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Question about TEC calculator

 Post subject: Question about TEC calculator
PostPosted: Fri Nov 14, 2014 11:01 am 
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Joined: Fri Nov 14, 2014 10:45 am
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First off, your calculator is AWESOME! That and your site has tremendously helped me understand TEC's better.

My question is about figuring out C.O.P when using multiple peltiers in series(electrically). I picked up 5 TEC1-12706's from ebay to play around with a solid state refrigerator. I plan on driving them from a 24V Power supply with all 5 peltiers in series(electrically). They would all be mounted side by side along a large copper block/heatsink style chiller like you sell on your website. An Arduino would be PWM controlling through a set of mosfets while watching a temperature probe mounted inside.

Here is where things get interesting. The purpose of this is for fermentation of beer. The temp probe will be in a thermowell reading the temp of approximately 5 gallons of beer in a plastic bucket.

I thought wiring them in series would be beneficial on the C.O.P. The amount of time to cool the liquid is not critical. During fermentation though, the yeast can generate quite a bit of heat, so I want to be able to accurately control the temps which is typically done through a heater and standard compressor refrigeration. I would like to simplify things since if heating is necessary (not typically) the polarity of the TEC's can be reversed to add heat back into the system.

How can I calculate the C.O.P if the TEC's are not in parallel? Are my TEC's grossly undersized for this type of application, or would wiring or controlling them in a different way be better?


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 Post subject: Re: Question about TEC calculator
PostPosted: Tue Apr 28, 2015 8:01 pm 
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Joined: Sat Nov 06, 2010 11:28 am
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kbailey204 wrote:
How can I calculate the C.O.P if the TEC's are not in parallel? Are my TEC's grossly undersized for this type of application, or would wiring or controlling them in a different way be better?



If you have 2 in series then that just 1/2 the voltage to each of them thats how i do it using my calculator. then you cna double the QMax and watts at the end to get totals


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