kirk781@discuss.tchncs.de to Not The Onion@lemmy.worldEnglish · 3 months agoTesla Cybertruck caught fire after hitting a fire hydrant in bizarre crashelectrek.coexternal-linkmessage-square46fedilinkarrow-up1410arrow-down110
arrow-up1400arrow-down1external-linkTesla Cybertruck caught fire after hitting a fire hydrant in bizarre crashelectrek.cokirk781@discuss.tchncs.de to Not The Onion@lemmy.worldEnglish · 3 months agomessage-square46fedilink
minus-squarech00f@lemmy.worldlinkfedilinkEnglisharrow-up6·3 months agoWater turning into steam soaks up an enormous amount of heat. I assume that thermal runaway happens somewhere above 100C, right? CO2 extinguishers work by displacing oxygen, not by cooling.
minus-squarenilloc@discuss.tchncs.delinkfedilinkEnglisharrow-up5·3 months agoThe rapidly expanding co2 does get very cold though. It’s not any different from freezing things with compressed air cans. I don’t hover, know which would absorb more heat per pound though. Someone who knows more math than I can do it though.
minus-squarech00f@lemmy.worldlinkfedilinkEnglisharrow-up7·3 months agoIf I’m reading Wikipedia correctly, it takes 348 Joules of heat to boil a gram of CO2. Water is 2257 Joules per gram. As long as you don’t need anything cooled under 100C, water is the way to go for cooling.
Water turning into steam soaks up an enormous amount of heat. I assume that thermal runaway happens somewhere above 100C, right?
CO2 extinguishers work by displacing oxygen, not by cooling.
The rapidly expanding co2 does get very cold though. It’s not any different from freezing things with compressed air cans.
I don’t hover, know which would absorb more heat per pound though. Someone who knows more math than I can do it though.
If I’m reading Wikipedia correctly, it takes 348 Joules of heat to boil a gram of CO2.
Water is 2257 Joules per gram. As long as you don’t need anything cooled under 100C, water is the way to go for cooling.