Which power supply for this system?

[kalniel]

that won't cool the CPU. just the other side of the passive peltier

I see what you mean. I presumed the peltier wasn't insulating.

[cam1986]

It amazes me when people buy 1000 watt + PSUs thinking they must have one! 500w is more than enough for most systems. Just use a calculator to determine what your system requires and you will see that 1000 watt is massive overkill for the majority of people.

[me-yeah]

200w Pelrier coolers do exist, as you quoted, but they are designed for cooling, not for generation. They are not reciprocal devices as designed. And even if you could, you still can't get something for nothing. Basic thermodynamics.

any amount of generated power with a peltier inside of a copper block is better then having massive heatsinks like be-quiet dark rock pro 3 and other heatsinks alike,

[Jowsey]

This thread has made for a very ...amusing read. Many belly laughs were had!

[scaryjim]

This thread has made for a very ...amusing read....

I can't work out if it's epic trolling or epic obstinance. Definitely epic, though

[Jowsey]

I can't work out if it's epic trolling or epic obstinance. Definitely epic, though

I think part of it's charm is not knowing!

[peterb]

any amount of generated power with a peltier inside of a copper block is better then having massive heatsinks like be-quiet dark rock pro 3 and other heatsinks alike,

If its inside a copper block, both junctions will be at the same temperature and you won't generate anything

[peterb]

I can't work out if it's epic trolling or epic obstinance. Definitely epic, though

Epic ignorance of technology, physics and thermodynamics

I remember a similar thread some years ago when someone thought that replacing a heatsink with a Peltier device would remove the need for a cooling fan.

If this was such a good idea, why aren't all the mainstream manufacturers touting it "As the next great breakthrough"?

Answer - Because it won't work!

[KnightInd2000]

I too am looking for a cheap / good PSU for a system I sometimes leave on for a few days (for reasons I can't discuss). It has a very low end GPU and an old E6700 core 2 duo so will have a low power draw but I was looking for a PSU that was as efficient as possible, whilst being as cheap as possible, yet maintains a decent spec. I came up with this: http://www.scan.co.uk/products/550w-...n-atx-v231-psu
What do you guys think?

[peterb]

550W is probably far more than you need, but then you won't be putting the components under any stress.

You might want to consider this

http://www.scan.co.uk/products/300w-...-pci-e-erp2014

[me-yeah]

Epic ignorance of technology, physics and thermodynamics

I remember a similar thread some years ago when someone thought that replacing a heatsink with a Peltier device would remove the need for a cooling fan.

If this was such a good idea, why aren't all the mainstream manufacturers touting it "As the next great breakthrough"?

Answer - Because it won't work!

it does work, its in the video and a few others on youtube : https://www.youtube.com/watch?v=DHFGY32hV7w

its probably more down to, nobody would want to spend £200 on a heatsink, thermoelectric coolers would have to be patent free so all companies can jump on board and buy peltiers in massive bulk and make them cheaper

[peterb]

it does work, its in the video and a few others on youtube : https://www.youtube.com/watch?v=DHFGY32hV7w

its probably more down to, nobody would want to spend £200 on a heatsink, thermoelectric coolers would have to be patent free so all companies can jump on board and buy peltiers in massive bulk and make them cheaper

Oh yes, it works for cooling, as a heat transfer device, but you still need a heat sink and fan to take the heat away from the hot side, and you need a heavy duty power supply to operate it. So it is not a practical application except in perhaps one or two specialist applications. A heat pipe usually offers a more efficient passive solution to the problem. And this sub topic started on the basis of efficiency.

But you were talking about using one the other way round, using it to generate power from the otherwise waste heat, which won't to make a system more efficient. It's like connecting a light bulb to a solar cell and then using the light to illuminate the cell to generate the power to light the lamp to generate power.....

[pastymuncher]

I can't believe this thread is still going. The op's question was well and truly answered by post #10. Talk about a thread derailment!!

[kalniel]

I can't believe this thread is still going. The op's question was well and truly answered by post #10. Talk about a thread derailment!!

Well..

[jeromesm3]

I would recommend a Corsair AX860 for your build. You cannot have enough head room for PSU's

[me-yeah]

Oh yes, it works for cooling, as a heat transfer device, but you still need a heat sink and fan to take the heat away from the hot side, and you need a heavy duty power supply to operate it. So it is not a practical application except in perhaps one or two specialist applications. A heat pipe usually offers a more efficient passive solution to the problem. And this sub topic started on the basis of efficiency.

But you were talking about using one the other way round, using it to generate power from the otherwise waste heat, which won't to make a system more efficient. It's like connecting a light bulb to a solar cell and then using the light to illuminate the cell to generate the power to light the lamp to generate power.....

you don`t need to power a peltier, if a 200 watt 13a peltier can generate 200 watts from 63c, like in the spec`s of the wholesale website page, then 200 watts back into the PSU loop would be a great deal better, then needing a gold or platimum PSU, or recharging your battery in a laptop

if you had input plugs for heat sinks on intelligent PSU`s, PSU`s can "buffer" peltier engergy and take from the mains lead what the PSU needs ontop