단방향 개구부의 형태와 위치에 따른 자연환기 특성에 관한 연구 = A Study on the Characteristics of Natural Airflow Through Single-sided Openings with Variable Position and Geometry

다국어 초록 (Multilingual Abstract)

The natural ventilation can reduce 40% energy of buildings relative to mechanical ventilation system. The driving forces for natural ventilation are wind and buoyancy. And these forces have an effect on the characteristics of openings of rooms. The horizontal exterior wind to the room was assumed as wind force. This study evaluated the characteristics of airflow through single-sided openings with variable position and geometry by using CFD. The effectively expanded domain model for CFD analysis was proposed to calculate the effect of outdoor wind. The airflow rate of 3 types of single window position(lower, middle, upper window) and 1 type of the upper and lower window(0.7m vertical distance between the upper and lower window) were investigated. In buoyancy driven flow, the airflow rate of the upper and lower window was much bigger than that of single window, and the airflow rate of the single window was not enough. In wind driven flow, the airflow rate of the upper and lower window was about 2 times bigger than that of single window.

참고문헌 (Reference)

1 "실내공기환경 관련기준의 국제기준의 국제적 연구동향"

2 "빌딩풍의 지식" 풍공학연구소 69-, 2002

3 "건물의 공조부하계산용 표준 전산프로그램 개발 및 기상자료의 표준화 연구에 관한 최종보고서" 통산부 1996.

4 "Temperature-driven single-sided ventilation through a large rectangular opening Building and Environment" 40 : 2005

5 "Numerical Heat Transfer and Fluid Flow" 1991

6 "Design analysis of single-sided natural ventilation" 2003