Testing and comparing different Peltier coolers - Part 1- Introduction

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This is the introduction video of my video series where I am testing 5 different Peltier coolers:
TEC12703
TEC12706
TEC12708
TEC12710
TEC12715
I will measure several things. First, I measure the cold side temperature of each device at 50% of their rated maximum current (I call this Imax 50%).
Then, I measure the equilibrium temperatures at different currents, and from this, I obtain the Tmin, which is the lowest achievable temperature before the Joule heating kicks in. Above the current of Tmin, the Joule effect (quadratic) overpowers the Peltier effect (linear) and by further increasing the current running through the Peltier, we start to increase the temperature of the cold side. The third part of the test is that I apply a "thermal load" to the cold side in a form of another CPU cooler. The CPU cooler should transfer the heat towards the cold side of the Peltier. I monitor the cold side temperature of the Peltier with the thermal load applied to it and see how deep it goes.
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The other episodes of the series are in this playlist:
• Testing and comparing ...
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Опубликовано:

23 июл 2024

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Комментарии : 30

@paulpease1788 4 года назад

In the process I've been working on, the super fine mist on the hot side fins is really helpful lowering the hot side temperature as long as the dew point is at least 10C below ambient and the peltier still needs to be cooled to reach its maximum Delta T for that voltage and amperage combination. For example a heatsink that is capable of moving 100C (I will use temperature gradient rather than watts or joules/s because that's actually what we are shooting for is DeltaT) can move only 100C in 100% dew point. At a 43C environment it can never move more than 57C because it can't be less than the ambient temperature. A fan can help but it still can't be below ambient. In a 43C environment with a dew point of ~0C (0.00001C liquid water state) and the proper amount of water mist removing heat from the copper fins with airflow to promote evaporation, you can move a full 100C through the heatsink. The heatsink will even become cool to the touch as it will be colder than ambient if you need to remove less heat than that. You can now remove double the heat from the device. (There is some loss in the transfer from the water to the copper but I'm finding nothing affordable that is better than copper)

@CuriousScientist 4 года назад

This mist-thing sounds very interesting. Have you tried to disassemble the ultrasonic stuff from these humidifiers? I think that device could provide you with a very finely dispersed water droplets. I will take a look on it later.

@ZenInnovations 4 года назад

Thanks for the detailed testing.

@CuriousScientist 4 года назад

You are welcome! 2 new parts will be uploaded during the day. Stay tuned!

@paulpease1788 4 года назад

Clamping method is brilliant. Do you think the fan in the middle of the heat sink could be upgraded? This is a great test because I think you'll be adding a slight load to the cold side by adding the cold side heat sink and blowing room temperature air through it. That way it's a little less likely for ice to form a barrier between room temperature and the peltier. Due to the difference in specific heat of ice and air or water its more difficult to really see what a peltier can do to air temperature. In a dry climate try a very fine mist of water on hot side radiator. You can get below ambient.

@CuriousScientist 4 года назад

Thanks! I can remove the fan, but I do not know if there is any better. I haven't checked for a stronger fan yet, but this already creates a pretty nice airflow. I will try the mist later and I will also do some other tests, such as fan positioning, combination of fans. I am also working on a "standardized" test for these Peltiers, but that will be another series.

@Shahmeer_Ghambhir 3 месяца назад

Can i use 12715 pair of 10 peltier for ac Is this work?

@CuriousScientist 3 месяца назад

12715 pieces are a bit overkill.

@isidoromaich7226 4 года назад

Judging by this introduction the test process and the conclusion will be very interesting

@CuriousScientist 4 года назад

I hope it will be interesting. Today, I finished recording the test for the TEC12708, so probably I will be able to finish the whole series this week. But as I approach the larger Peltiers, they require more and more measurement points to cover the whole curve that I want to measure. So, it will take time. But, I already learned a lot during the tests. I will talk a lot, maybe it will be boring, but I think it can be useful too.

@isidoromaich7226 4 года назад

@@CuriousScientist Not boring at all, we appreciate you sharing all you had learned in the process.

@CuriousScientist 4 года назад

Thank you!

@ZenInnovations 4 года назад

Awaiting next part.

@CuriousScientist 4 года назад

Thanks! One part is uploaded right now. The next will be uploaded tomorrow, probably.

@Naveen27 3 года назад

Can you please suggest me a peltier model which is sufficient for a 15 gallons aquarium to bring down the temperature upto 22•C or lower. Ambient temperature around 30 degrees. I also have a cooling fan which can bring down 3 degrees. Without cut off and even if it takes 24hrs to reach that temperature it’s fine.

@CuriousScientist 3 года назад

Hi! Unfortunately, several things have to be considered so it is not that easy to just suggest a model. First, you can calculate how much heat you can remove by maintaining the 8°C temperature difference (30°C vs. 22°C) with different Peltier coolers (here I explain how to read performance charts: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-d8FY0jGFbZM.html ). Then, you need to calculate how much heat tries to enter the aquarium once you cooled it down to 22°C. So you know how much cooling power you will need to balance the "heat gain" (gain, because the heat will try to go _into_ the colder than ambient aquarium) of the system.

@Naveen27 3 года назад

@@CuriousScientist Thanks for your reply. I have similar heat sink & fan like yours. In your test 12708 at 5.25 amps is the maximum amps for maximum cooling for that module in your cooling system? So 5.25 amps is sufficient to get the maximum cooling capacity from 12708? Also 12709 is available will it work similar to 12708 in your system?

@CuriousScientist 3 года назад

It will work similarly or even a bit better, but one single Peltier cooler might not give you the desired results, I think.

@Naveen27 3 года назад

@@CuriousScientist 5 amps supply is enough for the 12708 peltier for maximum cooling?

@CuriousScientist 3 года назад

@@Naveen27 It depends on how well you cool the hot side of it. I tested the above mentioned Peltier, so check that video.

@ShahidKhan-rd1wj 4 года назад

Thank you sir for answering I don't know English very well but I thank you for your nice answering

@CuriousScientist 4 года назад

Your English is pretty good, don't worry. I am glad that my answer helped you!

@clickonlineit 4 года назад

👍👍👍

@CuriousScientist 4 года назад

Thanks!

@harrrytoool1391 3 года назад

This video doesn’t review petltier coolers. It pulls apart different ones. This is rubbish. One fault I can say with these is the freezing up of the cooling side leading to freezing the fan therefore making the cooling ineffective .

@CuriousScientist 3 года назад

Watch the whole series. It is clearly stated even in the title that this is the introduction. And if you find the video rubbish, you are always free to publish better ones on your channel.