RimWorld

RimWorld

iMatrix7 Feb 8, 2017 @ 5:55am
Why my cooler doesn't work properly?
I always got a random effect from this coolers, and I never understood why they work properly.

Sometimes I just need one of them to cool a great room (or some of them), sometime i need 4 of them to do the same job.

Look at this screen: http://i.imgur.com/9ORhJe3.png

In that case, my cooler isn't even able to "refrigerate" my food (it keeps sayign not refr/refr... all the times..). What I'm doing wrong?

Before I was thinking that was for the fact that I placed a single hole just behind the cooler, so there wasn't so much space for the "hot air", so I excavated a tunnel, no difference.

Then I moved the light that was in front of the cooler, in the middle-top of the room, no difference.

So how can I place them correctly?

PS = That cooler is set on -279degrees, but with a temperature near 0 degrees is quite the same thing.

That's weird.
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Showing 46-60 of 67 comments
Delthea Feb 8, 2017 @ 8:56am 
Room is too big. Square footage, perimeter, and outside temp are all counted when cooling a room.

-Use more coolers on larger rooms.
-Make walls double-thick to insulate.
Peanutslol Feb 8, 2017 @ 8:57am 
Originally posted by thedudedude:
i use 2 coolers for my first freezer not problems one layer of granite -10 most of the year no problems.
Cool, but that depends on many factors, granite/material not being a factor.
Outside temperature mostly, size of room, double/single layered, time door opened, etc
temperate forest year round growing so you know
Jacki Feb 8, 2017 @ 9:03am 
Originally posted by Mytheos:
Originally posted by Jacki:
I quickly made a test:

16 tile room, wood walls, 1 wooden door, 1 cooler set to -200 degrees. cooler exhaust enclosed with wood walls (no roof area).
Those are the results

two tiles in cooler direction: -50 C in main room , Outdoor temp 0 C
1 tile exhaust: -25 C in main room, Outdoor temp 0 C
2 tiles perpendicular to cooler direction: -33 C in main room, Outdoor temp: -11 this time unfortunately, but atleast I got some results.

I think I still prefer using my own method, guys... ;)

http://steamcommunity.com/sharedfiles/filedetails/?id=859735778

Outside is 72F/22C and the coolers are set to -74F/-58C

The cooler with a single tile unroofed exhaust is 57/13CF

The coolers with 2x unroofed exhaust are both 28F/-2C, the direction of the 2 tiles being in line with the exhaust or perpendicular made no difference.
Could the cooler's efficiency be dependent on the relation outside temp/target temp? That could explain the different results... or maybe its de different room size...
Brassqund Feb 8, 2017 @ 9:18am 
-Room size
-Temperature of area around it.
-Number of layers around it
-The exit of the cooler. If the hot side is too hot, it will no be efficient.
This is why you need to make it lead to outside (a place with no roof)
One scare without roof is not optimal. This is the problem
of a lot of people.
-Door make some of heat transfer too. Even when close
Last edited by Brassqund; Feb 8, 2017 @ 9:19am
Mytheos Feb 8, 2017 @ 9:23am 
Originally posted by Jacki:
Originally posted by Mytheos:

http://steamcommunity.com/sharedfiles/filedetails/?id=859735778

Outside is 72F/22C and the coolers are set to -74F/-58C

The cooler with a single tile unroofed exhaust is 57/13CF

The coolers with 2x unroofed exhaust are both 28F/-2C, the direction of the 2 tiles being in line with the exhaust or perpendicular made no difference.
Could the cooler's efficiency be dependent on the relation outside temp/target temp? That could explain the different results... or maybe its de different room size...

Might just need to run your test for 24 hours and hit a day/night cycle so it has enough time to cool then heat back up / equalize.
Last edited by Mytheos; Feb 8, 2017 @ 9:24am
Sithis Feb 8, 2017 @ 1:33pm 
Okay, I'm back with some testing results. Had to build an entire facility, but it was totally worth it. Here's the facility itself:
http://steamcommunity.com/sharedfiles/filedetails/?id=859898148
Left to right, materials both for walls and doors are the same: wood, steel, stone (granite). The rightmost one is a double-layer wall with a buffer, both walls are steel (cmbnd1 is the temperature in the buffer layer, cmbnd2 is the room inside). Bckgr is the temperature of the "outside" area (hangar itself); Init temp is the starting temperature of every room before every experiment. Every room has a standard volume and exactly the same amount of furniture. During every test, the rooms were exposed to extreme outside conditions for about 15 seconds at speed multiplier x3.

Now, here are the results:
bckgr wood1 wood2 steel1 steel2 stone1 stone2 cmbnd1 cmbnd2
Init temp: +12 +10 +10 +10 +10 +10 +10 +10 +10
Cold temp: -50 -38 -14 -38 -14 -38 -14 -26 -15
Heat temp: +143 +59 +20 +59 +20 +59 +20 +42 +19
As we can see, the materials used had nothing to do with thermal insulation and behaved exactly the same regardless of whether the outside environment was colder or hotter than the inside. The only unusual thing I've spotted was that the double-walled room was cooling off a little bit faster, but was also heating up a little bit slower.

