Boiling Water/Polluted Water

[Giftpfeil]

Water and polluted water have rather low thermal conductivity. This does not usually matter all that much, but it can be rather strange and annoying when water hits solid iron literally over a thousand degrees and just... sits there and heats for a while. I just find this unnessesarily inconvienient, as it drags what should have been a simple operation, boil some water and cool the metal, out for many cicles. I just thought i would point it out, as it is both inconvienient AND not how one would expect water to act.

[SharraShimada]

You dont expect water to steam off, it it hits 100°C? How do you make tea, or noodles?

[Giftpfeil]

Quite the opposite. I DO expect it to do just that, yet sometimes it just sits on top of heated sand and iron for cycles on end without vaporising.

EDIT: A bit of experimentation revealed, that this was happening because, for some reason, a layer of a few grams of sand kept forming. My best guess is, that due to the low mass it failed to conduct the heat. No idea where the sand is coming from.

[Coolthulhu]

1 hour ago, Giftpfeil said:

EDIT: A bit of experimentation revealed, that this was happening because, for some reason, a layer of a few grams of sand kept forming. My best guess is, that due to the low mass it failed to conduct the heat. No idea where the sand is coming from.

Polluted water boils to steam+tiny bit of dirt. Dirt heated over 330C or so turns to sand. It always turns to sand block, which means you can have milligram-sized blocks of sand that really block conduction and flow.

[firefighter34]

YESSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS I NEED THIS (FOR MY STEAM ROCKT(S))

[Giftpfeil]

On 23.5.2019 at 8:23 PM, Coolthulhu said:

Polluted water boils to steam+tiny bit of dirt. Dirt heated over 330C or so turns to sand. It always turns to sand block, which means you can have milligram-sized blocks of sand that really block conduction and flow.

Ah, thank you, that explains the random sand.

It does seem to me that my orignal point still stands then, as this makes boiling polluted water rather... slow.

Perhaps a limit to how much the (low) mass of the square can effect heat convection would be usefull, as one would of course not expect a few grains of sand to work as an insulator.