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User Info LOL..... Not New and Stupid; entered at 2019-05-15 15:59:43
Tickerguy
Posts: 157213
Registered: 2007-06-26
Yep.

They're not bad for what they are; being solid-state you can bash them around without much concern and they're reversible, so if you have a cool place you can keep things warmer. Their delta between hot/cold can reach 50F but efficiency goes to Hell at wider variations; 30F is more-reasonably expected. You CAN "stack" them to get better differentials but at the cost of (even much worse) efficiency, if you really need to.

But as a replacement for conventional mechanical refrigeration? Only if the power is literally FREE, and it never is!
2019-05-15 15:59:43