR 45% model with external blind systems reduces about 4% of cooling energy demands compared to same model without any blind systems.4) it is necessary to study an efficiency of blind systems combined with renewable energy and it will be possible to reduce more energy demand in building significantly. - COLLAPSE
    December 2018
  • Research Article

    A Study on the Performance Measuring Methods and Standard for the Technical Package in Zero Energy Building

    제로에너지빌딩의 기술 패키지 구성을 위한 성능 기준 및 성능 측정 방법에 관한 연구

    Sung, Uk-Joo, Rim, Min-Yeop, Kim, Seok-Hyun, Cho, Soo

    성욱주, 임민엽, 김석현, 조수

    Zero energy building was attended for energy consumption minimization by the energy saving technology about building heating and cooling energy consumption and ... + READ MORE
    Zero energy building was attended for energy consumption minimization by the energy saving technology about building heating and cooling energy consumption and the renewable energy production facility. So the government has supported the zero energy building supply for decreasing green gas emissions. The study about inventory of zero energy building has many proceeding. That inventory need the information of material and equipment. So information of material and equipment about zero energy building must be included for the zero energy building realization. Actually the database of zero energy building inventory construction through the inventory established studies has difficult because the database need many information. In this study, author proposed the test methods and performance reference for upload at inventory. It was constructed to material – module - package. Also the author analyzed the construction of the technical package for zero energy building. The author separated performance category to the energy performance for energy analysis and other performance for confirmed the durability, stability and etc. This performance category proposed the table. The test methods of material and equipment in the passive package and active package proposed to the international standard and korea standard basically korea standard. Also the performance reference was proposed to korea legal standard and various standard by this study results. And the authors proposed the table of performance value, test methods, performance reference. By result of this study, the test methods and performance reference will be used the basic data for inventory of zero energy building. - COLLAPSE
    December 2018
  • Research Article

    Market Acceptability of the ZEB Certification System for Public Buildings According to the 2025 Roadmap

    2025년 의무화 로드맵에 따른 공공시설 제로에너지건축물 인증제도 시장 수용성

    Lee, Seung-Min, Kim, Jin-Ho, Shin, Gwang-Su, Kim, Eui-Jong

    이승민, 김진호, 신광수, 김의종

    The ZEB certification system has come into effect since 2018 according to the ZEB road map. From 2020, the public buildings with ... + READ MORE
    The ZEB certification system has come into effect since 2018 according to the ZEB road map. From 2020, the public buildings with the total floor area smaller than 3000 ㎡ are the target of the certification, and it will be extended to the buildings with up to 5000 ㎡ floor area in 2025. However, current mandatory regulations for public office buildings seem already to meet the ZEB certification system planned for 2025. In this work, two buildings belong to 3,000~5,000 ㎡ in total floor area were selected to analyze the possibility of meeting the ZEB certification only by following current obligation regulations. Results showed that the test buildings satisfied the minimum building energy efficiency and energy self-sufficiency rates for the ZEB certification when the mandatory insulation and installation ratio of renewable energy are applied. This can be useful for revising the road map or extending the target buildings of the ZEB certification. - COLLAPSE
    December 2018
  • Research Article

    Operation Performance Evaluation on Auxiliary Heating Device to Prevent Condensation adjacent to Built-in Furniture of Apartment Units in Winter

    기존 공동주택 붙박이장에서 겨울철 결로 방지를 위한 보조난방장치 운전 성능 평가

    Lee, Chae-Lyn, Lee, Hyun-Hwa, Lim, Jae-Han, Song, Seung-Yeong

    이채린, 이현화, 임재한, 송승영

    The purpose of this study was to evaluate condensation prevention for condensation vulnerable areas around built-in furniture of apartment buildings by applying ... + READ MORE
    The purpose of this study was to evaluate condensation prevention for condensation vulnerable areas around built-in furniture of apartment buildings by applying auxiliary heating device. Recently, the condensation and mold problems of apartment buildings has been growing due to high insulation and high air-tightness performance for energy saving. Condensation at built-in furniture were generally found in winter at the of furniture’s back panels, adjacent surfaces of wall, floor and ceiling. These problems are related to the weather conditions and indoor room conditions in winter. To solve these problems, auxiliary heating device was developed and could be installed. The aim of paper is to analyze the thermal environment around the built-in furniture which were applied and not applied auxiliary heating device in winter. In results, it was possible to increase the surface temperature of vulnerable areas around built-in furniture by applying auxiliary heating device, and to minimize condensation problems by using the minimum device. - COLLAPSE
    December 2018
  • Research Article

    Anomaly Detection and Diagnostics (ADD) Based on Support Vector Data Description (SVDD) for Energy Consumption in Commercial Building

