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Research Article
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Examining the Influencing Factors of Base and Heating Energy Use Intensities for the Energy Benchmarking of School Buildings
교육시설 에너지 벤치마킹을 위한 연간 기저 및 난방 에너지 영향 인자 분석
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Kim, Han-Joo, Joo, Hyung-Bin, Kim, Deuk-Woo, Heo, Yeon-Sook
김한주, 주형빈, 김덕우, 허연숙
- Identifying the significant influencing factors on energy use intensity per energy end-use is necessary for benchmarking building energy performance per end-use. This …
- Identifying the significant influencing factors on energy use intensity per energy end-use is necessary for benchmarking building energy performance per end-use. This study considered ten potential influencing factors related to building operation, thermal characteristics, building shape, and mechanical systems and evaluated their effect through 97 school buildings located in Seoul. Random forest regression models with these factors were developed for base and heating energy use intensities (EUI), which yielded 0.49 and 0.68 of R2, respectively. Through the Shapley additive explanations (SHAP) method, gas consumption ratio, swimming pool, and total occupancy were identified as major factors in estimating the base EUI, while gas usage ratio, swimming pool, and envelope area per unit air-conditioning area were identified in heating EUI estimation. - COLLAPSE
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Examining the Influencing Factors of Base and Heating Energy Use Intensities for the Energy Benchmarking of School Buildings
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Research Article
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Analysis of Indoor and Outdoor Noise Environments in One-room Type Multi-family Housing Focused on the University Town
대학가 주변 원룸형 다가구주택의 실내외소음 환경 분석
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Jang, Ha-Eun, Lee, Jeong-Hun
장하은, 이정훈
- This study investigates residential satisfaction with the noise environment in One-room type multi-family housing around Chungnam National University and measures indoor and …
- This study investigates residential satisfaction with the noise environment in One-room type multi-family housing around Chungnam National University and measures indoor and outdoor noise levels in 10 households at different times of the day. A significant number of residents negatively evaluated the noise environment, with discomfort particularly stemming from noise intrusion from outside. The average indoor noise level was found to be 34.4 dB(A), with a standard deviation of 1.86, while the average outdoor noise level was 56.0 dB(A), with a standard deviation of 5.12. While outdoor noise levels were similar across houses, indoor noise levels varied depending on the house. When applying domestic and international standards to the measurement results, the majority of the houses exceeded the noise regulations for both day and night. This highlights the poor noise environment in studio-type multi-family housing near university areas and suggests the need for improving regulatory standards and introducing more detailed criteria. - COLLAPSE
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Analysis of Indoor and Outdoor Noise Environments in One-room Type Multi-family Housing Focused on the University Town
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Research Article
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Evaluation Framework for Solar DC Electrification Systems for Sustainable Energy Independence of Vulnerable Groups
취약계층의 지속가능한 에너지 자립을 위한 태양광 DC 전기화 시스템 평가 프레임워크 도출
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Kim, Eun-Young, Kim, Yong-Ki, Baek, Cheong-Hoon
김은영, 김용기, 백정훈
- This study aims to develop a framework to systematically evaluate the efficiency and economic feasibility of energy-independent solar direct current (DC) electrification …
- This study aims to develop a framework to systematically evaluate the efficiency and economic feasibility of energy-independent solar direct current (DC) electrification systems for energy- poor households. To verify the energy efficiency and cost-saving potential of DC systems compared to traditional alternating current (AC) systems, an analytical framework was constructed based on empirical data. The results indicate that DC systems show significant potential in reducing energy consumption and enhancing cost efficiency. The established framework can serve as a foundation for future data collection and comparative studies through additional experiments. This research provides essential insights for improving energy welfare for vulnerable groups and advancing sustainable energy solutions. - COLLAPSE
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Evaluation Framework for Solar DC Electrification Systems for Sustainable Energy Independence of Vulnerable Groups
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Research Article
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Development of a Prefabricated BIPV Unit Roof System to Enhance Constructability
시공성 향상을 위한 프리패브 BIPV 유닛 지붕시스템 개발