Conclusion: walls material does not matter when it comes to insulation; only walls' thickness does. Additionally, buffer-fitted walls might behave somewhat abnormally, but not to the point of being significantly more or less effective than 2-wide walls.
Last edited by Sithis; Feb 8, 2017 @ 8:52pm
Clarion77 Feb 8, 2017 @ 5:17pm 
But where are the test results for a double wall, with a layer of air between? There is an ingame vent that can be used the same as the hole in the roof, to heat exchange the hot exhaust from the middle core, or it could just be vented out side directly. The open roof tile is cheaper I s'pose.

Thank you
Last edited by Clarion77; Feb 8, 2017 @ 5:17pm
Sithis Feb 8, 2017 @ 8:52pm 
Originally posted by Clarion77:
But where are the test results for a double wall, with a layer of air between? There is an ingame vent that can be used the same as the hole in the roof, to heat exchange the hot exhaust from the middle core, or it could just be vented out side directly. The open roof tile is cheaper I s'pose.

Thank you
I perform additional testing today's evening, once I'm back from work.
Lawlzer Feb 9, 2017 @ 6:31am 
Originally posted by Sithis:
Originally posted by Clarion77:
But where are the test results for a double wall, with a layer of air between? There is an ingame vent that can be used the same as the hole in the roof, to heat exchange the hot exhaust from the middle core, or it could just be vented out side directly. The open roof tile is cheaper I s'pose.

Thank you
I perform additional testing today's evening, once I'm back from work.
Amazing testing!
Cowskier Feb 9, 2017 @ 8:37pm 
Build refridgerators in mountains. Provides excellant insulation
Sithis Feb 9, 2017 @ 10:03pm 
Originally posted by Sithis:
I perform additional testing today's evening, once I'm back from work.
Amazing testing!
Okay, I've ran one simple test in the same room - 2-wide walls vs 3-wide walls - and can say for sure: there is no difference between the two, insulation-wise. Moreover, I've tried it as a 2-wide wooden wall against a 3-wide granite wall, which also further supports the previous results. I don't have any screenshots of the experiment, though, and I do think there is one design that might be more effective at insulating heat, but I did not have time for that - nor to take actual screenshot. If these are still needed, I'll run these tests again today - hopefully, I'd have more free time for that.
Clarion77 Feb 9, 2017 @ 10:26pm 
Thanks for the comparison tests. They are helpful.
Sithis Feb 9, 2017 @ 10:37pm 
Originally posted by Clarion77:
But where are the test results for a double wall, with a layer of air between?
Oh, yeah, by the way, if you mean that rightmost room on my screenshot, they are in the table (cmbnd1 is the temp inside that "buffer" area - that corridor between the wall layers; cmbnd2 is the temp inside the actual core room). During testing, the buffer area was cooling/heating a bit less than regular 3x3 1-wide wall rooms (mostly because it was kept that way by the inner, core room), and the aforementioned core room was heating/cooling almost exactly the same way regular 2-wide wall rooms did, with a small abnormality - it seems to be 1*C colder on average than the 2-wide wall rooms, I assume it's caused by the way the game is rounding variables such as temperature down, and that, since we have two rooms here instead of one, two roundings make one degree go away.
Quicksilver Feb 9, 2017 @ 11:53pm 
Originally posted by Sithis:
Originally posted by Clarion77:
But where are the test results for a double wall, with a layer of air between?
Oh, yeah, by the way, if you mean that rightmost room on my screenshot, they are in the table (cmbnd1 is the temp inside that "buffer" area - that corridor between the wall layers; cmbnd2 is the temp inside the actual core room). During testing, the buffer area was cooling/heating a bit less than regular 3x3 1-wide wall rooms (mostly because it was kept that way by the inner, core room), and the aforementioned core room was heating/cooling almost exactly the same way regular 2-wide wall rooms did, with a small abnormality - it seems to be 1*C colder on average than the 2-wide wall rooms, I assume it's caused by the way the game is rounding variables such as temperature down, and that, since we have two rooms here instead of one, two roundings make one degree go away.

The temperature difference is due to the heat loss through the roof of the added area. As you increase the size of your test room relative to the air cladding room, the difference is less pronounced. In static conditions 1+1 underperforms 2 thick. As you put pawn traffic through the doors you'll find the air cladded room starts to out perform the double thick room as you reach a level of traffic where both doors are open simultaneously, particularly when the exterior temperature zone is an "outdoor" area. The choice between 1+1 and 2 is more about forward planning for what you're planning to go to later on. 1+1 is a placeholder for 1+2, 2 is a placeholder for 2+2.
Last edited by Quicksilver; Feb 9, 2017 @ 11:54pm
I think it might be a good idea to make the room smaller and not store weapons and stuff there. Only store perishable goods in a freezer
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Date Posted: Feb 8, 2017 @ 5:55am
Posts: 67