    SVDD를 활용한 상업용 건물에너지 소비패턴의 이상현상 감지

    Chae, Young-Tae

    채영태

    Anomaly detection on building energy consumption has been regarded as an effective tool to reduce energy saving on building operation and maintenance. ... + READ MORE
    Anomaly detection on building energy consumption has been regarded as an effective tool to reduce energy saving on building operation and maintenance. However, it requires energy model and FDD expert for quantitative model approach or large amount of training data for qualitative/history data approach. Both method needs additional time and labors. This study propose a machine learning and data science approach to define faulty conditions on hourly building energy consumption with reducing data amount and input requirement. It suggests an application of Support Vector Data Description (SVDD) method on training normal condition of hourly building energy consumption incorporated with hourly outdoor air temperature and time integer in a week, 168 data points and identifying hourly abnormal condition in the next day. The result shows the developed model has a better performance when the (probability of error in the training set) is 0.05 and (radius of hyper plane) 0.2. The model accuracy to identify anomaly operation ranges from 70% (10% increase anomaly) to 95% (20% decrease anomaly) for daily total (24 hours) and from 80% (10% decrease anomaly) to 10%(15% increase anomaly) for occupied hours, respectively. - COLLAPSE
    December 2018
  • Research Article

    Issues and Standardization technology in Automatic Extraction to Create an Planar Figure of Envelope based on BIM

    BIM 기반 외피전개도 자동추출의 고려사항 및 표준화 연구

    Park, Young-Joon, Kim, Chang-Min, Park, Byung-Yoon, Choi, Chang-Ho

    박영준, 김창민, 박병윤, 최창호

    The information on the planar figure of the building envelope is commonly required in various criteria related to the energy performance of ... + READ MORE
    The information on the planar figure of the building envelope is commonly required in various criteria related to the energy performance of the building. However, since the method of creating varies depending on each criterion, the information displayed in the planar figure of the building envelope differs considerably according to the person making the figure. In this regard, this study sought to derive the commonly required information for the unification of the information included in the planar figure of the building envelope, and thus examine the standardization of the planar figure of the building envelope based on BIM. Towards this end, 1) the required information about the planar figure of the building envelope was derived through the literature review and case analysis results submitted to the energy performance evaluation agencies, and 2) the standardized output technology using IFC was investigated based on the required information. Therefore, it is expected that the findings of this study will help to create a general-purpose planar figure for the building envelope, and this study can serve as the preliminary research for automatically extracting the information on the planar figure of the building envelope. - COLLAPSE
    December 2018
  • Research Article

    Cooling System Design Factors related to Mechanical Load Component (MLC) in Data Center

    데이터센터 냉방 시스템의 MLC(Mechanical Load Component) 관련 설계인자 도출

    Kim, Ji-Hye

    김지혜

    Increased density of racks has resulted in increased use of data center cooling energy and the needs for energy efficient cooling systems ... + READ MORE
    Increased density of racks has resulted in increased use of data center cooling energy and the needs for energy efficient cooling systems has increased. In response to these needs, ASHRAE presented a performance indicator, which is Mechanical Load Component (MLC), for the purpose of evaluating systems at the design stage. However, the MLC metrics presented in the current standard can only be determined for system compliance and compared alternative systems with the system configuration completed. Therefore, there are limitations to considering MLC from the early stages of design. In this study, to extend the scope of application of MLC in the design phase, the design factors of the main equipment comprising the cooling system are classified by the MLC load component and interrelations between design factors were identified. - COLLAPSE
    December 2018
  • Research Article

    A Fundamental Study on the Composition for the Hybrid Dehumidification System Using Thermoelectric Device

    열전소자를 활용한 하이브리드 제습시스템의 구성에 관한 기초적 연구

    Ryu, Seong-Ryong, Yeom, Ho-Jin, Lee, Hyun-Jae, Cho, Hyun

    류성룡, 염호진, 이현제, 조현

    In this paper, the hybrid dehumidification system using thermoelectric device is based on the idea of utilizing waste heat from the heat ... + READ MORE
    In this paper, the hybrid dehumidification system using thermoelectric device is based on the idea of utilizing waste heat from the heat dissipation side of thermoelectric device as a heat source to regenerate chemical desiccant. We would like to apply this system to spaces required dehumidification due to continuous moisture generation or local high humidity in the houses. And, we want to confirm the possibility of developing the hybrid dehumidification system that combines passive dehumidification using chemical desiccant with active dehumidification using thermoelectric device. - COLLAPSE
    December 2018
  • Research Article

    Performance Analysis of Electricity Demand Forecasting by Detail Level of Building Energy Models Based on the Measured Submetering Electricity Data

    서브미터링 전력데이터 기반 건물에너지모델의 입력수준별 전력수요 예측 성능분석

    Shin, Sang-Yong, Seo, Dong-Hyun

    신상용, 서동현

    Submetering electricity consumption data enables more detail input of end use components, such as lighting, plug, HVAC, and occupancy in building energy ... + READ MORE
    Submetering electricity consumption data enables more detail input of end use components, such as lighting, plug, HVAC, and occupancy in building energy modeling. However, such an modeling efforts and results are rarely tried and published in terms of the estimation accuracy of electricity demand. In this research, actual submetering data obtained from a university building is analyzed and provided for building energy modeling practice. As alternative modeling cases, conventional modeling method (Case-1), using reference schedule per building usage, and main metering data based modeling method (Case-2) are established. Detail efforts are added to derive prototypical schedules from the metered data by introducing variability index. The simulation results revealed that Case-1 showed the largest error as we can expect. And Case-2 showed comparative error relative to Case-3 in terms of total electricity estimation. But Case-2 showed about two times larger error in CV (RMSE) in lighting energy demand due to lack of End Use consumption information. - COLLAPSE
    December 2018
  • Research Article

