온도차 자연환기 이론의 유량계수에 대한 연구

• Published in: 설비공학 논문집, 27(12) Vol. 27; no. 12; pp. 639 - 644
• Main Authors: 신동신(Dongshin Shin), 고현준(Hyunjun Ko), 김세형(Sehyung Kim), 선지형(Jihyung Seon), 윤상민(Sangmin Yoon), 이진영(Jinyoung Lee)
• Format: Journal Article
• Language: Korean
• Published: 대한설비공학회 2015
• Subjects: 기계공학; Thermal buoyancy(온도차부력); Discharge coefficeint(보정계수); Natural ventilation(자연환기); Eco-friendly energy(친환경 에너지); Office building(오피스 빌딩)
• ISSN: 1229-6422; 2465-7611
• DOI: 10.6110/KJACR.2015.27.12.639

This study reviews the discharge coefficient for thermal buoyancy natural ventilation through experimentation. We measure the air velocity at the outlet, which is needed to derive the discharge coefficient and to compare with the theoretical value. When a temperature difference exists between the inside and outside of the building, the measured discharge coefficient differs from the theoretical value with a maximum difference of 12%. The size and position of the openings have little effect on the discharge coefficient. For practical application, the theoretical discharge coefficient can be used with little modification.