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Old 29-07-14, 10:37 PM
RadeonHDx RadeonHDx is offline
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My cooking pot!

Before I start this thread I just want to say that I have been inactive for the last little while as I kind of lost interest in PC's for a while and this thread is really just to see if I want to start spending some more time on the forum.

Last night I got bored of just playing countless hours gaming with a noisy setup mostly caused by the noise of my fans. This got me thinking about a video I saw a while ago where a pair of Eastern Europeans (Russia, maybe?) had put their watercooling loop in a bucket of ice and salt and were getting incredibly low temperatures with their fluid in the loop at -11C! Last night I dug the video up from YouTube and shortly after put a tub of water in the freezer.



By the end of last night I had everything sorted for my test.

At first I started with a small tub of ice water and put my rad from my H60 in it. The rad was only half submerged but the effects truly blew me away!



The temps were good but nothing special and I knew that I would either need to constantly fill the tub with ice, buy a peltier and think of a way to mount it to cool the water or I could get a bigger pan and add ice when appropriate.

I decided to go with option 3 although option 2 of the peltier is still a possibility so i bought a cheap £3.50 one off of ebay.



This was the result and opposed to what I was expecting the 'Cooking Pot' keeps the system around 65C after an hour of prime95! But in games only hovers around 45C and in a regular environment of web browsing sits at below ambient temperature at about 10C!




After 15 minutes of Prime95



After 30 minutes



After 45 minutes



And finally after an hour



As you can see the temps aren't actually bad considering this is under 100% load and is just a worst case scenario and would never even come close to this in real life situations.

Now is where I ask what I can do next using a peltier... As I said earlier I have ordered a 72w peltier which I intend to run at 12v off of molex and I have my old air cooler which I'll be using for my cooling of the hotside, other than this I have no idea what to do or how to use the peltier. If any one has any suggestions as to what I could use it for or how I could use it.

Thanks for reading, guys!

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Old 29-07-14, 10:58 PM
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Would it be possible for you to watercool the hot side of the TEC? The only potential problem I could imagine is trying to ensure good thermal contact between the two surfaces. I've always wanted to experiment with one of these things
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Old 29-07-14, 11:16 PM
RadeonHDx RadeonHDx is offline
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That's exactly what I was thinking but I was scared by the people who said that I could fry my chip if the TEC suddenly dies or something. I think to combat the good thermal contact you could just use thermal paste however I may be wrong as I'm not sure how well it would work in contact with a ceramic plate. And if you have a spare rig or some spare parts that you don't particularly mind losing then you'll be fine because a TEC is only about £2!

EDIT: Aswell as this when the TEC is running I'm sure I will be having problems with condensation. I'm not really aware of any 24/7 safe waterproofing method other than using something like neverwet which is still controversial is the exotic cooling community.
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Old 29-07-14, 11:58 PM
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Quote:
Originally Posted by RadeonHDx View Post
That's exactly what I was thinking but I was scared by the people who said that I could fry my chip if the TEC suddenly dies or something. I think to combat the good thermal contact you could just use thermal paste however I may be wrong as I'm not sure how well it would work in contact with a ceramic plate. And if you have a spare rig or some spare parts that you don't particularly mind losing then you'll be fine because a TEC is only about £2!

EDIT: Aswell as this when the TEC is running I'm sure I will be having problems with condensation. I'm not really aware of any 24/7 safe waterproofing method other than using something like neverwet which is still controversial is the exotic cooling community.
What the hell is a Hotside? And a TEC?

Generally to much thermal paste is bad.maybe thermal pads would a better option?

Oh and I do love that instead of becoming a victim of boredom you decided to get experimental!
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Old 30-07-14, 12:07 AM
RadeonHDx RadeonHDx is offline
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Originally Posted by Xrqute View Post
What the hell is a Hotside? And a TEC?

Generally to much thermal paste is bad.maybe thermal pads would a better option?

Oh and I do love that instead of becoming a victim of boredom you decided to get experimental!
A TEC is a peltier and it has 2 sides, a hot side and a cold side.

Quote:
It is a solid-state thermoelectric heat pump; Transfers heat from one side of the device to the other; If electric energy is applied, one side will heat up the other one will get cold If heat is applied unto one side and cold to the other side, electric energy will be generated; By reversing the applied current's polarity, the temperatures will also reverse.
I'm not totally sure what you mean by too much thermal paste? I was intending to use a pretty average amount of thermal paste and spreading it so that it covers the full face of the peltier for the most efficient use of the peltier and its functions.

Quote:
Oh and I do love that instead of becoming a victim of boredom you decided to get experimental!
Well it was this or rebuild my rig for no reason, having a big pot of water next to your pride and joy (no matter how mediocre the hardware actually is ) is actually quite terrifying ;D
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Old 30-07-14, 12:09 AM
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Quote:
Originally Posted by Xrqute View Post
What the hell is a Hotside? And a TEC?

Generally to much thermal paste is bad.maybe thermal pads would a better option?

Oh and I do love that instead of becoming a victim of boredom you decided to get experimental!
TEC or Thermo Electric Cooling is a very exotic method of cooling electronics, but it also comes with it's own inherent risks as it causes moisture to accumulate near the die. You can buy what is known as a Peltier module..



hope that sheds some light on the matter.

Good to have you back RadeonHDx
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Old 30-07-14, 12:15 AM
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TEC or Thermo Electric Cooling is a very exotic method of cooling electronics, but it also comes with it's own inherent risks as it causes moisture to accumulate near the die.
This was something I hadn't read about happening and certainly hadn't thought about myself, although now if I think about it that makes a lot of sense.

Have you got any suggestions as to how I could possibly go about water proofing my socket or board? I saw this earlier and thought it looked like a good idea however I'm not sure if it would work too well because I can see atleast 1 area where there are exposed points next to the socket.
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Old 30-07-14, 12:22 AM
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I think you've already mentioned Neverwet, but the only other thing I can think of would be to use LN2 Putty and just go nuts with it.



Or add in a separate block into your loop
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Old 30-07-14, 12:46 AM
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I should probably show you the pictures I was on about in the last post .




I was also wondering if I would need to put as much on as if I was doing something like DICE or LN2. For example, would I need to put some putty of the back of the socket? I would I be able to spray the CPU socket with neverwet or some kind of grease?
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Old 30-07-14, 12:54 AM
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Quote:
Originally Posted by Wraithguard View Post
TEC or Thermo Electric Cooling is a very exotic method of cooling electronics, but it also comes with it's own inherent risks as it causes moisture to accumulate near the die. You can buy what is known as a Peltier module..

hope that sheds some light on the matter.

Good to have you back RadeonHDx
In no way being an expert on the subject but it sounds somewhat similar to a phase changer.

Am I thinking along the right lines?

Gotta say this stuff is pretty cool I like learning about some of the more obscure approaches other enthusiasts experiment with.

And thanks the diagrams are quite informative

Quote:
Originally Posted by RadeonHDx View Post
This was something I hadn't read about happening and certainly hadn't thought about myself, although now if I think about it that makes a lot of sense.

Have you got any suggestions as to how I could possibly go about water proofing my socket or board? I saw this earlier and thought it looked like a good idea however I'm not sure if it would work too well because I can see atleast 1 area where there are exposed points next to the socket.
Obviously you wouldn't want this directly on your socket well at very least the contacts for the pins. But would you be able to use some sort of clear lacker as waterproofing. At very least it would work well in the PCB around the socket and it would probably be fine on the surrounding components that don't suffer from heat issues.
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