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논문 기본 정보

자료유형
학술저널
저자정보
윤성훈 (남서울대학교)
저널정보
한국태양에너지학회 한국태양에너지학회 논문집 한국태양에너지학회 논문집 제40권 제1호
발행연도
2020.2
수록면
25 - 33 (9page)

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초록· 키워드

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It has been reported about the energy saving performance of UFAD(under floor air distribution) system and NPC(night purge cooling) system respectively which are applied for commercial buildings. However, when two systems are used at the same time, the effect of heat transfer from floor plenum to slab may vary depending on the operating conditions of NPC. In this study, cooling energy demands were analyzed for building models with UFAD and NPC by using TRNSYS 17 program. UFAD was applied as a cooling system of the base building model, and the cooling energy demands were compared for 64 cases in which the operating time, supply airflow rate, and outdoor air temperature(To) of NPC. As a result, i t was confirmed that the cooling energy demands were reduced to 30 ~ 80% level compared to UFAD alone, and in particular, the energy demand was reduced in proportion to the supply airflow rate or the operating time while To was 16 ~ 20℃. However, when To was 22℃, the increase in the supply airflow rate or the operating time results in a disadvantage in terms of cooling energy demands. In addition, the cooling energy demands for UFAD+NPC model were analyzed by applying weather data from three regions with different average outdoor air temperatures. As a result, the cooling energy demand of operating NPC only when To was below 20℃ was reduced by 27% compared to that of operating NPC continuously for 8 hours.

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Abstract
1. 서론
2. 연구의 범위 및 방법
3. 결과 분석
4. 결론
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UCI(KEPA) : I410-ECN-0101-2020-563-000419016