Which power supply for this system?

[scaryjim]

... if a 200 watt 13a peltier can generate 200 watts from 63c ...

It can't. You're reading the specs wrong. Sorry.

[me-yeah]

It can't. You're reading the specs wrong. Sorry.

doubt it, you can have a basic video of how a peltier works https://www.youtube.com/watch?v=5j-0cPHlayg

[Arthoin]

So far, I have had no problems with my EVGA Supernova G2 750W. I reckon that all are built similarly & the reviewes were great. And the price is also nice, compared to other brands.

[Disturbedguy]

doubt it, you can have a basic video of how a peltier works https://www.youtube.com/watch?v=5j-0cPHlayg

I'm not going to sit and pretend that I know anything of all this peltier stuff being discussed. But you haven't posted anything factual that backs up what you are saying, all you have done is post links to YouTube videos.

I think what zak said in another thread -

It's time please me-yeah, for your posts to improve in quality please, with more fact and less imagination.

Stands here. You've posted nothing

[ik9000]

If I had time I'd add a speech bubble. "Perpetual motion is physically impossible"

[scaryjim]

doubt it, you can have a basic video of how a peltier works https://www.youtube.com/watch?v=5j-0cPHlayg

Excellent - what are you planning on powering at 0.1v? Or had you not paid attention to how little electricity you actually generate from a Peltier?

No-one is debating that you can use the thermoelectric effect to generate electricity. But it doesn't work how you seem to think. You won't even generate enough DC power to run a fan, and your CPU will rapidly overheat. If you google properly you'll find thermoelectric lamps: they take the heat from burning a tea light (which is a fair bit hotter than you'd want to run your CPU) and use it to power a handful of LEDs - maybe a few watts at most. Plus they need a huge heatsink to cool the top surface of the peltier and maintain the temperature gradient.

OTOH if you can prove that a peltier on top of a warm CPU can generate 200W, I'll happily apologise to you, and also point out that you've solved the world's energy crisis in one fell swoop. That'll be quite the feather in your hat

EDIT: in keeping with the level of the conversation: you might as well power your computer with potatoes: https://www.youtube.com/watch?v=noI7TmspMrM - they produce more electricity than warm Peltiers

[me-yeah]

body heat is`nt 63c, i can`t prove it, im not going to spend £30 on a peltier, but logic tells me 63c is 40% lower then fire temperature most videos on youtube use to charge mobile phones etc

63c is normally what a cpu in a PC is running around too

[Jowsey]

but logic tells me 63c is 40% lower then fire temperatureo

Tell Logic to do one because he isn't doing you any favours mate.

[me-yeah]

Tell Logic to do one because he isn't doing you any favours mate.

you have too look around, and use some logic, there are peltiers, TEC peltiers and TEG peltiers, during winter with no central heating on a CPU in a PC with aircooling can reach 30-36c, the rest of the year the CPU is normally running around 60c

[Disturbedguy]

you have too look around, and use some logic, there are peltiers, TEC peltiers and TEG peltiers, during winter with no central heating on a CPU in a PC with aircooling can reach 30-36c, the rest of the year the CPU is normally running around 60c

What a wildly inaccurate comment...How can you sit there and say that? There are so many factors that can effect the temperature of a CPU, cooling, dust, airflow to name but a few. No two PC's are exactly the same..sorry but you're just throwing around random, rubbish comments now.

And how does this -

but logic tells me 63c is 40% lower then fire temperature most videos on youtube use to charge mobile phones etc

relate to what was being discussed in anyway?

[DDY]

I know this is derailing the thread, but I'm actually working on a project using TECs to recycle the waste power from a PC CPU, see;

I'm actually using two TECs;


-40°C, if they're not generating power of course;


Now, for the real test. A Pentium 4 Prescott.


WOW!


Now if you could just back my Kickstarter project here.

[ik9000]

LOL. it's funny how even a peltier at -40c still smells of BS isn't it!

[Haxorus]

I think there's a CoolerMaster 650w psu going for quite cheap around £50

[antonisk]

Yes exactly my thoughts, maybe just a gold or platinum badged 550 psu. I you do go bronze like me you will be wondering why you never went the extra mile.

[me-yeah]

And how does this - relate to what was being discussed in anyway?

cheap PSU`s and efficiency and badges, its not hard to make a circuit with a cheap peltier if you look around to power fans or your water block using heat from your CPU

if a company actually made a thermoelectric cooler for the retail market, it would probably cost around £200

[peterb]

cheap PSU`s and efficiency and badges, its not hard to make a circuit with a cheap peltier if you look around to power fans or your water block using heat from your CPU

if a company actually made a thermoelectric cooler for the retail market, it would probably cost around £200

I've watched the videos - using a candle as a heat source (some 600C and a cold junction at zero, the poster is generating very little power.

However, rather than watch videos showing experiments with little scientific method, you might want to read this paper https://www.google.co.uk/url?sa=t&rc...MbYkZtnyXmrGfw

which measures the efficiency of a thermoelectric generator, and the output at varying temperature gradients under laboratory conditions. Then perhaps you will understand why the proposal is of little practical benefit.