Quote:
Originally Posted by murray13
Using your numbers, I think of peltiers this way, they can 'pump' 400W of heat with a zero deg difference in temp OR they can 'pump' 200W of heat with about half of their rated temp diff. approx. 32 deg.
As an example, I am going to be using 20 50W pelts (1000W) running with about 120W of power applied to lower my approx. 250W heat load by about 15 deg C.
Hope that helps.
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Yes, I kinda understand what you're saying. But if I truly do understand then what your saying still doesn't really answer my question.
I've read that peltiers are not all the affcient. In fact they're most efficient at 50 percent load, anything higher than that, they start losing effciency of cooling capacity, even though it still cools to some degree.
Your comparison is between two different examples and wattages. I'm trying to compare the exact same amount of wattage, but the only difference between the two setups are:
1st Setup - (4) 100W Pelts with a 4"x4" heatsink and fan
2nd Setup - (1) 400W Pelt with same 4"x4" heatsink and fan
Also keep in mind, that the 400W pelt is the same size as 1 of the 100W pelt.
So my theory is that with the more surface area of the 100W pelts, it would cool down more efficiently than using that single 400W pelt with 1/4 of the area size.
Is that correct?