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Contact: Mr. Alex
When there is a fire, you can't take the elevator. However, when a fire is caught off guard, especially in high-rise buildings, people always want to escape the fire in the fastest way, so it is natural to take the elevator to escape.
However, you may not realize that when you step into the elevator car, it means you are one step closer to danger.
On May 18, hangzhou joint jianggan district fire elevator company, did the experiment about the elevator smoke together rescue by experiment way to tell you, why can't take the elevator to escape when fire.
Non-toxic puffs filled the elevator car
The mice were momentarily agitated
The laboratory was conducted in an elevator shaft. First, firefighters placed two laboratory mice 1.5m inside the car to simulate what would happen if humans were exposed to smoke.
In order to make the experiment more vivid effect, by simulating the negative on the first floor there is a fire, fire smoke cake at the same time, the moment after flue gas entering the elevator shaft into a vertical flow, quickly through the crack of the door into the elevator inside the capsules. After the smoke cake burns for 10 minutes, the fire department carries out simulated demolition and rescue.
Before the experiment, four probes were placed on the inside, bottom, top and corridor of the elevator car. After the start of the experiment, through the monitoring probe, we can see that when the smoke filled the elevator car, the two mice, who were originally active and jumping, apparently experienced manic restlessness.
Just a few minutes later, the elevator door opened, by fireman capsules is filled with smoke, can see through the cage although no suffocation death mice, but can obviously feel the fear of, also began to slow.
"It's a non-toxic smoke from a pancake, and if it's a real fire, there's a risk of suffocation within 3 to 5 minutes of the smoke, and once the elevator is shrouded in smoke, the whole elevator shaft becomes a dead end." Hangzhou fire detachment publicity division deputy section chief Yang Boxuan explained that this is the "chimney effect", and when a fire in the fire of visibility is almost zero, for the firefighters rescue undoubtedly has greatly increased the difficulty.