> There's space for more sophisticated trickery, trying to minimize waste by reusing everything as part of some process elsewhere. But the net entropy still has

> There's space for more sophisticated trickery, trying to minimize waste by reusing everything as part of some process elsewhere. But the net entropy still has to grow, so the main question is the same as it always has been: where do you dump waste heat? Not OP, but wouldn't the "ideal" be to pull any excess heat (energy) out of the interior air, and use it first for electricity-needs in a home like phones, toasters, etc (which generate heat). That heat will eventually be re-captured by the heat-extractor, and can be recycled - any excess heat can still be "dumped" outdoors, and "ideally" the energy required to "move" that heat outdoors is first pulled from the spare-heat of inside. Obviously the big question in this scenario is how to convert heat into electricity, without a temperature differential. AFAIK we haven't figured this out.