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help with peltier chiller? - Page 3

post #21 of 81
10/27/12 at 4:36pm
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if im right im new to this biggrin.gif
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post #22 of 81
10/27/12 at 5:15pm
If it's an entirely closed water loop, and the chiller is enough to chill the load intended, the water temperatures will eventually even out. But when water goes over a TEC or some type of cooling surface, it doesn't drop temperatures of the water drastically unless it has a very low flow rate across it. This is the reason it shouldn't matter where you put a chiller in your loop; eg: Before or after the CPU. You usually just put the chiller before the CPU because the temperature will be lower, even if it is a very small amount (depending on the block design).

Water Temp In vs Water Temp Out
High Flow Rate: Low Temperature Sway
Low Flow Rate: High Temperature Sway
Quote:
Originally Posted by Nastroglide View Post

Sandwiching tec's between 2 waterblocks is never going to be efficient. Real life chillers don't work that way.

Using a CPU waterblock isn't the best design of a chiller because is designed to get all the water to the center of the copper plate. That's not to say no CPU Waterblock will do. Ironically enough, the poorly designed waterblocks usually cool most of the copper surface evenly. Basically every chiller made by Mindchill is a TEC Sandwiched between a waterblock, it's just a specifically designed waterblock.
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post #23 of 81
10/27/12 at 5:28pm
I'm not trying to start a debate, but you're kind of missing my point. My chiller is designed after real life designs from chillers that I work on. I can go through the design and explain it, but I'm pretty sure that won't matter to ppl who are stuck on their own ideas. And that's perfectly ok, not saying your designs don't work. They certainly look cool and are polished, and you guys are definitely more knowledgeable about tec's than me.

I will explain that I tried to make the simplest chiller I could and I think I have. I'm still working on making it even simpler than it is now and better.

I also can't help but point out that I only have to use 1/4" tubing and 3 corsair H80's to achieve 0c idle and 53c full load (3hrs), and 580 watts max draw...
Edited by Nastroglide - 10/27/12 at 7:16pm
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post #24 of 81
10/27/12 at 7:50pm
From what I can see your loaded temps aren't but a few degrees better than a good custom water loop.

2 of my chillers will cool a loaded ivy bridge much better than your design, with half the wattage used.

I've bitten my tongue with your chiller build, because I love to see people experiment and I think its great to see people doing projects like yours.
Edited by Mindchi|l - 10/27/12 at 7:54pm
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post #25 of 81
10/27/12 at 8:06pm
Thread Starter 
id rather have the simple chiller over a weird waterblock type one the simple one just needs a bit of tuning and that will get good temps smile.gif but you two have your own designs and i respect both of them but simpler and cheper wins for me tongue.gif
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post #26 of 81
10/27/12 at 8:16pm
See, this is what I didn't want to happen. I'm still developing my whole idea, and greatly appreciate your input Minchill and krow and anyone else that had any. I wasn't trying to offend or hurt anyone's feelings.

Please! Don't bite your tongue, I do appreciate your input as you know way more than I do about tec's. If you don't mind me asking, what is your experience when it comes to chillers?
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post #27 of 81
10/27/12 at 9:15pm
Its all good.

I understand what your trying to do if your coming from a phase change type chiller, a little backwards maybe as the copper coils would be used as the evaperator and the reservoir would be used to buffer the temperature dt at low load conditions so that you don't short cycle your compressor as its either full on or full off like this.



Generally a tec chiller can be varied in cooling using a controller and you don't have the problems associated with a refrigeration compressor.

The only reason I can see for using a reservoir for energy storage/buffer is if you were doing short benching with inadequate tecs.

I'm assuming your not talking about absorption chillers or anything other than compressor phase chilling.

I've seen your type setup in solar heating more often as you use the water/storage reservoir as a way to store heat and then use the copper coils as a liquid/liquid exchanger to move the heat from your solar panel to storage and from storage to your home heating system similar to this.


Edited by Mindchi|l - 10/27/12 at 9:51pm
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post #28 of 81
10/27/12 at 9:47pm
Nope, nothing like that at all. Yes, to your first paragraph though.

Now I'm really interested in your line of work.
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post #29 of 81
10/27/12 at 9:56pm
Quote:
Originally Posted by Nastroglide View Post

Nope, nothing like that at all. Yes, to your first paragraph though.
Now I'm really interested in your line of work.

re-read, I may have edited.

I'm just giving examples of how a system using a storage/buffer system is generally used (your design)

1) for buffering a refrigerant compressor against low load short cycling.
2 ) for storing heat

Neither would apply to tec chillers.
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post #30 of 81
10/28/12 at 9:23am
Quote:
Originally Posted by Mindchi|l View Post

1) for buffering a refrigerant compressor against low load short cycling.
2 ) for storing heat

Not how it works. Does water flow directly through your "cold blocks" or is there a flow design in them? Maybe we should start a new thread or pm.
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