Abstract: Six combustion experiments of different fire source sizes, opening and closing conditions were carried out in the container combustion training room. The internal temperature distributions were studied to give reference for firefighters to make training plan and to carry out actual combat training. The experimental results showed that the phenomenon of transient combustion occurred under closed-door combustion condition. When the door was opened, the heating rate of ignition source increased and the highest temperature appeared at the ceiling. When the door was closed, the maximum temperatures of small, medium and large fires were 331, 463 and 752 ℃, respectively. With the increase of horizontal distance from the fire source, the temperature decreased rapidly at first and then raised slightly. The temperature at the 1.2 m height ranged from 100 ℃ to 180 ℃. In the comparison experiments of medium large fires under closing door and opening door conditions, it was found that high temperature duration increased, and the temperature at monitoring sites except fire source decreased significantly with the increase of the area of opening door. The average highest temperature at the 1.2 m height was about 70 ℃.

Key words:  fire protection, combustion training room, temperature distribution, emergency rescue