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Baek, Cheong-Hoon, Kim, Eun-Young, Kim, Yong-Ki
백정훈, 김은영, 김용기
- This study presents the development of a prefabricated Building-Integrated Photovoltaic (BIPV) unit system aimed at significantly enhancing constructability in solar-integrated building applications. …
- This study presents the development of a prefabricated Building-Integrated Photovoltaic (BIPV) unit system aimed at significantly enhancing constructability in solar-integrated building applications. Traditional BIPV systems often face challenges due to complex installation processes, extended construction timelines, and high maintenance requirements. To address these issues, this research proposes a prefabricated BIPV unit system, designed for pre-assembly in a factory setting and simplified on-site installation. Through a combination of alternative design reviews and expert consultations, optimal design solutions were identified and implemented in prototype units. These prototypes were tested for installation speed, structural stability, and energy efficiency, demonstrating that the prefabricated system could drastically reduce installation time and improve reliability. Key considerations for further development of prefabricated BIPV systems include ensuring modularity for easy replacement of solar modules, establishing robust connections between BIPV units and roofing structures, and optimizing insulation to prevent thermal bridging and condensation. Additionally, comprehensive testing of fire resistance, waterproofing, and thermal performance is necessary to validate the system’s resilience. Finally, an integrated economic analysis encompassing factory production and on-site installation should be conducted to evaluate the cost-effectiveness of the prefabricated approach. This study provides foundational insights into the prefabricated BIPV system’s potential for supporting energy self-sufficiency and sustainable building practices. - COLLAPSE
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Development of a Prefabricated BIPV Unit Roof System to Enhance Constructability
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Research Article
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A Study on the Quantification of Energy Saving Effects in Water-side Economizer Systems
외기냉수냉방 시스템의 에너지 절감 효과 정량화에 대한 연구
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Kim, Se-Hyeon, Lee, Je-Hyeon, Kim, Dong-Gyu
김세현, 이제헌, 김동규
- The Water-side Economizer system (WSE) is mainly applied to buildings that generate annual cooling loads, and it is a method to save …
- The Water-side Economizer system (WSE) is mainly applied to buildings that generate annual cooling loads, and it is a method to save energy by producing chilled water using the low outdoor temperature in winter and mid-season and reducing the operation time of the chiller. Although many previous studies have been conducted, there are few cases on the verification and quantification of the effectiveness of the WSE system using actual operation data. Therefore, in this study, we introduced WSE system to the heat source system of a special laboratory located in Suwon that generates annual cooling loads, and the effectiveness verification by using actual operation data and quantify the effectiveness by simulation of the WSE system. To verify the energy saving effect of WSE system, the operation data before and after the use of the WSE system and the power consumption data stored in the Building Automation System (BAS) were compared, as a result of the verification, the power consumption of the target heat source system was reduced by 42% when the WSE system was operated compared to Chiller cooling system operated. And a physics-based simulation for the target heat source was developed and calibrated using actual operation data to improve accuracy. To quantify the annual energy saving effect of the WSE system, the average saving effect of WSE system operation according to outdoor conditions for the past five years was calculated using the calibrated simulation model. As a result, it was analyzed that the heat source system power consumption could be reduced by 52.8% through WSE system. - COLLAPSE
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A Study on the Quantification of Energy Saving Effects in Water-side Economizer Systems
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Research Article
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Energy Performance Analysis of Green Remodeling for Public Buildings (Public Health Center)
공공건축물(보건소) 대상으로 한 그린리모델링 적용 건축물의 에너지 성능 분석
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Lee, Sang-Yeob, Yang, Jae-Kwang
이상엽, 양재광
- A roadmap for mandatory Green-Remodeling will be announced in the future, and the area of buildings, selection criteria will need to be …
