Your can is too hot to cook with. It's time to leave...

[georgeib]

‘Spritz’ it with a atomizer water sprayer so it’s a mist?

For a wrap or something, even if that material is rated, if you put that then in a bag, the energy has to go somewhere. Maybe it slows the flow enough to keep nylon or PP from melting? 200-250C

I imagine light but continuous misting would be a lot more effective than something like a barrel cooler, but would need to be light enough to prevent large differences in temperature from one part of the structure to another. OTOH, I've seen video of people dumping their smoking hot cans in a barrel of water, with no immediately obvious ill affects, so I may be way off on this.

[Ron3]

I don't understand why "misting" would work better than moving air.

The droplet would have sit on the surface, absorb heat, then be blown off.

Is that what happens?

I know it works on people. But skin is different than metal.

I've heard of guys doing this with hot vehicle differentials after road course action. But I'm not sure why a light mist of water adds to the effect of fresh air blowing over hot metal parts.

[georgeib]

I don't understand why "misting" would work better than moving air.

The droplet would have sit on the surface, absorb heat, then be blown off.

Is that what happens?

I know it works on people. But skin is different than metal.

I've heard of guys doing this with hot vehicle differentials after road course action. But I'm not sure why a light mist of water adds to the effect of fresh air blowing over hot metal parts.

Because water has a much much higher heat capacity than air. IIRC, the ratio is about 4:1. An example might be why modern engines are water vs air cooled. Water is simply able to absorb and transfer way more heat than air, allowing engines to make a lot more power.

[Disciple]

Even more significant is the latent heat of the phase change to vapor.

[FromMyColdDeadHand]

That’s my geeks…. Yep, that transition from liquid to gas is a big energy suck.

Implicated in this is metallurgy, which I thought was one of those 19th century things, but far from it. I do think that ceramic type material is the next real frontier. Imagine if silica were the main material, and you had nuke or other renewable energy to convert it with AI robots. Free + Free = Not that much. Think Robbie the RObot in Forbideen Plant…

[Bret]

I don't understand why "misting" would work better than moving air.

The droplet would have sit on the surface, absorb heat, then be blown off.

Misting works better because there are far more water molecules in a given volume of space than there are gaseous molecules in the same volume of space. Each water molecule that hits the surface takes energy with it as it turns to steam. Take a look at the graphics in the link below.
https://chem.libretexts.org/Bookshel...ids_and_Solids

This is why water is almost always used to cool large internal combustion engines instead of air. Water has also been used to cool some machineguns, though it's pretty inconvenient.

[Ron3]

Thanks!

I.C.E. cooling I understand.

I wasn't sure exactly how misting helped.

Also, the water in the mist has to evaporate. Water in Florida air is tougher to evaporate when the humidity is high...which is nearly always.

[Disciple]

Also, the water in the mist has to evaporate. Water in Florida air is tougher to evaporate when the humidity is high...which is nearly always.

If the item to cool is over 100C that shouldn't matter as the vapor pressure overcomes atmospheric pressure.

[FromMyColdDeadHand]

Thanks!

I.C.E. cooling I understand.

I wasn't sure exactly how misting helped.

Also, the water in the mist has to evaporate. Water in Florida air is tougher to evaporate when the humidity is high...which is nearly always.

‘Wicking’ fabrics actually work here in CO…

I brought up the misting just as a way to avoid a large thermal change over a short time from ‘dunking’. Though, if you dunk the whole thing, it probably would cool fairly evenly- though you’d have a bunch of steam coming up the barrel.

Related to the misting, would be the use of water/water-glycol water induction systems on WWII airplanes.

[JediGuy]

I’ve always allowed enough time to mostly cool, but also wrapped in ammo box cardboard if it’s still a little hot. I picked up a curling iron holder recently but haven’t used it yet.