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모델실험 및 수치해석을 통한 페리미터존 에어배리어 공조방식의 열성능 평가
함흥돈,박병윤,손장열 대한설비공학회 2005 설비공학 논문집 Vol.17 No.10
For the purpose of evaluating the thermal performance for air-barrier air conditioning system in perimeter zone, two air-conditioning systems, conventional perimeter air- conditioning system and air-barrier system, are evaluated and compared by scale model experiment and simulation during cooling season. As a result, measurement shows that supply air velocity of 1m/s in the upstream direction at perimeter is more effective. Air-barrier system could reduce the cooling energy by 10∼20% compared with conventional system. Numerical simulation was carried out considering solar effect for reliable result. This method has improved the accuracy of numerical simulation for the space affected by the solar radiation. Both measurement and simulation results show that supply air velocity of 1m/s at perimeter is the most effective.
함흥돈(Heung-Don Ham),백용규(Youg-Kyu Baik),손장열(Jang-Yeul Sohn) 한국생활환경학회 2005 한국생활환경학회지 Vol.12 No.2
For the purpose of investigating the effective removal of cooling load from light-weighted building envelope, two air-conditioning systems, conventional all-air and air-barrier system, are evaluated and compared by both experiment and simulation with three different cases during cooling season. The characteristics of window-side building thermal load are assessed by varying supply air velocity in order to seek the optimal system operation condition. The results are as follows. Air-barrier system is more effective to remove solar radiation through glass at perimeter zone than conventional all-air system. The experiment results provide that capturing efficiency to evaluate the effective removal of building load from perimeter zone shows high value when supply air velocity is 1 ㎧.
페리미터존의 에어배리어 공조방식에 따른 실내 열환경 평가
박병윤,함흥돈,손장열 대한설비공학회 2005 설비공학 논문집 Vol.17 No.4
For the purpose of investigating the effective removal of heating/cooling load from light-weighted building envelope, two air-conditioning systems, conventional parameter air-conditioning system and air-barrier system, are evaluated and compared by both experiment and simulation with six different cases during heating and cooling season. In addition, the characteristics of window-side building thermal load are assessed by varying supply air velocity in order to seek the optimal system operation condition. The results are as follows. 1) Air-barrier system is more effective to remove heating/cooling load at perimeter zone than conventional parameter air-conditioning system. Moreover, the better effectiveness appears during cooling season than during heating season. 2) The experiment during cooling season provides that indoor temperature of air-barrier system shows 1℃ less than that of the conventional system with similar outdoor air temperature profile, and indoor temperature distribution is more uniform throughout the experimented model space. It concludes that air-barrier system can achieve energy saving comparing to the conventional system. 3) The capturing efficiency of air-barrier system is 0.47 on heating season and 0.2 on cooling season with the same supply air volume. It results that the system performs effectively to remove building thermal load, moreover demonstrates high efficiency during cooling season. 4) The simulation results provide that capturing efficiency to evaluate the effective removal of building load from perimeter zone shows high value when supply air velocity is 1 m/s.
이철구,함흥돈 청운대학교 건설환경연구소 2012 청운대학교 건설환경연구소 논문집 Vol.7 No.2
According as energy saving tendency throughout the whole world, legal aids, such as ‘Fundamentals of Low-carbon Green Growth Act’, ‘Green Building Support Act, have been prepared in Korea. Energy saving effect and economic merit was carried out in case that lighting fixture, shower head and gas boiler would have been changed to new high efficiency apparatuses. General apartment house, which has width of 85.2m2, was an object of the study. As conclusions, electric charge will be reduced by ₩78,000 caused by changing of lighting fixture, water and gas charge ₩59,640 due to change of shower head, and gas charge ₩22,270 caused by changing of gas boiler per year. Payback period of each case was estimated 25.6 year, 0.2 year and 35.9 year, so economic merit is sufficient at shower head, and insufficient at lighting fixture and gas boiler. 범세계적 경향인 에너지절약 정책에 관련해서, 우리나라에서도 ‘저탄소 녹색성장 기본법’, ‘녹색건축물 조성지원법’ 등 법적 지원책을 마련하고 있다. 본 연구에서는 건물에서의 에너지사용 기기인 조명기기, 샤워기, 가스보일러를 고효율 기기로 교체할 경우의 에너지절약 효과 및 그에 따른 경제성을 검토하였다. 조사는 가장 일반적인 건축물인 공동주택을 대상으로 하였으며, 세대 규모는 4인 가족 기준으로 하여 전용면적 85.2m2로 가정하였다. 조사 결과, 고효율 조명기기로의 교체로 인해 전기요금이 연간 78,000원 절감되고, 절수형 샤워기로의 교체에 따라 수도요금과 가스요금의 합계가 연간 59,640원 절감되며, 가스보일러 교체로 인해 가스요금이 연간 22,270원 줄어드는 것으로 산정되었다. 교체비용을 고려한 투자비 회수기간은 조명기기가 25.6년, 샤워기가 0.2년, 가스보일러가 35.9년으로, 가스보일러와 조명기기는 교체로 인한 경제적 이점이 없지만, 샤워기는 매우 큰 의미가 있는 것으로 나타났다.