Building a wine storage cabinet

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lebleaux

12 posts

Geek
+1 received by user: 1

#2748915 23-Jul-2021 20:10

I think this is more of a problem of managing heat transfer more than it is control per se. I have never looked at ESP Home, but will have a dig. I have played with a couple of home automation frameworks but have become somewhat wedded to Node-Red on Raspberry Pi - seems to do the things I want to do. Peltier devices are a challenge though.

mattenz

195 posts

Master Geek
+1 received by user: 48

#2748918 23-Jul-2021 20:23

There is a Node-Red integration for Home Assistant, although it's functions might soon be subsumed.

I might have thought that heat transfer might be aided by just cooling it slower, modulating the control.

lebleaux

12 posts

Geek
+1 received by user: 1

#2749266 24-Jul-2021 18:43

Yes you are correct. It is possible to change the heat transfer rate and amount by playing with the heatsinks. Today I have put an accurate temp sensor inside the cabinet, as I have described above, and can now see what effect my changes actually have. Earlier today I removed the fans on the hotside, which has reduced the cooling on the cold side - no more frost but my temperature differential between inside the cabinet is probably too small - still monitoring. I think I am going to end up with a bigger heatsink on the cold side, which should have a similar effect but, hopefully, will allow a bigger temperature differential than removing the hotside fans. Will work on that through the week. Smaller fans on the hotside are also a possibility. This is fun.

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