| 英文摘要 |
This research focused on using an experiment platform and ceiling at distances of 5.3m and 4.1m. The sprinkler heads were installed at 5.2m and 4m away from the platform, and while under different shielding rates, it was experimented whether or not there would be sprinkling obstruction. Experiment results showed when the sprinkler heads were at 5.2m, the sprinklers would all fail to extinguish the fire as a result of being too far from the fire, regardless of whether the shielding rate was 0%, 35%, or 70%. The actuation times of the sprinklers on the upper layer of the obstacles were unstable and could not effectively extinguish the fires on the lower layer of it, but they could still protect the areas above the obstacles, like HVAC systems and pipelines. When the sprinkler heads were at 4m with the ceiling at 4.1m, the sprinklers could only extinguish the fires if the shielding rate was at 0%. It is recommended that the NFA continue to use sprinkler heads to handle fires on the upper layers of the obstacles, but to use fixed temperature detector linked open head sprinklers in order to assure the protection of the lower layers of the obstacles. |