- A roadmap for mandatory Green-Remodeling will be announced in the future, and the area of buildings, selection criteria will need to be discussed continuously. It is expected that related standards and methods will proceed through legislation. In the continuous development stage of the Green-remodeling project, this paper compared the results according to the Green-remodeling energy performance evaluation tool. ECO2 and ECO2-OD simulations, which apply the monthly calculation method based on ISO13790 and DIN V 18599, have advantages of fast calculation and intuitive understanding. However, as a tool developed to evaluate the performance of new buildings, it has the disadvantage that it can not reflect the main input variables of the existing buildings, such as the aging of existing buildings or the infiltration rate and schedule that reflect the usage characteristics of the buildings in actual use. In other words, it was found that the simulation tool suitable for new buildings was not suitable for evaluation of existing buildings. An energy simulation suitable for existing buildings will be developed and accurate and quantified evaluation will be conducted. In addition, it is thought that the Green-Remodeling rating system will be possible only when an energy simulation suitable for the existing building is developed. - COLLAPSE
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Energy Performance Analysis of Green Remodeling for Public Buildings (Public Health Center)
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Research Article
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DataNet: A Framework for Linking Nationwide Building Energy Datasets to Support Effective Performance Analysis
데이터넷: 건물부문 탄소중립 가속화를 위한 건물 에너지 및 영향인자 정보의 통합관리 기반 구축
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Shin, Hye-Ry, Kim, Hye-Gi, Kim, Deuk-Woo
신혜리, 김혜기, 김덕우
- This paper introduces DataNet project, which aims to gather and link multi-faceted building energy datasets nationwide in South Korea. The project has …
- This paper introduces DataNet project, which aims to gather and link multi-faceted building energy datasets nationwide in South Korea. The project has two main goals: (1) to establish a national data framework for accelerating carbon neutrality in the building sector, and (2) to support more effective performance analysis based on evidence. Recently, several administrative registration datasets—such as building registries, monthly energy billing information, building footprint polygons, business registration data, ministry-maintained facilities data, and weather data—have become public or partially accessible. However, these datasets are completely fragmented from the perspective of building analysis because they are by-products of administrative processes that were not designed to be linked. In this project, each building register serves as a reference point, and the others are linked at the national level using addresses and associated information, such as building or business names. Currently, we have collected 13 out of 17 datasets, which are in the process of being linked. This paper briefly presents the overall framework, data categories, resolution, and linkage approach. This paper also addresses the challenges encountered during the data linkage process and discusses future applications of urban simulation and evidence-based performance (gap) analysis that may benefit from these multi-faceted datasets. - COLLAPSE
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DataNet: A Framework for Linking Nationwide Building Energy Datasets to Support Effective Performance Analysis
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Research Article
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Evaluation of Carbon Reduction and Utilization Possibility as Building Exterior Material through Reforestation Scenario of Domestic Timber
국산재의 재조림 시나리오를 통한 탄소 저감 및 건축 외장재로서의 활용 가능성 평가
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Jeong, Hyeon-Woo, Park, Hae-Deun, Chang, Seong-Jin
정현우, 박해든, 장성진
- This study investigates the utilization of domestic tree species in Korea to advance carbon reduction goals and promote sustainable construction practices. The …
- This study investigates the utilization of domestic tree species in Korea to advance carbon reduction goals and promote sustainable construction practices. The research focuses on representative hardwood and softwood species commonly found in Korean forests, evaluating their suitability for reforestation and application as exterior materials. Main criteria include Site Index, carbon sequestration capacity, and material performance characteristics such as density, and resistance to environmental conditions. Reforestation strategies were developed for forests in Daejeon and Gyeryongsan, regions actively implementing wood-friendly city project. Through scenario-based analysis, the study explores how reforestation can enhance timber production and carbon absorption while aligning with local ecological conditions. The results indicate significant increases in timber yield and carbon storage potential, with Mongolian Oak emerging as a highly adaptable species for exterior applications due to its favorable physical properties and environmental performance. The findings emphasize the dual benefits of integrating reforestation with sustainable material production, demonstrating up to a 278.94% improvement in exterior material production and an increase in carbon absorption rates to 8.56 tCO2/ha/year in the Daejeon region. The study also underscores the economic viability of reducing reliance on imported timber by leveraging local resources. By providing a comprehensive framework for assessing and optimizing timber utilization, this research contributes to carbon neutrality initiatives, eco-friendly building material development, and sustainable forestry management practices in Korea. - COLLAPSE
