So, what to do about heat now?

[axxionx12]

All this talk about deleting heat is a bit odd... Why delete heat with a sieve when you can use it for power using a self cooling steam turbine and aquatuner? Long as steam is under about 140C, your steam turbine will not need additional cooling. It'll generate about 300w as well.

[KittenIsAGeek]

On 6/30/2019 at 8:09 AM, pacovf said:

I am actually curious about this. I spent a long time looking through the internet for information on the temperatures involved in electrolysis. The only thing I could find is that steam is used, but if the output oxygen and hydrogen was in the hundreds of degrees, I feel I would have found info on that. So energy must go elsewhere than just into the temperature of outputs?

Phase transitions are energetic by nature.   To give a real-world example that you can test at home: Put a pot of water on the stove and boil it.  You'll find that with the stove on, the water heats up rather quickly.  Once the water starts boiling, it stays the same temperature -- despite the fact that the heating element is still fully on.  Until the water evaporates, all that extra heat energy is no longer going into warming the water -- its going into the phase change from water to steam.

Likewise, splitting the bonds between oxygen and hydrogen takes a lot of energy.  Much of the power used in electrolysis ends up doing the work of breaking the bonds rather than into heating the results.

ONI doesn't exactly model this.  However, because of the hysteresis coded in to the phase changes, its still somewhat accounted for.  Basically, you have to get water to 105c or so for it to turn to steam.  The steam itself appears at 100c and won't condense until it drops to 95c.  You can cool your base rather dramatically just by pumping heat into water until it boils.

[bobucles]

5 hours ago, EnderCN said:

It would also make a cool slush geyser make the entire game easy mode.  It would make polluted ice way overpowered etc.  These devices are made like this to stop people from abusing cold things as much or more than they are there to delete heat.  

False. Cool slush geysers are powerful on their own, and fixed temperature output makes them even MORE powerful. Take the cool slush, pump a ton of heat into it until it's 90C+, then filter it back down to 40C fresh water. Heat up the fresh water to 90C+, and electrolyze it to zap out 70C air. That's two gigantic heat deletions on top of any direct benefit the geyser gives.

Fixed temperature output is the biggest heat removing (and powerful heat generating) power in the game, at least until steam turbines rev up. Worts are basically toys by comparison.

[EnderCN]

32 minutes ago, bobucles said:

False. Cool slush geysers are powerful on their own, and fixed temperature output makes them even MORE powerful. Take the cool slush, pump a ton of heat into it until it's 90C+, then filter it back down to 40C fresh water. Heat up the fresh water to 90C+, and electrolyze it to zap out 70C air. That's two gigantic heat deletions on top of any direct benefit the geyser gives.

Fixed temperature output is the biggest heat removing (and powerful heat generating) power in the game, at least until steam turbines rev up. Worts are basically toys by comparison.

You wouldn't need to do any of this if you could just sieve it at its starting temperature.  All of those steps would just be worthless because it would be instant AC everywhere you want it. 

[LegioXV]

On 6/30/2019 at 6:47 AM, EnderCN said:

This is a fair point but the opinions expressed are not based in actual reality.  The purpose of this mechanic is not just to allow heat deletion, it is just as much about making it harder to ignore heat by using cold sources to cool everything down.  Without these devices a cool slush geyser would make the game about as easy mode as you can get as an example.  Removing heat deleting devices from the game would probably make it easier not harder, calling this an exploit is being naive.

Yes, I had exactly this issue, when I was sending a p-water from slush geyser to Water Sieve at around 5-10 C degree to get an output of fixed 40.

I had to build a room filled with hydrogen and some wheezeworts and 2 radiant pipes with ingoing cold p-water and outgoing hot water so they both get an average of 26 degree temperature in the result

So in many cases fixed temperature makes game harder rather then easier