I would think the middle of the tec would get cooler than the outside. Plus it seems that there may not be any cooling on the corners. Those corners would accumulate heat, then disperse it to the entire unit, including cover. This would end up taking away from overall performance to my understanding. Just a thought.
So I agree with you GTA. If your pelt cooling, I would think a block that provided flow across all corners and middle evenly may perform better.
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