Would Peltier-ice cooling work?

MEMESEY · Aug 2, 2017

My idea is that you fill a case with mineral oil, and then make one side out of peltier devices. Then take a container of the same size as the peltier side of the case, fill it with water. Freeze it and attach it to the case.

Logically, the thermal energy should be converted to electrical energy, and then it's merely a case of replacing the ice block every now and then?

kanewolf · Aug 2, 2017

Any lower than ambient cooling is a non-starter in most cases. The loss of cooling to the ambient environment will happen continuously. Unless you were in a vacuum to isolate your cold, you just waste energy, generate a huge amount of condensation, and make a mess.

USAFRet · Aug 2, 2017

then it's merely a case of replacing the ice block every now and then

Every hour or two...

Constructs like this are good for a one time experiment, to prove a point, or achieve some magical OC number, never to be repeated.
Momentary bragging rights.

Expense, condensation, time wasted.

What, specifically, is the desire for this?
As a hobby, sure. Go for it.
To get better 'performance'? No. Unless you measure 'performance' in temperature, rather than FPS or similar.

You'd probably get better results renting a walk in freezer for a couple of days.

MEMESEY · Aug 2, 2017

kanewolf :

You can get a square thermos so I don't see much issue there, and the container is sealed so any condensate would remain within.... And the generated electricity can be re-wired into the PSU...

MEMESEY · Aug 2, 2017

USAFRet :

Well, I don't see cost being much of an issue... If you already have a freezer running, making ice isn't going to cost you too much. And if you have a large enough container, you could logically get away with it...

USAFRet · Aug 2, 2017

MEMESEY :

Said by someone that does not really understand how a typical residential freezer works.
And the 'expense' was in actually building this low performing abomination.

Mineral oil + ice + peltier + PC does not really equal 'logical'.

Again...aside from a hobby thing (which is OK as a result in itself)...what number are you looking to achieve with this?

MEMESEY · Aug 2, 2017

USAFRet :

Rather than look for numbers, this pc would have no moving parts. I am trying to obtain complete silence, rather than just being quieter. It doesn't have to run at low temperatures, only that complete silence is obtained.

USAFRet · Aug 2, 2017

MEMESEY :

Somehow, you still need to remove the heat from the oil tank. A block of ice strapped to the side won't do it.
You'll need a pump (noise) to circulate the heat to somewhere else.

A silent PC is easily done, in a soundproofed cabinet under your desk. A single large, low RPM fan, to remove the heat from that box.

MEMESEY · Aug 2, 2017

USAFRet :

No I mean a peltier device requires a constant source of high heat one one side and a constant low on the other, as energy still transfers. So in theory, if a sizeable portion of the energy is turned into electrical and removed, the ice wont melt as quickly. This would mean a constant removal of heat with no moving parts, especially since even the slowest fan will generate noise.

The ice could then be replaced once melted, if you could swap out the containers....

USAFRet · Aug 2, 2017

Build it.
Document it.
Show us the results.

MEMESEY · Aug 3, 2017

USAFRet :

Slight issue with funding at the moment, so it may take a while. Give me a few months (may be sooner if I can rebuild my pc sooner... I cooked the motherboard, and I'm a bit scared to use anything but the fan again).

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Would Peltier-ice cooling work?

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