구체형 지열활용 환기시스템의 동계 및 춘계 에너지 효율 분석

다국어 초록 (Multilingual Abstract)

Ventilation is essential to maintain a healthy indoor environment. However, in winter and summer, thermal conditions of outdoor air are so poor that ventilation cannot but increase energy consumption. Thus, energy-efficient ventilation system is very important. Thermal labyrinth system is a ventilation system which intakes outdoor air through an underground concrete structure shaped like a labyrinth. By the heat exchange with ground, this system can preheat and precool the outdoor air in winter and summer, respectively. The aim of this study is to analyze the energy efficiency of thermal labyrinth system, applied to the Ewha University building recently built in Seoul, in winter and spring (from Dec. 1 to May 31). As results, it was found that average heating and humidifying effects in Jan. are 13.3℃ and 0.3gw/㎏da (41.96㎾ and 2.58㎾), respectively, and average cooling and dehumidifying effects of thermal labyrinth system in May are 3.2℃ and 0.7gw/㎏da (22.97㎾ and 10.63㎾), respectively. Total outdoor air sensible and latent, heating and cooling load was found to be reduced by 29.0% through the thermal labyrinth system in winter and by 25.8% in spring.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 구체형 지열활용 환기시스템 개요 및 적용 사례
• 3. 구체형 지열활용 환기시스템 내부 지중벽 표면온도 및 유입외기 온습도 경향 분석
• 4. 구체형 지열활용 환기시스템의 난ㆍ냉방 및 가ㆍ제습효과 분석
• 5. 구체형 지열활용 환기시스템 적용을 통한 공조기 외기부하 절감량 및 송풍동력 증가량 분석
• 6. 결론
• 참고문헌

참고문헌 (Reference)

1 손원득, "지열을 이용한 공조외기부하저감 시스템에 관한 연구-지하피트 공간 내의 개구부 형상이 시스템의 열적 특성 및 기류성상에 미치는 영향" 대한설비공학회 16 (16): 1092-1100, 2004

2 이윤규, "지열 이용 쿨튜브 시스템의 최적화 설계방법연구" 152 : 177-186, 2001

3 이상엽, "Thermal Labyrinth 적용을 통한 건물 에너지 절감 효과 분석" 1281-1286, 2005

4 F. Al-Ajmi, "The cooling potential of earth-air heat exchangers for domestic buildings in a desert climate" 41 (41): 235-244, 2006

5 Kwang Ho Lee, "The cooling and heating potential of an earth tube system in buildings" 40 (40): 486-494, 2008

6 Klaus Daniels, "The Technology of Ecological Building" Birkhäuser 1997

7 이상엽, "TRNSYS를 이용한 건물에너지 해석" 26 (26): 38-49, 2009

8 안정수, "Cool tube의 열성능해석" 215-250, 1996

9 민준기, "CFD를 이용한 기상청 지중온도의 지중열원 유효성에 관한 연구 - 피트의 외기온도 저감효과를 중심으로" 2009

10 HL_PP, "Building Climatic Study Dimensioning Thermal Labyrinth - EWHA Womans University Campus Center"

11 ASHRAE, "ASHRAE Handbook 2009 Fundamentals"