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Evaluation of Carbon Reduction and Utilization Possibility as Building Exterior Material through Reforestation Scenario of Domestic Timber
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Research Article
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A Study on the Evolution of Bathroom Interiors
욕실 인테리어의 변천에 관한 연구
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Kim, Sa-Ick
김사익
- The evolution of bathroom interiors mirrors changes in residential culture and societal shifts, adapting to users’ diverse needs. Initially, bathrooms were basic …
- The evolution of bathroom interiors mirrors changes in residential culture and societal shifts, adapting to users’ diverse needs. Initially, bathrooms were basic facilities often located outside or minimally equipped. By the mid-20th century, the importance of hygiene brought them indoors with tiles, bathtubs, sinks, and toilets. After 1980, bathrooms became spaces for comfort and relaxation, incorporating larger bathtubs, spa features, and luxurious finishes. In the 21st century, they have become key design elements, embracing minimalism, nature-inspired designs, and smart technology. Recently, environmental concerns have led to designs prioritizing energy efficiency and water conservation, emphasizing sustainable and personalized bathroom designs. Historically, bathroom culture has varied significantly, from ancient Greek chamber pots to Rome’s sophisticated facilities. In Korea, bathrooms have transitioned from neglected outhouses to essential, multifunctional spaces. Rapid urbanization and economic growth have elevated their status, influencing design and functionality. Currently, bathrooms are equated with living spaces, using high-end materials and unique designs. As single-person households and nuclear families increase, bathrooms now align with open space and wellness trends. This study explores the historical evolution, contemporary trends, and future expectations of modern bathrooms as personal, sensory spaces. - COLLAPSE
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A Study on the Evolution of Bathroom Interiors
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Research Article
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Analysis of Regional Impacts of Climate Change Scenarios on Heating and Cooling Loads in Office Buildings
지역별 기후변화 시나리오 영향에 따른 사무소 건물의 냉·난방부하에 미치는 영향 분석
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Chung, Sung-Hoon, Chung, Woong-June
정성훈, 정웅준
- Global warming has heightened the need for carbon neutrality, with the building sector, accounting for 30% of global energy consumption and 26% …
- Global warming has heightened the need for carbon neutrality, with the building sector, accounting for 30% of global energy consumption and 26% of carbon emissions, playing a pivotal role. This study analyzes the impacts of climate change on heating and cooling loads using SRES A2 and SSP5-8.5 scenarios for Seoul (Cwa) and Ulsan (Cfa) in 2050 and 2080. Future weather files were generated using CCWorldWeatherGen and Future Weather Generator with the Morphing technique, and simulations were conducted on reference building proposed by Department of Energy using EnergyPlus. Results demonstrate that SSP5-8.5 led to higher increases in outdoor temperature and humidity compared to SRES A2, causing greater cooling load increases (up to 51.32% in Seoul and 52.36% in Ulsan by 2080) and heating load reductions (33.12% in Seoul and 30.56% in Ulsan). Regional differences revealed that Ulsan experienced more significant load changes due to higher humidity and coastal climate characteristics. This study highlights the importance of region-specific energy strategies and climate adaptation measures, especially in coastal areas where cooling energy demand is projected to rise. The findings provide a basis for developing sustainable building designs and policies to mitigate climate impacts and achieve carbon neutrality. - COLLAPSE
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Analysis of Regional Impacts of Climate Change Scenarios on Heating and Cooling Loads in Office Buildings
Journal Informaiton
Journal of Korean Institute of Architectural Sustainable Environment and Building Systems
Journal of Korean Institute of Architectural Sustainable Environment and Building Systems
Korean Institute of Architectural Sustainable Environment and Building Systems
한국건축친환경설비학회
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Tel: +82-2-552-0412 / Fax: +82-2-552-8012 / E-mail: kiaebs@kiaebs.org Copyright© Korean Institute of Architectural Sustainable Environment and Building Systems. Powered by APUB
Tel: +82-2-552-0412 / Fax: +82-2-552-8012 / E-mail: kiaebs@kiaebs.org Copyright© Korean Institute of Architectural Sustainable Environment and Building Systems. Powered by APUB