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외피 단열성능 향상에 따른 업무용 건축물 에너지 소요량 분석
서경식(Seo, Kyeong-Sik),권장혁(Kwon, Jang-Hyeok),정재욱(Jung, Jae-Uk),서승직(Suh, Seung-Jik) 한국태양에너지학회 2013 한국태양에너지학회 학술대회논문집 Vol.2013 No.4
Low-energy buildings can be realized from the sectors: building, machinery and facilities, electrical facilities, and renewable energy. Building sector can be approached from the design stage and it reflects energy-saving factors and shielding coefficient to the plan to prevent the heat loss from windows, walls, roofs, and floors. To this end, this study has set heat transmission coefficient of walls, heat transmission coefficient of windows, solar radiation transmission coefficient, percentage of window area, and density of lighting energy; performed simulations based on the standards of low-energy buildings established on 6 buildings whose energy efficiency rating was completed; and then calculated energy consumption.
박진서(Jin-Seo Park),윤태균(Tae-Gyun Yun),김병구(Byung-Gu Kim),서승직(Seung-Jik Suh) 대한설비공학회 2010 대한설비공학회 학술발표대회논문집 Vol.2010 No.6
This paper was analyzed the performance of passive solar system for office building. A unit model of the passive solar system was proposed in order to predict its performance under varying parameters and Seoul weather date. Steady state heat transfer equations were set up using a energy balanced equations and solved using a inverse matrix method. Numerical simulation program to analyze system was developed by using MATLAB. As the results, the passive solar system performance of office building was determined by the insolation and the outdoor air temperature. Also the passive solar system indicate 6.7∼27.7% of annual average efficiency. Through this study, performance of passive solar system for office building was verified by numerical method. Consequently, the passive solar system could operate an important role as the alternative for saving energy consumption of office building, and the additional studies should be made through the experimental method for the commercialization.
박진서(Park Jin-Seo),서승직(Suh Seung-Jik) 한국태양에너지학회 2010 한국태양에너지학회 논문집 Vol.30 No.4
This study analyzed theperformance of passive solar system for office building. A unit model of the passive solar system was proposed in order to predict its performance under varying parameters and Seoul weather date. Steady state heat transfer equations were set up using a energy balanced equations and solved using a inverse matrix method. Numerical simulation program to analyze system was developed by using MATLAB. As the results, the passive solar system performance of office building was determined by the insolation and the outdoor air temperature. Also the passive solar system indicate 6.7∼16.2% of annual average efficiency. In the comparison with other systems of the conventional wall, mass wall could reduce the heating loads of 7.1% and trombe wall could reduce heating loads of 11.5%. Through this study, performance of passive solar system for office building was verified by numerical method. Consequently, the passive solar system could operate an important role as the alternative for saving energy consumption of office building, and the additional studies should be made through the experimental method for the commercialization.
장향인(Jang Hyang-In),박진서(Park Jin-Seo),정진우(Jeong Jin-Woo),서승직(Suh Seung-Jik) 한국태양에너지학회 2010 한국태양에너지학회 학술대회논문집 Vol.2010 No.4
This study analyzed the performance of solar chimney system for natural ventilation in underground spaces. A mathematical model of the solar chimney was proposed in order to predict its performance under varying parameters(insolation, stack height, distance between absorber wall and glass, ratio of a cross sectional area, etc.). Steady state heat transfer equations were set up using a energy balanced equations and solved using a inverse matrix method. Numerical simulation program to analyze system was developed by using MA TLAB. The ventilation performance of the solar chimney was determined by the temperature difference of air channel and inlet, and the temperature difference rose according to increasing insolation, height and distance. In addition, ventilation rate difference of 15% happened by the cross-area ratio. Through this study, performance comparison of solar chimney system for natural ventilation was fulfilled by numerical method. Further, experimental study is required to verify numerical simulation.
유치원 건물에서 다중 히트펌프 시스템의 적용에 관한 실험적 연구
한설이(Seol-Yee Han),김서훈(Seo-Hoon Kim),장향인(Hyang-In Jang),이상혁(Sang-Hyeok Lee),서승직(Seung-Jik Suh) 대한설비공학회 2013 설비공학 논문집 Vol.25 No.10
We experimented with the energy saving effect of applying a multiplex heat pump system and suggests a dissemination plan for new and existing educational facilities. The development and dissemination of a new system could reduce energy consumption by up to 57%, and help solve environmental issues. Experimental performance evaluated in the kindergarten to analyze the energy saving effect of the cooling and heating system. The average daily COP of the cooling and heating period in the field test was 3.79. Our results showed that the annual energy consumption was reduced, and proved that the multiplex heat pump system is effective in reducing energy consumption.
지하공간을 위한 태양 굴뚝 시스템의 연간 환기성능 평가
장향인(Jang Hyang-In),정진우(Jeong Jin-Woo),박진서(Park Jin-Seo),서승직(Suh Seung-Jik) 한국태양에너지학회 2010 한국태양에너지학회 학술대회논문집 Vol.2010 No.4
In company with previous research which analyzed the natural ventilation performance, this study evaluated the annual performance of solar chimney system. A mathematical model of the solar chimney was proposed in order to predict its performance on Korea climate. Steady state heat transfer equations were solved using a inverse matrix method. Numerical simulation program to analyze system was developed by using MATLAB. As the results, the solar chimney system can provide 262.9㎥/h of annual average ventilation rate. Because seasonal differences of ventilation rate was calculated within 25%, the solar chimney system can be used for every season in Korea climatic condition. Consequently, the solar chimney system is proved to be effective device for natural ventilation utilizing at all times, and the additional studies should be made through the experimental method for imagineering and commercialization.
정진우(Jeong Jin-Woo),장향인(Jang Hyang-In),박진서(Park Jin-Seo),서승직(Suh Seung-Jik ) 한국태양에너지학회 2010 한국태양에너지학회 학술대회논문집 Vol.2010 No.4
This study aims to provide indoor temperature and thermal load of non air-conditioned room with sol-air temperature and radiant cooling effect. It is predicted by numerical method and comparative analysis of annual indoor temperature and thermal load with solar radiation. The goal of this study is to prepare the nomograph for planning the low energy building and improving thermal indoor environments on the basis of this research.