It is not too difficult to create a freezer that will reach "Absolute Three", but only briefly. The best I was able to achieve was just with a 1 tile room and have the fluctuations max-out at 29K.
The trouble seems to be that absolute-three is as low as the temperature will ever get, so there's no way to stabilize at that temperature because all cooling stops when it is reached, and so it immediately begins to equilibrate with the environment. Adding more coolers, regardless of the configuration, seems to have little to no effect on stamping out these fluctuations.
Doorways into freezer-rooms seem to be MAJOR sources of heat leakage. A room that can reliably touch 3K will bottom out at 15K if you add a triple-layer door to access it. I might try creating a super-cooled Anteroom to the main freezer to suck up heat before it can leak in, but still allow walking.
Doors do have an interesting side effect though. Doors can act as temperature moderators and a door inside a room against the corner can give you a better view of that room's average temperature. I would propose then that the standard way of defining the temperature that you have achieved in a room be the "Door Temperature"; the temperature of a door sitting in the middle of the room.
The trouble seems to be that absolute-three is as low as the temperature will ever get, so there's no way to stabilize at that temperature because all cooling stops when it is reached, and so it immediately begins to equilibrate with the environment. Adding more coolers, regardless of the configuration, seems to have little to no effect on stamping out these fluctuations.
Doorways into freezer-rooms seem to be MAJOR sources of heat leakage. A room that can reliably touch 3K will bottom out at 15K if you add a triple-layer door to access it. I might try creating a super-cooled Anteroom to the main freezer to suck up heat before it can leak in, but still allow walking.
Doors do have an interesting side effect though. Doors can act as temperature moderators and a door inside a room against the corner can give you a better view of that room's average temperature. I would propose then that the standard way of defining the temperature that you have achieved in a room be the "Door Temperature"; the temperature of a door sitting in the middle of the room.


