No, but I did get a cheap 12v powered peltier one to put into my filament storage tote. It gets some water in it and does drop it a bit, but nothing like a half kilo of baked silica gel does so I dont bother using it.

The ad says 110-220 volts, so according to the specification it is not for NZ as we have 230-240 volts.  Generally, buying anything mains powered from AliExpress is a bad idea, as it will at a minimum be illegal to import into NZ or use here as it will not be certified in accordance with our electrical regulations.  And quite a lot of the AliExpress mains powered gear is actually actively dangerous - built in such a crappy way that it will cause a fire or an electric shock sooner or later, and will likely not last very long before failing.

I had a look at the listing and you can buy a 12v or a 220v version.

fe31nz:

 

The ad says 110-220 volts, so according to the specification it is not for NZ as we have 230-240 volts.

At +/- 10% from nominal 230V that can be 253V.  250v is not unusual.

https://eea.co.nz/government-expands-permitted-low-voltage-range-implications-for-edbs-and-der-hosting/

looks like a pielter, which i doubt gets cold enough.

i would look at either the silica recharge ones (often used for gun safes, cupboards etc) that you take out and recharge, or the Desiccant dehumidifiers with remote hot air exhaust. downside is having to fit an air vent to let air into the fridge which you might want to filter.

gzt: I see the outlet. Where is the inlet?

I've not seen a dehumidifier before that has an inlet, perhaps that is something with huge industrial level units.

This is sold as an electrical cabinet dehumidifer so it just sits inside the cabinet (or in my case the fridge), as any domestic dehumidifier sits inside the environment it is drying.

tweake:

 

looks like a pielter, which i doubt gets cold enough.

 

i would look at either the silica recharge ones (often used for gun safes, cupboards etc) that you take out and recharge, or the Desiccant dehumidifiers with remote hot air exhaust. downside is having to fit an air vent to let air into the fridge which you might want to filter.

 

Yeah I was considering reusable silcia gel one but it sounds too much work tbh. I'm not sure if a drum desiccant dehumidifier is ideal as it generates a lot more heat, and also the odour aspect, that silica can also absorb odours and sometimes gives off odours isn't really suited to food usage.

I wonder what they use for dehumidifying in those $000 all in one dry aging appliances.

gzt: Inlet is on the back. The video says 90-265v. Video says 'insert the supplied power cord end into the terminal block and use screwdriver'. This does not sound particularly safe for a potentially wet environment.

https://www.aliexpress.com/item/1005009178042719.html

Oooh you meant the power inlet, I thought you meant the air inlet!

Glad you figured it out. I don’t have a clue about the safety aspect of things, the environment will not be wet per se, but there will be certainly a higher level of environmental humidity than say a nice dry environment, but probably nothing higher than you’d find in a damp musty closet.

tweake: looks like a pielter, which i doubt gets cold enough.

It’ll just be an general fridge cooling temperature which I’ve figured is around 4 degrees C.

When doing research I saw some numbers from 10C upwards for Peltier units.

Even if that’s true I’m still hoping to get some drying effect out of it, it doesn’t have to dry the fridge completely but just reducing the humidity by 10-20% would be great, just to reduce the chance of moisture building up on both food and fridge surfaces.

gzt: Actually mine are 25w purchased from various places. Three out of four have been good.

https://www.mightyape.co.nz/mn/buy/the-shopsite-portable-dehumidifier-800ml-43870822433009

I can't imagine any peltier device is going to be great in a refrigerated environment. One of these for example is going put 25w of heat into your fridge.

Thanks I ended up finding a 40w dehumidifier on FB for $25, this exact one:

.

Tested overnight and didn't do a thing (unsurprisingly).