abbisalit

@fak12394567, all is not stated here:

Please include details here in this bug report or provide a corrected link. Thanks!

2 hours ago, yoakenashi said:

@fak12394567, all is not stated here:

Please include details here in this bug report or provide a corrected link. Thanks!

 

I have not seen this issue; abyssalite provides great insulation between hot and cold environments:

Spoiler

I also did an experiment separating magma (1451°C) from liquid naphtha (16.9°C) with abyssalite, granite, and insulation. After a couple of cycles, the abyssalite is more comparable to insulation than granite (which failed catastrophically). The magma cooled to 1448.6°C, which means the heat was transferred to the abyssalite. There was no change in the naphtha for abyssalite or insulation cases. The heat transfer isn't zero, but it is still very small.

Spoiler

 

Abyssalite's behaviors are somewhat inconsistent with the belief that it has a 0 thermal conductivity. Abyssalite's thermal conductivity is very very low but non-zero and higher than Insulation.

However, there is a strange behavior with abyssalite at least when it interacts with gas or liquid specifically.

Edited February 13, 2020 by DaClown

That's what I said
This is very disturbing when you are surrounded by lava, and the oxygen is heated to 1400 degrees

On 2/13/2020 at 1:53 AM, DaClown said:

there is a strange behavior with abyssalite at least when it interacts with gas

https://oxygennotincluded.gamepedia.com/Thermal_Conductivity

Per the wiki, thermal transfer between solid and gas tiles (which would include steam) is multiplied by 25, meaning gasses next to abyssalite heat faster than liquids or solids (assuming all other conditions/properties are the same).

5 hours ago, yoakenashi said:

thermal transfer between solid and gas tiles (which would include steam) is multiplied by 25, meaning gasses next to abyssalite heat faster than liquids or solids

So...it's a feature?

On 2/15/2020 at 1:17 AM, yoakenashi said:

https://oxygennotincluded.gamepedia.com/Thermal_Conductivity

Per the wiki, thermal transfer between solid and gas tiles (which would include steam) is multiplied by 25, meaning gasses next to abyssalite heat faster than liquids or solids (assuming all other conditions/properties are the same).

I am aware of that though that is effectively not documented in game and something that had to be read on a wiki. Also, the more detailed information about the specific parameters and functionality is buried on some obscure forum posts by some of the more extreme exploiters.

The issue is the thermal transfer between abyssalite and liquids however. This gets exacerbated by the rapid change from gas to liquid resulting in a kind of thermal acceleration or speed up. And it is unclear from my experiments what precisely the sequence of transformations are which make it extreme.

It seems to me that it might be more specifically the interactions between liquid drops rather than liquid tiles which is responsible for the flashing of liquids to gases in contact with hot abyssalite.

This setup better demonstrates the dynamics of the problem. The water tile will drip off the block onto the abyssalite flashing to gas; in a non-lab setup, there is likely to be a gas already near or on the abysallite which would be conducting heat to the water, but it is negligible in the determination of the issue; the issue is specifically in the thermal conductance between the liquid and the abyssalite.

With water and enough degrees of freedom like in the experimental setup shown here, the liquid will cycle to a gas state and back to a liquid state rather rapidly until the system comes to an equilibrium. I am not sure that heat or energy is conserved in this system.

The predicted thermal equilibrium is around 490 C. The actual result is around the boiling point of the water, 100 C. This state of equilibrium is reached very very rapidly too. Taking significantly less than a cycle to be reached between 1000 Kg of water and 1000 Kg of abyssalite. In fact it reaches equilibrium in about 30 seconds running at normal speed with the water starting at 0 C and the abyssalite starting at 1000 C.

In fact, there is very little difference in rate between solid thermium and abyssalite in this experiment. The thermium comes out a lower equilibrium temperature, but they take about the same amount of time to get there.

I am confident that heat is not conserved in this model as the lower equilibrium temperature than predicted necessitates that the total thermal energy of the system reduces below the input. The temperature of the insulation insulted tiles does not increase above the 20 C starting temperature.

Edited March 18, 2020 by DaClown
spreadsheet error