구획실 내 화원 및 개구부 조건이 온도 분포와 개구부를 통한 유동에 미치는 영향에 대한 실험적 연구

Abstract

In the present study, the experiment were conducted to investigate the effects of heat release rate, fire source location, and horizontal and vertical opening areas in enclosure fire. Through a series of experiments, the influences of the fire source and opening area conditions on the temperature distribution, velocity and mass flow rate through the horizontal opening were measured and discussed, which were compared with the previous correlations. In addition, the vent flow patterns through the horizontal and vertical openings were visualized by a camera and laser. The temperatures increased with increasing the heat release rate and decreasing the horizontal opening area, while the effect of fire source location on temperature distribution seemed to be insignificant. Based on the visualizations of the smoke movement through horizontal opening, the maps of flow patterns were proposed. In addition, based on the temperature distribution measurements and experimental observations, the conditions for the outflow through the vertical opening were proposed. On the other hand, the velocity through horizontal opening increased with the increase in the heat release rate and decrease in the horizontal opening area. For the unidirectional flow conditions through the horizontal opening, the mass flow rate was examined and discussed. The mass flow rate through the horizontal opening increased with increasing the heat release rate, horizontal and vertical opening areas.