abyssalite giving off heat?

[rav]

i have some very hot abysallite at +1000C° and it heats the oxygen around it up constantly. is this normal? Shouldnt abysalite not have any heat exchange? Its thermal conductivity is listed as 0

[fractalgem]

Abyssalite isn't quite 0, it just displays as such because of rounding and limitations of the display.

[gimmethegepgun]

It's due to an oddity in how temperature calculations happen when fluids are moved around. I think it's due to the element being newly introduced adjacent to the abyssalite, which means that you have other elements floating around.

Anyway, just wall it off. It's only for liquids and gases hitting it, not tiles sitting next to it.

[Evilsod]

It's something to do with when Abyssalite comes into contact with something when its temperature is above that substances flash point. It's why you need to be careful in the oil biome when digging out the floor. You can very easily flash crude oil straight into sour gas until the temperature of the exposed abyssalite evens out.
Only happens for liquids/gasses, a tile will never exchange heat with it.

[rav]

interesting , but yeah when i saw it i immediatly put insulated tiles there, i just thougt its weird because i always thought abyssalite is the perfect insulator.

[gimmethegepgun]

btw it doesn't need to be insulated tiles. Regular tiles will be fine, the abyssalite is already a perfect insulator other than the weird flashpoint thing.

[zverozvero]

Think its related to Flaking when cells exchange bits of energy ignoring conductivity.
https://oxygennotincluded.fandom.com/wiki/Flaking

[fractalgem]

Originally posted by gimmethegepgun:

btw it doesn't need to be insulated tiles. Regular tiles will be fine, the abyssalite is already a perfect insulator other than the weird flashpoint thing.

its
not
QUITE
perfect.

[XceptOne]

Hmm, I was under the impression that OPs' question is already fully answered by the fact that heat exchange between solid- and gas-cells has a multiplier of 25 and that the game will use the geometric mean of both conductivities involved, instead of the lower one.

So, transfering heat between abyssalite and a solid cell will usually fail, because low conductivity and high mass of the solid cell will result in a temperature change that is too small for the game to track.

For a gaseous cell exchanging heat with a solid cell, all heat transfer will be multiplied by 25. Add the fact that gases usually have low mass. This will result in a noticable temperature change on the gas side with only low energy usage and is the reason that a hot abyssalite tile can heat gases directly touching it.

(For completeness: liquid to liquid heat transfer has a large multiplier of 625, everything else has 1)
https://oxygennotincluded.fandom.com/wiki/Thermal_Conductivity


So, there shouldn't be a need to bring up advanced stuff like flaking, which shouldn't even work on gases.
But as we are at it, one might mention that digging up a cell will dump a part of its' heat content into its' environment. -> Digging up a hot abyssalite tile surrounded by oil will instantly boil large amounts of oil into petrol and sour gas.

[vonVile]

Place a bunch of Storage in the area and fill them with Ice and Snow. ONI has a bug that can't melt tons of freezing stored solid liquids. The defrost rate is just as slow as the Abyssilite temperature exchange rate.

I don't know if this will work at 1000c, but it does with an erupting Water Geyser at 1/4 the temperature. I currently have a Water Geyser confined and the Ice and Snow in a bunch of storage set at 5000kg in the room hasn't melted in over 200+ cycles. The room is hot except for where the storage is at being near freezing. To melt it I have to put it in storage set to 500kg next to the geyser.

[Angpaur]

The more mass and SHC then the more energy or time are required to heat it up. This is not a bug.

You can try to calculate how long it can take to melt ice if you know its mass and heat you provide.

So 5000kg of ice is 5000 * 2.05 = 10250 of kDTU required to rise its temperature by 1C. If your ice is for example -30C, then you need aproximately 33C * 10250 = 338250 kDTU of total heat. A space heater can add that much of heat in 31 cycles, but things stored in bins have limited way to exchange heat with surroundings, so it will take longer.

The best way to just melt ice is to build tempshift plates out of it.