earticle

영어

The open state of hotel room exterior doors affects the area of smoke flow outward, which has a significant impact on fire simulation results. Moreover, based on different national standards, the results of fire simulation also vary. Therefore, this paper takes an 8-story hotel as the research object and uses PyroSim software to establish a fire simulation model. Based on the Korean standards, four fire scenarios were considered, namely, after a fire occurs, the outer door of the hotel room is in an open state, the outer door of the hotel room opens after 120s, the outer door of the hotel room opens after 210s, and the outer door of the hotel room opens after 300s. Through simulations of four scenarios, the influence of the open state of hotel room exterior doors on smoke diffusion was discussed from four aspects: visibility, temperature, CO volume, and CO2 volume. The research results show that compared with other scenarios, Scenario 3 (where the outer door of the room on fire is opened and the fire doors of other rooms are opened 210s later) shows little change in visibility below 5 meters. However, when the simulated temperature reaches 500s, the temperature of the stairwell measurement point near the fire source on the second floor decreases by 7.73%, the CO volume decreases by 9.8%, and the CO2 volume decreases by 6.73%. The simulation results of Scenario 3 are most conducive to personnel evacuation. At 210s, visibility, temperature, CO volume, and CO2 volume are all below the threshold set by the regulations. Therefore, opening the outer door of the room in a timely manner around 210s after a fire occurs is of great significance for improving personnel safety.