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전현석(Hyun-Seok Jeon),최현중(Hyoun-Jung Choi),최경석(Gyoung-Seok Choi),강재식(Jae-Sik Kang),이승언(Seung-Eon Lee) 대한설비공학회 2009 대한설비공학회 학술발표대회논문집 Vol.2009 No.-
Recently, some major environmental problems are the increase of fossil fuel price and CO₂ emission. To solve these problems, it is imperative to develop eco-friendly techniques and to reduce energy consumption in apartment complexes. Therefore, an effective system for insulation needs to be developed to reduce energy consumption. This study compares thermal characteristics between general insulation and super insulation Vacuum Panel, which is thinner and has more insulation efficiency.
전현석(Hyun-Seok Jeon),최현중(Hyoun-Jung Choi),최경석(Gyoung-Seok Choi),강재식(Jae-Sik Kang),이승언(Seung-Eon Lee),정광섭(Gwang-Seop Jeong) 대한설비공학회 2009 대한설비공학회 학술발표대회논문집 Vol.2009 No.-
Elastomeric Flexible Cellular Insulation is widely used in construction fields to prevent condensation and frozen pipes, reduce energy, and improve insulation. However, when Elastomeric Flexible Cellular Insulation has been installed in buildings in Korea, there was no standardization, which resulted in heat loss Therefore, insulation design standards need to be developed and from these standards, pipe insulation should be improved to increase its efficiency. This study estimates temperature and surface-emissivity according to the thickness of insulation to evaluate thermal performance
건축용 단열재의 장기 경년변화에 따른 건물의 에너지부하 변화 분석
이정훈(Jeong Hoon Lee),윤성훈(Seong Hoon Yoon),강재식(Jae Sik Kang),최경석(Gyoung Seok Choi),최현중(Hyoun Jung Choi) 대한설비공학회 2017 대한설비공학회 학술발표대회논문집 Vol.2017 No.6
This study is to analyze the energy load changes of buildings when insulation performance degrades due to long-term aigng of building insulation. Energy simulation program was TRNSYS 17 performed. Simulation analysis conditions are regional comparison and thermal conductivity performance variation. The thermal conductivity in insulation materials of 35% degradation to long-term aiging about 15 years. The model shape was constructed of floor area(250m<SUP>2</SUP>), height(2.7m) and window area is south window(20.8m<SUP>2</SUP>), north window(7.4m<SUP>2</SUP>) selected as the top side wall generation. As a result, The average U-value of the building envelope increased by 0.11 W/(m<SUP>2</SUP>․K). The energy load due to long-term aiging of the insulation increased in heating energy 12.7~16.9 kWh/(m<SUP>2</SUP>.year) and changed cooling energy -0.7~0.8 kWh/(m<SUP>2</SUP>.year). The by regional energy requirement changes are 16.1 kWh/(m<SUP>2</SUP>.year) in the central region, and 16.9 kWh/(m<SUP>2</SUP>.year) in the southern region, and 13.6 kWh/(m<SUP>2</SUP>.year) in the jeju region. analyze the energy load pattern through simulation of the model various factors by considering variables and factors.
건축 단열재의 장기 경년변화에 따른 열전도율 변화에 관한 실험 연구 Ⅱ
최현중,정영선,김경우,강재식,이승언 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1
The objective of this study is to test for thermal conductivity of architecture insulation materials in domestic buildings with environmental condition change. In study, we measured change of thermal conductivity with test temperature change, long-time leaving and change of contained water rate. For long-time leaving test, the specimens of building insulation materials were kept in test conditions, which were influenced by the outside environment. The results of the study show 1) the contained water rate of artificial mineral fiber insulations was big for others, 2) thermal conductivity rose as test temperature(median) grew up and 3) the extruding insulations and hardened Urethane foam changed thermal conductivity with environmental condition and time elapse.
환경 및 시간경과에 따른 건축용 단열재의 열전도율 변화에 관한 실험적 연구
이승언,강재식,정영선,최현중 대한건축학회 2003 대한건축학회논문집 Vol.19 No.12
The objective of this research is to provide the basic experimental data for thermal insulation design standard of buildings and for test criterion. We tested the thermal conductivity of insulation materials which was the insulation materials in domestic buildings with environmental condition change and long-time elapse. In research, we measured change of thermal conductivity with change of contained water rate by weight, test temperature change and the passage of time. the specimens of insulation materials were kept in test condition, which was influenced by the outside environment during long-time elapse test. The result of the research shows 1)the contained water rate of artificial mineral fiber insulations is higher than others, 2)thermal conductivity rises as test temperature goes up, 3)the thermal conductivity of the extruding insulations and hardened Urethane foam changes with environmental condition and time elapse. As a result, the test methods and standards for thermal conductivity properties have much room for consideration.