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논문 기본 정보

자료유형
학술저널
저자정보
방승기 (경민대학교) 안혜린 (연세대학교) 이원근 (티이애플리케이션) 문기선 (티이애플리케이션) 김종률 (티이애플리케이션) 이광호 (한밭대학교)
저널정보
한국지열·수열에너지학회 한국지열·수열에너지학회논문집 한국지열에너지학회논문집 제12권 제4호
발행연도
2016.12
수록면
40 - 46 (7page)

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초록· 키워드

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In order to improve air quality of indoor environment, studies of the underfloor air distribution (UFAD) system for application in buildings are actively in progress based on temperature and air flow distribution. However, although the age of air is the major evaluation parameter, there has been very little study on this parameter for the UFAD system. In this study, we investigated the age of air to reach the air diffuser, which is installed at the bottom of the interior by the UFAD system. Computational fluid dynamics simulations showed no regular pattern to the maximum value of the age of air in accordance with air flow rate and the velocity at air diffuser. These factors can be deduced from air movement by considering that air emitted from air conditioners was rotated according to the bottom shape of the floor, and then, the age of air in the rotation center was increased. The average age of air of internal interior was reduced considerably as the flow velocity at the underfloor air diffuser was increased from 0.5 m/s to 1.0 m/s However, the age of air was not substantially affected with change in the air volume. Moreover, when the flow velocity at the underfloor air diffuser was higher than 1.0 m/s, the age of air showed no significant difference with change in air volume or height of measurement. These results imply that indoor air quality is more substantially influenced by flow velocity than air volume, and the appropriate flow velocity is 1 m/s or more.

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Abstract
1. 서론
2. 시뮬레이션
3. 해석결과
4. 결론
References

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UCI(KEPA) : I410-ECN-0101-2017-533-002166826