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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.
손원득(Son Won-Tug) 한국태양에너지학회 2016 한국태양에너지학회 논문집 Vol.36 No.3
Remarkable air temperature increases in urban areas are known as heat island phenomenon. In this study, we analyzed the effects of renewable energy on the heat island phenomenon in urban area by numerical method. The results showed that the use of renewable energy reduces the building energy use in urban area and contributes the alleviation of the Urban Heat Island Effects.
지열 이용 외기부하 저감시스템의 냉각 및 가열효과 예측 간이추정법에 관한 연구
손원득(Won-Tug Son),최영식(Young-Sik Choi) 한국산업융합학회 2010 한국산업융합학회 논문집 Vol.13 No.3
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.
손원득(Won-Tug Son),최영식(Young-Sik Choi) 한국산업융합학회 2012 한국산업융합학회 논문집 Vol.15 No.3
Since 2010, enhancement of the building energy efficiency and certification system and public office building should have been acquiring the first grade of Building Energy Efficiency. The Building Energy Efficiency Rating evaluation tool and Dynamic Analysis Energy simulation program for Building Energy Efficiency are widely used. The suitability to those programs have been discussed as a variety of programs have been used accordingly. In this study, evaluated the characteristic of Building Energy Efficiency Rating tool(ECO2) of the business building. At a result, the variables on the Weather Data, building Profile and building Load property in hourly between those Building Energy Efficiency evaluation tools have different.
지열을 이용한 空調外氣負荷低減시스템의 설계 및 도입 효과에 관한 연구-실측결과 및 열성능 예측을 위한 수치모델의 제안-
손원득(Won-Tug Son),최영식(Young-Sik Choi) 한국산업융합학회 2004 한국산업융합학회 논문집 Vol.7 No.3
This paper presents a feasibility study of a fresh air load reduction system 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 thedtial charactenshes and performances The simulations resulted m air temperature 10 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.<br/>
손원득(Won-Tug Son),장환(Hwan Jang),신지웅(Jee-Woong Shin),김종민(Jong-Min Kim),박찬석(Chan-Seok Park),조종선(Jong-Sun Cho) 대한설비공학회 2012 대한설비공학회 학술발표대회논문집 Vol.2012 No.6
This study has been conducted to propose an optimal design guidance of underfloor air distribution system by examining air pattern and proper exhaust status of floor plenum using CFD (Computational Fluid Dynamics). Simulation shows deficient air pattern and exhaust status at BPG (Bypass Grille) of the current design. As a means to find an alternative design, four cases have been developed and tested. Case 1,2 and 3 show similar results in comparison to the current design. However, case 4 shows improved air pattern and exhaust status at BPG(Bypass Grille), and has been chosen as the optimal alternative.
지열을 이용한 空調外氣負荷低減 시스템의 설계 및 도입 효과에 관한 연구
손원득(Won-tug Son),최영식(Young-sik Choi) 한국산업융합학회 2008 한국산업응용학회 학술대회 논문집 Vol.- No.-
This paper presents a feasibility study of a fresh air load reduction system 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.
지열을 이용한 외기부하저감시스템의 외기온도와 출구온도의 상관관계 분석
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 investigated the correlation between outdoor air temperature and outlet air temperature in the system. In conclusion, from the results of the high correlation we proposed a equation of regression for the outlet air temperature in the system by using linear regression analysis.