Food doesn't cool down below 1°C

[long0900]

I was experimenting making a vacuum deep freezer and I had created the prototype and begun to move all the foods from the fridge via sweeper and conveyor rails.

Picture's here for anyone wondering:

However, some of the foods didn't want to cool down below 1°C. For example:

Have anyone noticed similar bugs?

 

[LadenSwallow]

What temperature is the coolant/heatsink that the rails pass through to cool the food before dropping in storage?

Is there a temperature check to ensure that food has spent long enough in the coolant/heatsink to cool down sufficiently?

The fact that the storage is an actual vacuum, means that the food is unable to lose further heat as it has nowhere for the heat to go; debris only exchanges heat with the cell it is in as far as I'm aware.

 

Solutions:

1) Install a conveyor rail temperature sensor and shutoff to recirculate 'hot/warm' food through the coolant/heatsink before it gets to the chute. Cons: May require a complete rebuild, has a (albeit small) power consumption for the shutoff.

2) Get a 'tiny' amount of bleach stone (grams will do) and put it on the conveyor rail; the bleach stone will 'off-gas' a tiny amount of chlorine which now presents a medium to  transfer heat, which will then exchange heat with the metal blocks. Pro: This will also remove any germs present on the food while it is being stored. Cons: Slightly more mass to cool to deep freeze temperature (1 off initial cost), heat will now transfer from water lock to chute, with only grams of chlorine this should be small, but will be ongoing, runs the risk of the water freezing (depending on temperature on the other side), may need to replace with ethanol. This heat transfer will present a (albeit small) power consumption which might be mitigated by less cooling required elsewhere.

[Gurgel]

My guess would be it is the vacuum. I agree that an easy fix is to put a tiny amount of bleach-stone on the rails.

[Orzelek]

It still should exchange heat with the metal tile below right?
Seems like a bug if some of it isn't doing that.

[long0900]

9 hours ago, LadenSwallow said:

...

I set the temperature to -50°C, lower would risk breaking the cooling pipe due to ethanol freezing.I was planning to make a temperature checking mechanism but it isn't quite necessary for now because I can chill the foods to -14°C quite fast (1 - 2 cycles, I think).

6 hours ago, Gurgel said:

My guess would be it is the vacuum. I agree that an easy fix is to put a tiny amount of bleach-stone on the rails.

 

6 hours ago, Orzelek said:

It still should exchange heat with the metal tile below right?
Seems like a bug if some of it isn't doing that.

I've read that debris does exchange heat with the tile below. Some of the foods of mine have already been cooled to near -50°C setpoint:

It's weird, now all the 1°C foods are gone.

 

[Orzelek]

There is a chance that after game reload it "remembered" that rest of food should interact with metal tile below.

[psusi]

Yea, my first thought was the vacuum as well but then I thought that debris does interact with the tile it sits on.

[Gurgel]

On 9/10/2021 at 2:38 AM, Orzelek said:

There is a chance that after game reload it "remembered" that rest of food should interact with metal tile below.

The game seems to "forget" a few things these days on occasion. Probably still after-effects from the engine update.

[RonEmpire]

There was a patch note saying that food doesn't exchange heat when dropped to the floor or something. 

 

 

I don't recommend using vacuum anyways because if the food rots. You get polluted oxygen filling up.    It's best to use hydrogen and fill it up to 2kg to prevent pdirt off gassing.