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This is my shiny new excessively over-engineered heat exchanger for my ruby laser. There are TECs under each of the six CPU fans, and water circulating in the plexiglass block they are attached to. The sides (under the TECs) are stainless steel, so its compatible with deionized water, so it can go in the primary coolant loop.
This is just kludged together for testing. The blue tape is on the heat sinks because reflective metal fools an IR thermometer.
This is just kludged together for testing. The blue tape is on the heat sinks because reflective metal fools an IR thermometer.
Category Photography / All
Species Unspecified / Any
Size 1225 x 919px
File Size 147.3 kB
What kind of temperature differential do you see with those Peltiers? From abient? Did you hear they discovered a way to make a more efficient one by microwaving some component used in their manufacture... Heard this a few years ago, and am interested to see if they have implemented it into mass manufacture, yet.
P.S. I am fascinated by Peltier junctions. Used to work in the test equipment industry (Used test equipment) and we got on a really thick lab TEC. I was like... "What's this?" I plug it in, and one side gets icey and the other gets hot. You should have seen my eyes. O.o
I am interested in using them for air conditioning purposes, say, inside of a vehicle.
P.S. I am fascinated by Peltier junctions. Used to work in the test equipment industry (Used test equipment) and we got on a really thick lab TEC. I was like... "What's this?" I plug it in, and one side gets icey and the other gets hot. You should have seen my eyes. O.o
I am interested in using them for air conditioning purposes, say, inside of a vehicle.
Peltiers make lousy air conditioners...
I observed a delta of 40 degrees F, but that was getting too close to their absolute max temp rating, I believe they are rated for more. But the real question is how much energy can they move. These are rated for 74 watts each. And they take about twice that much energy to do it. And /all/ that energy ends up on the heatsink (the 74 Watts of cooling plus 140 Watts of electricity). And if they exceed about 150 degrees F, they melt. My heatsinks /suck/ I'm running them well below rated output to stay below what the heatsinks can handle.
So, peltiers are great for being silent, and if you need around 300W of cooling are OK. But if you need more than about 500W of cooling a compressor and freon is going to be much more efficient.
I observed a delta of 40 degrees F, but that was getting too close to their absolute max temp rating, I believe they are rated for more. But the real question is how much energy can they move. These are rated for 74 watts each. And they take about twice that much energy to do it. And /all/ that energy ends up on the heatsink (the 74 Watts of cooling plus 140 Watts of electricity). And if they exceed about 150 degrees F, they melt. My heatsinks /suck/ I'm running them well below rated output to stay below what the heatsinks can handle.
So, peltiers are great for being silent, and if you need around 300W of cooling are OK. But if you need more than about 500W of cooling a compressor and freon is going to be much more efficient.
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