Electronics > Power/Renewable Energy/EV's

Another Tesla Megapack fire

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bdunham7:
https://www.vice.com/en/article/n7zd5z/california-county-tells-people-to-shelter-in-place-because-of-tesla-battery-fire

rooppoorali:
The CEO is silent about it on his Twitter account. Disappointing.

Marco:
I don't understand how these things could have a significant fire with the door closed, turn on fire hose when fire is detected and they should be full of water in no time.

BradC:

--- Quote from: Marco on September 27, 2022, 01:21:53 pm ---turn on fire hose when fire is detected and they should be full of water in no time.
--- End quote ---

They are, and they keep burning. There are three parts to the fire triangle. Fuel, Oxidiser and Heat. When your "widget on fire" supplies both its own fuel and oxidiser then the only thing you can remove is heat, and when you have no way of removing the heat fast enough then it keeps burning.

All the water does is keep the surrounding stuff from going up while it burns out the entirety of the fuel source.

Marco:
AFAIK the small amount of metallic lithium and oxygen from electrolysis is almost irrelevant, it's the electrolyte which is burning with nearly all oxygen coming from the air.

Even if electrolysis could supply sufficient oxygen, few reactions can sustain high enough temperatures under water to keep burning.

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