What just happened? Sour gas from another dimension? Are aliens after me?

[Ellilea]

Guys, I'm probably being a n00b, but I can't figure out wtf just happened in my colony. Here I am, having a fever, leisurely digging around some oil wells while checking out what they do and deciding that I am so not gonna brain around petroleum boiling at the moment. So instead I figured let's dig a hole to the side so that I got a nice place to pour down random mopped oil, right? There's nothing there. No pockets of sour gas, no magma. There's a slickster and a small hole of CO2 or something. Small oil spill. All black. Temperatures in the place are low enough that there's a bunch of polluted water sitting on top of the oil spill on the bottom (still visible in the screenshot).

I didn't breach into magma as you can also see.

https://imgur.com/HZ57H0n https://imgur.com/HZ57H0n

And then suddenly an EXPLOSION of sour gas. And I mean EXPLOSION. Some petroleum appeared on top of the oil well (it was mopped clean just before), and then below, and then gas everywhere in kilograms of density. Then steam! Those steam pockets range from 5-10kg! And it's spreading. I checked all the present oil it's a bit above 100 degrees. The polluted water is still not evaporating! Barely over 100 degrees. Tiles are also in that range, built from ceramic hauled from a colder place.

So what in the world have I just unleashed here? What am I missing? I was just thinking I have no means of boiling the oil to petroleum without dunking it on top of a volcano or something and then I get this lol. Wat??

 

Also none of this has ever been plugged to any power source, it's brand new with wires hanging in walls.

[crypticorb]

It's the debris.

The abyssalite from that border is insanely hot where it borders the lava zone, and was spawned in by the world generator at that temperature.

Debris exchanges heat with the surroundings, even if it is abyssalite debris.

 

Edit: it might also just be the abyssalite border itself. Abyssalite has a 0.0000 thermal conductivity, but it's not perfectly 0, which means that due to thermal conductivity averaging the abyssalite will conduct some heat into the oil and boil it. I just tested this in a sandbox and dumped a load of cold oil onto an abyssalite border at magma zone temperatures, and it all flashed to sour gas, and cooled only the edge of the abyssalite border.

[bobucles]

There's also the very strange flaking mechanic. When supremely hot materials touch a liquid, standard heat transfer rules do not apply. A portion of the cool material will instantly boil, taking energy from the overheated abysallite. Take a look at your abysallite border, it should be cooling down as a result.

[nakomaru]

It's not abyssalite debris. It's the flash boiling mechanic.

Flash boiling: if a solid tile is hotter than an adjacent liquid's boiling point, and it would remain so after transferring enough heat to boil 5kg of the material, it will instantly do so, ignoring conductivity.

[Dosephshih]

I face the same problem in my base, there is some heat leakage from the magma, and make the crude oil boils to petroleum and further boiled to sour gas.

I suggest to find out he heat leakage point first, then seal it with insulated tile.

Then filter and store the sour gas for later use, when you can set up the cooling system to get natural gas from it.

 

One of the challenge of this game is one step wrong would make you lot of follow-up fixing work.

[Ellilea]

Damn, son. Whenever I think I know the mechanics surrounding whatever the new project is the game proves me wrong  Thanks, friends.

[Gurgel]

12 hours ago, Ellilea said:

Damn, son. Whenever I think I know the mechanics surrounding whatever the new project is the game proves me wrong  Thanks, friends.

Same here

[Derringer]

On 11/28/2019 at 7:59 PM, nakomaru said:

It's not abyssalite debris. It's the flash boiling mechanic.

Flash boiling: if a solid tile is hotter than an adjacent liquid's boiling point, and it would remain so after transferring enough heat to boil 5kg of the material, it will instantly do so, ignoring conductivity.

The contact phase change mechanic does things that range from wacky to thermodynamically indefensible. With 1.5 kg of 4 °C hydrogen gas adjacent to a 1 tonne block of -1 °C ice, the hydrogen will dump enough DTU to flash melt 5 kg of ice, taking on an improbably low temperature until it equalises with surrounding material. If the block of ice is less than 5 kg, contact phase change can't trigger at all and the block may be held solid by heat conduction from adjacent blocks. This quirk ruined my day on a glacier melting operation recently.