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4 x 40mm TEC Chiller

post #1 of 7
Thread Starter 
I'll have this in next for testing as well as a few other things I have been working on.





    
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post #2 of 7
I imagine this thread will not be updated as all past+present+future work is now being incorporated into your ''4 x 50mm TEC chiller Part III'' thread.
(BTW, the title should be 4x50mm...not 4x40mm?)
post #3 of 7
Thread Starter 
I am looking at running 4 x 40mm, 4 x 50mm, and 4 x 62mm setups and showing the performance differences.
    
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post #4 of 7
Hello,

Are you going to post relative power consumption numbers along with cooling performance results? I think that'd be a worthy addition.

We all know that running droves of TECs will allow a higher COP, but it'd be useful to see what you were able to achieve with these compact, stacked setups at different voltages and heat loads.

I'd think that somewhere around 25C air-water Delta, it'd be more efficient to use phase-change.

What do you think, Muffy? Have you found any sort of rough equivalence point (temperature Delta) yet regarding the efficiency of optimized parallel undervolted TEC-chillers vs relatively inexpensive High EER (11 or so) converted A/C chillers in the 5-8K BTU capacity range?

I made that comparison because most phase-change chillers would likely employ converted A/C units at a cost of no more than $200 + modification materials and temp control. Whereas a TEC-chiller project would have to be expensive in order to achieve worthwhile cooling results with comparable efficiency.
post #5 of 7
Quote:
Originally Posted by Archmage View Post
Hello,

Are you going to post relative power consumption numbers along with cooling performance results? I think that'd be a worthy addition.

We all know that running droves of TECs will allow a higher COP, but it'd be useful to see what you were able to achieve with these compact, stacked setups at different voltages and heat loads.

I'd think that somewhere around 25C air-water Delta, it'd be more efficient to use phase-change.

What do you think, Muffy? Have you found any sort of rough equivalence point (temperature Delta) yet regarding the efficiency of optimized parallel undervolted TEC-chillers vs relatively inexpensive High EER (11 or so) converted A/C chillers in the 5-8K BTU capacity range?

I made that comparison because most phase-change chillers would likely employ converted A/C units at a cost of no more than $200 + modification materials and temp control. Whereas a TEC-chiller project would have to be expensive in order to achieve worthwhile cooling results with comparable efficiency.
i can't remember what TEC's he was using but is this what your looking for ?

oh and what Phase change chillers are $200 with a delta of 25 with a load of 200 ish ?


LL
Edited by Ultrasonic2 (muffy) - 10/26/10 at 8:12pm
post #6 of 7
That's even better. That program of yours is great Muffy - thank you. Those results are better than expected. I didn't realize you could achieve a 25C delta at below 6V per TEC.

I'll have to play around with that program for a while.

As for a $200 phase-change setup: I'm merely referring to converted A/C chillers.

http://www.newegg.com/Product/Produc...82E16896767748 - I'm interested in this 5200 BTU unit which can be found for $130-$180 (Walmart had it last I checked). I was thinking about using it as a dual-role A/C and water-chiller (I have a design configuration in mind).

However, some people do this inexpensively. I've seen build logs wherein people have assembled used A/C chillers for as little as $50, including materials.

Edit: Hmm... your website has Beta 2.4, but your screenshot shows Beta 3? Am I using the wrong download link for your TEC simulator?

Edit 2: hehe... now playing around with the numbers, I realize that I can use a TEC-chiller as an air-conditioner as well if I just duct the hot-loop air outside (or run the line through the wall). I have until late Spring or early Summer to think about this (when I'm going to want A/C).

Edit 3: Sorry, I realize I'm de-railing the thread. That's the last of it. But I DO WANT to see real world numbers from this project
Edited by Archmage - 10/26/10 at 11:38pm
post #7 of 7
5200 BTU's is 1500 watts of cooling so it more powerful than the potential 974 of this, at 27Th though at 50cTh it's 1120

In theory his chiller could move 200 watts to a COP of 7 as a matter of interest

The app is only accounting for the TEC it's self and doesn't include any loss on each side so actual results aren't as good. i just finished beta 3 yesterday so it hasn't been up loaded if you PM me with a email add i'll send it to you

price comparison i find a bit hard. we commonly have phase change guys coming in here saying they their units for 5$ and a packet of gum. and after investigating it's not really the truth as they commonly buy second hand units and use stuff lying around and never add their time into the cost factor. Where as TEC units like this you buy BRAND NEW and plug in and your done.

also TEC systems should be considered as an upgrade to an existing water cooling loop and is NEVER in my opinion in direct competition to phase change units
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