How do you make the coldest cellar?

[InnocentGambler47]

Do I just dig it as deep as possible? yet I read somewhere that leaving the walls, floor, and also the ceiling as natural dirt/rock tiles is best?

I've placed stone floors on the ground and ceiling in my cellar, is this somehow ruining my cellar?

[Shealladh]

Originally posted by Sceadugengan:

Are you playing a modded game or on an older version?
I cannot store ice blocks in shelves.

You are correct.
There is no Storage Shelf choice to store ice. Which is silly, if you could, then 1 ice on a storage in middle of room would help.

You can place on floor in a Stock Pile, maybe near entryway?

[VANGUARD]

My last attempt was a four-layer clay wall 5x11 room deep underground.
A long tunnel leads to the room with several doors inbetween, forming one tile sized air locks each.
Each airlock and the room is filled with ice blocks to the brim, with the room containing a single ice box.
Visually the temp dropped to freezing point (0.0°C), but apparently it still wasn't cold enough for the ice box to produce ice.

Seems to me like the devs don't want us to produce ice all year.

[salzlaender]

Originally posted by Sceadugengan:

My last attempt was a four-layer clay wall 5x11 room deep underground.
A long tunnel leads to the room with several doors inbetween, forming one tile sized air locks each.
Each airlock and the room is filled with ice blocks to the brim, with the room containing a single ice box.
Visually the temp dropped to freezing point (0.0°C), but apparently it still wasn't cold enough for the ice box to produce ice.

Seems to me like the devs don't want us to produce ice all year.

Now, what is the actual definition of freezing point?
Does water freeze AT 0°C or BELOW 0°C??

[VANGUARD]

Originally posted by salzlaender:

Originally posted by Sceadugengan:

My last attempt was a four-layer clay wall 5x11 room deep underground.
A long tunnel leads to the room with several doors inbetween, forming one tile sized air locks each.
Each airlock and the room is filled with ice blocks to the brim, with the room containing a single ice box.
Visually the temp dropped to freezing point (0.0°C), but apparently it still wasn't cold enough for the ice box to produce ice.

Seems to me like the devs don't want us to produce ice all year.

Now, what is the actual definition of freezing point?
Does water freeze AT 0°C or BELOW 0°C??

Who knows.
In the UI it said 0.0°C, which usually would be the freezing point.
Maybe the temp was actually something like 0.00123°C, so slightly above freezing point, and the UI rounded it down to 0.0°C.
Or maybe the devs inserted a check in the task to test if the ice box is in a cellar and then just forbid production.

[VANGUARD]

Well, going by that the temp needs to be factually below 0°C, so getting it to 0°C is not enough.
And ice blocks cool a room down to only 0°C.
I can't see how to get it any lower.

[Neutronium Beast]

So, those who can figure out the numbers and stuff. Whats the verdict? Wood floors and Clay Walls? Dirt naked floors and walls? Clay walls and brick floors? Whats the best results for the deep down cellar ?

[K. Kas]

I haven't done extensive number crunching, but it seems like the 'bare soil' cellar method is indeed outdated. Before, any walls/floors would create heat and insulate that heat. In previous patches, it seems that was fixed. I've used wood floors and clay walls since they had the highest insulation of the base materials.

This keeps cellars a few degrees colder than bare soil cellars. I haven't min-maxxed it but doubling the clay walls and keeping the room small with airlocks would probably shave even more off.

However, ice blocks are more effective than any of this as far as I've seen, and using everything mentioned should keep any underground room near 0 degrees year round.

All that said, once you hit around 3 degrees you're good, unless you're storing 2000+ raw foods, then maybe some will rot after sitting unused for many seasons.

[VANGUARD]

In my testing I've found that you can have up to three layers of walls and see an effect on the temperature.
The build menu says dirt walls have an insulation factor of 95% but going by what I've observed that's a filthy lie.
Rooms with clay walls were much colder than dug out bare faced rooms.

[Mr-Bandit]

i have noticed that smaller underground rooms seem to be warmer than larger ones, and have succeeded in dropping the temp of a underground room by enlarging it.


i remember reading a while ago that the temp of a room was affected by the temp of what was above it, so to avoid building under your own base. cannot remember details, but read it in here somewhere...

if true, then it may be worth creating a room above cold storage and filling it solely with ice, so the cold room below would be based on those low temps? time to experiment??


do we have any solid info on how insulation actually works? does it just keep heat in or cold too? similar mechanics to rimworld? if so is double walling effective???

[Allisonlj]

Go to guides, sort by top rated of all time; the one at the top is about cold storage and breaks it down very clearly.

[K. Kas]

Originally posted by Allisonlj:

Go to guides, sort by top rated of all time; the one at the top is about cold storage and breaks it down very clearly.

That guide is outdated. Temperature was reworked around 1.4, and I can confirm the raw soil strategy mentioned doesn't work anymore.

Edit: However this newer one seems accurate: https://steamcommunity.com/sharedfiles/filedetails/?id=2992452919

[Shealladh]

Originally posted by K. Kas:

Originally posted by Allisonlj:

Go to guides, sort by top rated of all time; the one at the top is about cold storage and breaks it down very clearly.

That guide is outdated. Temperature was reworked around 1.4, and I can confirm the raw soil strategy mentioned doesn't work anymore.

Edit: However this newer one seems accurate: https://steamcommunity.com/sharedfiles/filedetails/?id=2992452919

Thanks have to have a test of this new Guide