ok I'm having a little trouble understanding this, i understand that electricity flowing through it causes one side to heat and one side to cool, but how does it do this and with out electricity could you apply heat to one side and get cold from the other and visa versa?
@painta76 Without getting in details, the physics behind are described by The Peltier–Seebeck and Thomson effects. For engineers as myself its enough to know that peltier's are heat-pumps, the flowing DC current will cause a heat flow from cold to hot side, drawing heat away from one side and dumping on the other side and offcourse Joule's law apply also so the heat generated by the DC current will add to the hot side.
To summarize: the peltier element will create a temperature difference between the cold and hot size, to have the cold side for ex at: -20C the hot side must be kept at a relative low temperature which means dissipating the pumped heat+ Joule's heat. Without this the peltier will overheat and melt down, you can see that i used a PC cooler with low Rth.
@laszlofabian contined2: the effect is reversible by means of you apply temperature difference you will get a small current, thermocouples work this way.
If you apply heat to one side, you will just heat the peltier, nothing else will happen :)
hello. egy kerdesem lenne. ha kiveszek egy peltier modult egy kocsi-hutotaskabol, ami 12v illtv. 4amp kb, azt ra lehet kotni egy pc tapegysegre (nem eg le valami tap/peltier)?
Long version: Like I said, peltier is a heat pump, it can generate a temperature difference between the hot and cold side, while the hot side gets hotter because of the transferred energy and the module's own power dissipation, this heat is then dissipated trough a radiator, in the experiment I used an active cooler(with fan).
Short version: The heat is going to the ambient air via the cooler.
It's very important to understand: the peltier element is a heat pump, it moves thermal energy from one side to the other. On the hot side you still need to dissipate the transfered heat + its the heat generated by the peltier. My peltier can transfer 100W of heat and for this it needs 250W power which results in 350W of heat which needs to be dissipated.
lol, thats what i wanna find out too!!! if you could easily power a peltier cooler with a PSU, then it would be perfect to use to chill your computer.
Hmm, or probably have a heat sink on both sides, and use the cool side as a air conditioner, lol. that'll be a good computer cooler, but idk about condensation
ok, i just found out something. you'll need a strip of copper in between the peltier and the CPU. the reason is because Copper dissapates heat faster, and you'll need to probably apply thermal paste to both sides of the copper, GOOD LUCK!!! :D
Since it has no moving part(no pump) it is more reliable, but it has a very poor efficiency, for a total 100W cooling capacity, you must draw and dissipate 250W from the peltiers hot side.
Yes. Mine only is rated at 68W cooling capacity but it is rated to draw up to 15V at 8.5A (127.5W) - but even then it probably won't draw that much because as the peltier gets hotter the resistance increases.
if your reverse the leads does the cold side go hot???
billtsig96 1 month ago
@billtsig96 yes, by reversing the current(leads) you reverse cold-hot sides to, direct relationship with current flow.
Thats why peltiers are useless with AC current :)
laszlofabian 1 month ago
@laszlofabian thanks friend you are the best :)
billtsig96 1 month ago
ok I'm having a little trouble understanding this, i understand that electricity flowing through it causes one side to heat and one side to cool, but how does it do this and with out electricity could you apply heat to one side and get cold from the other and visa versa?
painta76 1 month ago
@painta76 Without getting in details, the physics behind are described by The Peltier–Seebeck and Thomson effects. For engineers as myself its enough to know that peltier's are heat-pumps, the flowing DC current will cause a heat flow from cold to hot side, drawing heat away from one side and dumping on the other side and offcourse Joule's law apply also so the heat generated by the DC current will add to the hot side.
laszlofabian 1 month ago
@laszlofabian continued:
To summarize: the peltier element will create a temperature difference between the cold and hot size, to have the cold side for ex at: -20C the hot side must be kept at a relative low temperature which means dissipating the pumped heat+ Joule's heat. Without this the peltier will overheat and melt down, you can see that i used a PC cooler with low Rth.
laszlofabian 1 month ago
@laszlofabian contined2: the effect is reversible by means of you apply temperature difference you will get a small current, thermocouples work this way.
If you apply heat to one side, you will just heat the peltier, nothing else will happen :)
laszlofabian 1 month ago
This has been flagged as spam show
hi I education a Bozok University in Turkey
cooling,photo, drawings the volume and accounts and the materials used Peltier Can you send me?
please....
denizbjk_19030@hotmail.com
gobek54 2 months ago
What do you do to prevent condensation?
ryansnider 9 months ago
@ryansnider lower the voltage
coolaidkiller101 8 months ago
Nice video! I was hoping it would do something like that.
jsusche22 1 year ago
Ha nincs valami szabalyzo aramkor akkor nem lesz semmi gond, amugy szerintem csak direkt ra van kotve es kesz tehat mehet, de azert nezd meg.
laszlofabian 1 year ago
hello. egy kerdesem lenne. ha kiveszek egy peltier modult egy kocsi-hutotaskabol, ami 12v illtv. 4amp kb, azt ra lehet kotni egy pc tapegysegre (nem eg le valami tap/peltier)?
suszterede 1 year ago
what i dont understand is where the heat energy is going
abulmagd3 2 years ago
Long version: Like I said, peltier is a heat pump, it can generate a temperature difference between the hot and cold side, while the hot side gets hotter because of the transferred energy and the module's own power dissipation, this heat is then dissipated trough a radiator, in the experiment I used an active cooler(with fan).
Short version: The heat is going to the ambient air via the cooler.
laszlofabian 2 years ago
would it be SAFE to cool a CPU like this? Is there any way to protect it from condensation and other potential PC killers?
panzerkiller13 2 years ago
it is completely safe... Cooler master uses one in their V12
OnionMad 2 years ago
anything special you have to do other than apply thermal paste+ heatsink?
panzerkiller13 2 years ago
ask me on joheke0818 @hot mail. com
(without spaces)
and i'll help you
OnionMad 2 years ago
It's very important to understand: the peltier element is a heat pump, it moves thermal energy from one side to the other. On the hot side you still need to dissipate the transfered heat + its the heat generated by the peltier. My peltier can transfer 100W of heat and for this it needs 250W power which results in 350W of heat which needs to be dissipated.
laszlofabian 2 years ago
@OnionMad v10 nub
Nirion2 2 years ago
ah, my bad
please don't hate me :(
OnionMad 2 years ago
put heat resistant glue around it
or use vaseline
alwinovich 2 years ago
lol, thats what i wanna find out too!!! if you could easily power a peltier cooler with a PSU, then it would be perfect to use to chill your computer.
Hmm, or probably have a heat sink on both sides, and use the cool side as a air conditioner, lol. that'll be a good computer cooler, but idk about condensation
Computerfreaq15 2 years ago
ok, i just found out something. you'll need a strip of copper in between the peltier and the CPU. the reason is because Copper dissapates heat faster, and you'll need to probably apply thermal paste to both sides of the copper, GOOD LUCK!!! :D
Computerfreaq15 2 years ago
is it possable to use this to cool down the xbox 360 heat sink.
teamkvs 2 years ago
not a chance
OnionMad 2 years ago
Since it has no moving part(no pump) it is more reliable, but it has a very poor efficiency, for a total 100W cooling capacity, you must draw and dissipate 250W from the peltiers hot side.
laszlofabian 2 years ago
Yes. Mine only is rated at 68W cooling capacity but it is rated to draw up to 15V at 8.5A (127.5W) - but even then it probably won't draw that much because as the peltier gets hotter the resistance increases.
AgentCROCODILE 2 years ago
This looks safer than watercoolers
AgentCROCODILE 2 years ago