[ExI] Bosch exits Solar business in Germany

[Adrian Tymes]

On Fri, Mar 29, 2013 at 11:33 AM, spike <spike at rainier66.com> wrote:
> Thanks, I will look it over.

Google on "graphene membrane water" if you want to find more.
Most of them are, of course, unfortunately concealed behind
paywalls or not very technical.

> You
> would agree the half and half barrel is lower entropy than you started with,
> ja?

This is true.  A pressure differential would indeed be a viable
source for the required energy, but in theory the absolute
physical limit is "any" differential, not necessarily a large one,
just so long as some energy can be harvested.  (Of course,
with really small differentials, one would get really small water
purification rates.)

The advance here, if indeed there is one, would be in boosting
the efficiency and thus lowering the minimum differential.