    Evaluation of Elevator Noise level of Apartment Houses through Vibration Measurement

    진동측정을 통한 공동주택 엘리베이터 소음 레벨 평가

    Kang, Min-Woo, Song, Min-Jeong, Oh, Yang-Ki

    강민우, 송민정, 오양기

    Elevator noise in apartment houses is one of the factors which prevent the residents from quiet and comfortable life. The elevator noise ... + READ MORE
    Elevator noise in apartment houses is one of the factors which prevent the residents from quiet and comfortable life. The elevator noise measurement method [KS F ISO 16032] is introduced from the matching ISO standard, however, it has problems in the application to the actual measurement. To visualize the problems, measurements in an apartment house are conducted, which has been suffering from the elevator noise for a long time. The measurement itself is extremely difficult due to the low sound pressure level of elevator, which is lower than 35 dB (A), and the even higher background noise level. However the vibration levels measured at the same time are relatively less disturbing As a result of vibration measurement, it was found that the vibration is clearly measured on the wall, and presents a high correlation coefficient of over 0.8 with the noise levels measured This shows that the vibration level measured on the elevator walls may be rather reliable numbers than the elevator noise levels in the actual noisy condition of elevator halls and the vicinity. - COLLAPSE
    December 2018
  • Research Article

    Analysis of Scoring Status and Adoption Characteristics by Evaluation Items based on LEED Canada Certified Cases

    LEED Canada 인증건축물의 평가항목별 득점현황과 적용특성 분석

    Choi, Dong-Ho

    최동호

    This paper analyzes the applicability and technology level of the green building element technology by analyzing the scorecard of the LEED Canada ... + READ MORE
    This paper analyzes the applicability and technology level of the green building element technology by analyzing the scorecard of the LEED Canada certified buildings. The results of this analysis will be able to evaluate the current status and level of application of green building element technology, and it will be used as a basic data to prepare for the revision of the certification standards and the establishment of strategies for the future green building activation. In this study, 1,010 LEED Canada certified buildings from 2011 to 2016 were analyzed. The results were analyzed by focusing on the status of greening by certification category and the characteristics of adoption by sub-category. The results of the study are summarized as follows. ① EA category showed the biggest difference between the certification scores and the adoption rates than other categories, and it was confirmed that it is not easy category from the viewpoint of practical adoption. On the other hand, the ID (Innovation & Design Process) and WE were analyzed to be relatively easy to apply, with a score of over 72%. ② In the case of Platinum class, the upper adoption rate is shown in all categories except MR. The Gold class shows the adoption rate of WE and ID in the top, and the middle rate in most categories. Silver grades showed lower rates in the three categories except WE, ID and EQ. Certified grades showed the adoption rates of the bottom except the two categories. - COLLAPSE
    December 2018
  • Research Article

    An Operation Status Analysis of Library Building using BEMS Data; Energy Performance Evaluation on Initial Stage of Completion

    BEMS 데이터를 활용한 도서관 건물의 운전현황 분석 -준공 초기단계의 건물 에너지 성능 평가-

    Park, Seong-cheol, Ha, Ju-wan, Kim, Hwan-yong, Song, Young-hak

    박성철, 하주완, 김환용, 송영학

    Energy consumption savings in buildings should be reviewed in diverse areas such as air conditioning system and lighting responsible for cooling and ... + READ MORE
    Energy consumption savings in buildings should be reviewed in diverse areas such as air conditioning system and lighting responsible for cooling and heating, and energy management systems such as BAS (Building Automation System) and BEMS (Building Energy Management System) are introduced to improve energy consumption efficiency and to promote economic control of related facilities by integrated management of energy generated and consumption in buildings. The measured building of this study uses regenerative geothermal system. Measured values of heat pump and system COP were 4.7 and 4.2 respectively, and they were found to be higher 11.9% and 23.5% than rated values. As a result of analyzing the air conditioning and lighting energy from the first floor to the fourth floor performing the air conditioning, the second and third floors, which have a high frequency of use, are compared with the first and fourth floors 50% higher energy consumption ratio. On the other hand, the general heat storage system uses the nighttime power of the previous day to store heat and use it the next day. The total number of days of abnormal operation during the summer season is 61 days. The electricity cost corresponding to the abnormal operation is 1,840,641 KRW, and the normal operation using the nighttime power is 1,363,561 KRW, which is difference of 477,080 KRW, 35% increase in cost. We will utilize it as the main data of BEMS through analysis of winter operation characteristics as well as summer operation characteristics. - COLLAPSE
    December 2018
Journal Informaiton Agriculture and Life Sciences Research Institute Journal of Korean Institute of Architectural Sustainable Environment and Building Systems
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