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도심지의 온열성상에 관한 연구-제1보 도심지 온열환경 예측모델을 위한 실측조사-
손원득,이성 대한설비공학회 2004 설비공학 논문집 Vol.16 No.10
Significant air temperature increases in urban areas is well known as the heat island phenomenon in a global scale. Therefore, we propose numerical model in order to analyze quantitative effects of building environmental factors on the heat island phenomenon in urban area. In this paper, thermal property of upper atmosphere is experimentally investigated for Sakae, Nagoya Japan. In conclusion, it was confirmed that the boundary layer of a urban canopy existed near the altitude of 139 m.
손원득,이성 대한설비공학회 2004 설비공학 논문집 Vol.16 No.12
This paper presents thermal behaviors and performances of a fresh air load reduction system by using earth tube system combined with air-heated solar collector. The earth tube system reduces a fresh air load by heat exchange with soil throughout the year. In the previous experimental research, it was clarified that the earth tube system was very useful as a fresh air load reduction system. However, since outlet temperature of the fresh air which was heated by earth tube system was below 15℃ in winter, it is not suitable to introduce the fresh air into the place of residence directly. Therefore, a simulation model using the simple heat diffusion equation was used to examine a rising effect of outlet air temperature in winter by combining with air-heated solar collector. An improvement of annual performance by control of operation is also quantitatively examined. In conclusion, it is confirmed that its performance is improved by control of operation throughout the year and outlet air temperature rose by combining with air-heated solar collector.
지열을 이용한 공조외기부하저감 시스템에 관한 연구-지하피트 공간 내의 개구부 형상이 시스템의 열적 특성 및 기류성상에 미치는 영향-
손원득,이성 대한설비공학회 2004 설비공학 논문집 Vol.16 No.11
This paper presents the effect of opening configuration on the thermal behavior and air pattern of earth tube system. The earth tube system is a fresh air load reduction system by using underground double floor space for air-conditioning. In order to analyze the effect of opening configuration on thermal performance of this system and air pattern in underground double floor space quantitatively, we used a model dealing with tree-dimensional profile of wind velocity and temperature in underground double floor space. In conclusion, it is confirmed that heat exchange of a fresh air is mainly performed with upper and lower wall in underground double floor space, and that heat exchange area increased by installing the opening near the wall.
도심지의 온열성상에 관한 연구-공조배열량의 감소에 따른 도심지 온열환경의 변화-
손원득,이성 대한설비공학회 2004 설비공학 논문집 Vol.16 No.12
Significant air temperature increases in urban areas are known as the heat island phenomenon in a global scale. Therefore, we propose numerical model in order to analyze quantitative effects of building environmental factors on the heat island phenomenon in urban area. In this paper, we propose a predicting model to analyze the heat island phenomenon quantitatively. Using this model, numerical simulation is performed in order to analyze quantitative effects of many factor on the heat island phenomenon.
지열을 이용한 공조외기부하 저감 시스템의 열성능 예측을 위한 수치모델
손원득(Won-Tug Son),안창환(Chang-Hwan Ahn),공성훈(Sung-Hoon Kong) 한국생활환경학회 2007 한국생활환경학회지 Vol.14 No.2
This paper presents a feasibility study of a fresh air load reduction by using an underground double floor space. The system was introduced into a real building and was examined by the field measurement. Judging from the measurements during three years (1999~2001), the state of the system operation was very stable through this period and it was clear that the system contributes to reduction of energy consumption for air-conditioning. Futhermore, a simulation model used the simple heat diffusion equation was developed to simulate its thermal characteristics and performances. The simulations resulted in air temperature in good agreement with the measurements. Also, from the result of numerical analysis, it is clear that the amount of heat supply by using this system is more than the amount of energy loss to the room above it. Therefore, it is concluded that this systems is very useful and the proposed numerical model can be used for the prediction of system thermal performance.
지열을 이용한 외기부하저감시스템의 냉각 및 가열효과 예측을 위한 간이추정법에 관한 연구
손원득(Won-Tug Son),박경순(Kyung-Soon Park) 대한설비공학회 2010 설비공학 논문집 Vol.22 No.9
This paper presents a feasibility study of a fresh air load reduction system by using an underground double floor space. The fresh air is introduced into the double slab space and passes through the opening bored into the footing beam. The air is cooled by the heat exchange with the inside surface of the double slab space in summer, and heated in winter. This system not only reduces sensible heat load of the fresh air by heat exchange with earth but also reduces latent heat load of the fresh air by ad/de-sorption of underground double slab concrete. In this paper, we proposed a simplified presumption method for the prediction of cooling and heating performance in the system. In conclusion the proposed method has been verified by comparing with the calculated value of the numerical analysis model by using nonlinear two-dimension hygroscopic question.
신재생에너지 사용이 도시열섬방지에 미치는 영향에 대한 연구
손원득(Won-Tug Son),최영식(Young-Sik Choi) 한국산업융합학회 2009 한국산업융합학회 논문집 Vol.12 No.3
Significant air temperature increases in urban areas are known as the heat island phenomenon in a global scale. Therefore, we use numerical model in order to analyze quantitative effects by using new & renewable energy on the heat island phenomenon in urban area. The present study quantitatively analyzes the Urban Heat Island Effects, Energy-Saving Effects, and Environmental Load Decrease Effect along New and Renewable Energy Application which is 10% of the Building Energy Consumption.