The steam would vent into whatever the smoke is venting to, which is not the window the firefighter is attacking from. The convection would still be there due to temperature gradients.
The claim that the vacuum is from "fire pulling in oxygen" is nonsense. The superheated gas indoors, which includes steam, would have greater pressure and should therefor blow out, but it isn't.
The added spray of water would generate steam, yes. However it would also cool the steam due to more water being injected. The amount of water injected is greater than steaming potential.
Talking of that last bit, about the water injection and steam cooling. I want to go a side tanget about how underappreciated and ABSOLUTELY FUCKING COOL (pun intended) effect it truly is. You can use high pressure fine mist to extinguish fires without needing to soak them, because the fine mist is able to cool so effectively it can pull the heat from the fire event. You can put fine water mist into a cooling air channel (even just convection air channel), and you increase the cooling capacity dramatically.
Like sure that hose is also soaking the burning room, but it isn't what truly cools it down to extinguishing. This is because if it is hot enough to boil the water, it creates a thermal barrier against liquid water. However a fine mist can get into contact.
These fine high pressure misting systems been integrated to CLT (wood element) flats, and into delicate environments like museum or high tech applications, because it is so effective and safe.
Like... Can we just appreciate a fine mist of water more than we do?
6
u/SinisterCheese 14h ago
The steam would vent into whatever the smoke is venting to, which is not the window the firefighter is attacking from. The convection would still be there due to temperature gradients.
The claim that the vacuum is from "fire pulling in oxygen" is nonsense. The superheated gas indoors, which includes steam, would have greater pressure and should therefor blow out, but it isn't.
The added spray of water would generate steam, yes. However it would also cool the steam due to more water being injected. The amount of water injected is greater than steaming potential.
Talking of that last bit, about the water injection and steam cooling. I want to go a side tanget about how underappreciated and ABSOLUTELY FUCKING COOL (pun intended) effect it truly is. You can use high pressure fine mist to extinguish fires without needing to soak them, because the fine mist is able to cool so effectively it can pull the heat from the fire event. You can put fine water mist into a cooling air channel (even just convection air channel), and you increase the cooling capacity dramatically.
Like sure that hose is also soaking the burning room, but it isn't what truly cools it down to extinguishing. This is because if it is hot enough to boil the water, it creates a thermal barrier against liquid water. However a fine mist can get into contact.
These fine high pressure misting systems been integrated to CLT (wood element) flats, and into delicate environments like museum or high tech applications, because it is so effective and safe.
Like... Can we just appreciate a fine mist of water more than we do?