The efficiency of Peltiers in regards to heat moved per watts spent is actually kind of crap. And the hotter their hot side gets, the worse that efficiency becomes. Overclockers attempting (often in vain) to use them for sub-ambient-temperature cooling for computer components have known this for a long time.
Even a dinky compressor based refrigerant system is more efficient at moving heat than a Peltier of equivalent-ish total wattage.
That’s before getting into the details specific to the crappy tiny Peltier cooler in the video, which runs at 100% of its duty cycle all the time and has functionally zero insulation, unlike an actual refrigerator.
I have a Peltier based car cooler, and that’s basically the only use case for these things that makes sense: Short term storage of things where the actual temperature achieved isn’t that critical, and which needs to remain light enough that you can easily carry it. Basically, just treat it as a regular cooler that if you play your cards right you won’t have to add any ice to.
Overclockers attempting (often in vain) to use them for sub-ambient-temperature cooling for computer components have known this for a long time.
aren’t you still limited by ambient air temp because the hot side of the Peltier needs to be cooled by air anyway?
I have a Peltier based car cooler, and that’s basically the only use case for these things that makes sense:
I don’t really even see the point of that to be honest. if we’re talking short periods anyway, a nicely insulated cooler with ice packs (cooled by a heat-pump freezers) is way better imo.
Planing a cooler presentation when I get my Redneck Business channel going. I’m stunned by how ignorant people are on the subject. My $100 Lifetime cooler keeps cold exactly as long as a $500 RTIC or Yeti. And those are only for if you need multiple days of cool. I have a dozen coolers for various needs, and most are Igloos I got from the thrift.
The efficiency of Peltiers in regards to heat moved per watts spent is actually kind of crap. And the hotter their hot side gets, the worse that efficiency becomes. Overclockers attempting (often in vain) to use them for sub-ambient-temperature cooling for computer components have known this for a long time.
Even a dinky compressor based refrigerant system is more efficient at moving heat than a Peltier of equivalent-ish total wattage.
That’s before getting into the details specific to the crappy tiny Peltier cooler in the video, which runs at 100% of its duty cycle all the time and has functionally zero insulation, unlike an actual refrigerator.
I have a Peltier based car cooler, and that’s basically the only use case for these things that makes sense: Short term storage of things where the actual temperature achieved isn’t that critical, and which needs to remain light enough that you can easily carry it. Basically, just treat it as a regular cooler that if you play your cards right you won’t have to add any ice to.
aren’t you still limited by ambient air temp because the hot side of the Peltier needs to be cooled by air anyway?
I don’t really even see the point of that to be honest. if we’re talking short periods anyway, a nicely insulated cooler with ice packs (cooled by a heat-pump freezers) is way better imo.
Planing a cooler presentation when I get my Redneck Business channel going. I’m stunned by how ignorant people are on the subject. My $100 Lifetime cooler keeps cold exactly as long as a $500 RTIC or Yeti. And those are only for if you need multiple days of cool. I have a dozen coolers for various needs, and most are Igloos I got from the thrift.