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Score of a life time!
DamonHD:
@MaryB my insurers had to be persuaded to insure my Li stuff *not* in the house. In the end I managed to jam half of them in a locked cupboard in the shed under my 200Ah lead-acid and the insurers covered just those...
Rgds
Damon
joestue:
haylon won't do anything.
5/8" drywall between each cell might prevent the fire from spreading from one cell to another, provided you can keep them cool.
a controlled water mist might do it. not enough water to short out the batteries and produce hydrogen, but enough to keep the thermal conduction through the drywall from lighting the next cell on fire.
XeonPony:
--- Quote from: joestue on February 20, 2023, 01:50:39 PM ---haylon won't do anything.
5/8" drywall between each cell might prevent the fire from spreading from one cell to another, provided you can keep them cool.
a controlled water mist might do it. not enough water to short out the batteries and produce hydrogen, but enough to keep the thermal conduction through the drywall from lighting the next cell on fire.
--- End quote ---
Thankfully the battery maker did that all ready, each cell is in a protective box with high temp silicone isolators and flame guides. Apparently spear power system does military contracts and such
So the stack is very well done, it is mind blowing that the level of quality all the way up to the DC- cables been top notch then they hit the stupid wall and used a pathetic means of attaching the plate.
As for the Halon, dam, my main idea all ways was to duct the fire out side away from any thing flammable, and the center core of the battery would be the heater and isolation between the two stacks, Ultimately the goal is to move the whole power system to an out board shed.
Even the heating system, My long term plan is to only have the power cable and 2 pipes coming into the house! but for now I am enjoying not having to run the genset in the morning!
I`ll dig around and see what I got access to in terms of dry wall as that would make a suitable box!
Mary B:
Use metal studs! Drywall will lose all structural strength as the paper burns off... it MUST be supported. For the outer box I would use poured in place concrete... vent to outside with a stainless double wall pipe like my pellet stove uses and a GOOD spacer around it of stainless to keep tat pipe well away form any wood in the wall. Use positive pressure on the box to force burning gasses outside. Pretty much how the first pellet stoves worked before they figured out it was safer to pull air thru the firebox with a very high temp blower. Pressurizing it was causing hopper fires... an issue you won't have unless you have cracks the burning gasses can escape thru. Wood stove gasket cement is very high temp and can be used on the wood stove gasket material around the door into it. I use it on the gasket to the ash door on the pellet stove and to replace the main door gasket when it needs it(about due... getting a whiff of wood smoke now and then)
bigrockcandymountain:
Haha congrats on the awesome score. I think i bid you up a bit on these, but not right up to what you paid. I saw your name on the auction site and was pretty sure i knew who was bidding.
Saskatchewan is a small world, that's for sure. I'm glad they went to someone who knows the value.
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