Industrial natural ventilation systems consist of gravity ventilator, the high/low windows and doors. Especially, the high windows play an important role in the industrial natural ventilation systems. Generally speaking, industrial high windows are divided into 3 types; louver type, 45° open type and 90° open type. This study was numerically and experimentally conducted. Three types of windows were tested to know the ventilation characteristics and estimate the ventilation efficiencies. Numerically, computational fluid dynamics software (AIR PAK Ver. 2.0) was used to observe the flow characteristics inside the industrial building and the concentration contours generated by the tracer gas method. Experimentally, the flow visualization technique and the tracer gas method were applied with the model building to characterize the flow pattern inside the model building and to estimate the ventilation efficiencies with the different windows. It was found that 90° open type window was most effective for the discharge of pollutants from the industrial building. On the other hand, the louver type window was found to be less effective than any other windows.

Abstract
 1. 서 론
 2. 자료 및 방법
  2.1. 연구 Case 선정
  2.2. 컴퓨터 시뮬레이션 방법
  2.3. 모형실험 방법
 3. 결과 및 고찰
  3.1. 컴퓨터 시뮬레이션 결과
  3.2. 모형 실험 결과
 4. 결 론
 참 고 문 헌

• 박승욱(창원대학교 환경공학과) | Cheng Xu Piao (Department of Environmental Engineering, Changwon National University) Corresponding Author
• 김태형(창원대학교 환경공학과) | Tae Hyeung Kim (Department of Environmental Engineering, Changwon National University)
• 하현철(창원대학교 환경공학과) | Hyun Chul Ha (Department of Environmental Engineering, Changwon National University)
• 허영빈(창원대학교 환경공학과) | Rong Bin Xu (Department of Environmental Engineering, Changwon National University)