[extropy-chat] Greenhouse Power? (was A Grim Vision ...?)

[Keith Henson]

At 08:44 PM 4/15/2007 -0700, you wrote:
>Keith writes
>
> > Think about how hot it gets inside a parked car in the summer
> > and you will get an idea of how hard it would be to seal up a
> > greenhouse.  You could also look up the power bills for cooling
> > Biosphere II.
>
>Why doesn't this furnish a productive energy source?

It's not.

>That is, the
>temperature difference generated between such an enclosure and
>the outside sounds as though it could be useful.

Awful as it gets inside a closed car in the summer (lethal) it not enough 
temperature difference to extract much energy.  Look up a web page on 
thermodynamics.

Keith