Very small packets of food will sometimes become "pinned" at 1c when moved from fridges to conveyors via autosweepers

Heat transfer only happens if there is a minimum energy transfer per time involved, see here: https://oxygennotincluded.fandom.com/wiki/Thermal_Conductivity

Could that be what you observe?

22 hours ago, Gurgel said:

Heat transfer only happens if there is a minimum energy transfer per time involved, see here: https://oxygennotincluded.fandom.com/wiki/Thermal_Conductivity

Could that be what you observe?

Unlikely:

a) Not all candidate packets are afflicted (eg some 1000g packets would cool quite well)

b) Food is rarely (never?) produced at 1c, and so must have undergone some variety of heat exchange to cool to 1c in the first place, not explained by fridge dwell time as this would be, in most cases, only 1-2 seconds (you'd expect to see a spectrum of stubborn packet temperature depending on relative time in fridge)

c) The bug is reliably resolved by loading affected packets into an unpowered fridge. I first tested this directly next to the conveyor line the items were failing to cool on, meaning all things being equal, the packets should have been expected to remain at 1c, not immediately drop as much as 40c in a few seconds.

Most importantly, though:

d) The affected packets transitioned from numerous enough to clog the conveyor to not existing at all when I modified my kitchen automation to remove fridges as an intermediary storage when sweeping items onto the conveyor - meaning they now consistently cool to the requisite minimum of -20 without fail

Changed Status to Dupe

This is currently a limitation of the simulation. We tried removing the limit last year and it caused a lot of instability. We did add a special case where Refrigerators ignore small masses when deciding to go into energy saving mode. I'd like to explore a more general solution though.

On 2/8/2022 at 3:53 PM, EricKlei said:

Changed Status to Dupe

This is currently a limitation of the simulation. We tried removing the limit last year and it caused a lot of instability. We did add a special case where Refrigerators ignore small masses when deciding to go into energy saving mode. I'd like to explore a more general solution though.

Either I'm not reading this report correctly, or this is a different case - the minimum size of food packets afflicted aren't >10g, they tend to be exactly 1kg and sometimes 2-3kg, and they transfer heat appropriately when not swept using intermediary fridges.