At 5 k temp difference it's looking at a max efficiency of 2%, probably more like .6% efficiency. For a perfect black body it'd emit about 314.966 W/m^2 at 273 K so at maximum this technology could generate about 6.3 W/m^2. Not too shabby. Cool.
this post was submitted on 04 Dec 2023
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you could tell where this is going thermodynamically: space heatpump