Re: Using nuclear power to make renewables and a hydrogen economy cost effective

From: Don Lancaster (don_at_tinaja.com)
Date: 10/31/04 

Date: Sat, 30 Oct 2004 20:10:03 -0700

charliew2 wrote:
>
> Don Lancaster wrote:
> > charliew2 wrote:
> >>
> >
> >>
> >> Again, Dave, I think you're wasting your time here. Ian is probably
> >> not going to understand that the efficiency is strictly dependent on
> >> the source and sink temperatures, and has nothing to do with heat
> >> exchange, unless that heat exchange is actually a heat leak to the
> >> environment.
> >>
> >>>
> >>> ************* DAVE HATUNEN (hatunen@cox.net) *************
> >>> * Tucson Arizona, out where the cacti grow *
> >>> * My typos & mispellings are intentional copyright traps *
> >
> > A more correct statment would be that the BEST POSSIBLE efficiency is
> > strictly ....
>
> Agreed. I thought of this, but wasn't quite as forceful in stating it.
>
> >
> > The rest of the efficiency is crucially dependent on heatsink
> > characteristics.
> > It is trivially easy to get most of the delta-T drops across the input
> > and output thermal interfaces, leaving absolutely nothing (and often
> > LESS) for Carnot to work with.
> >
> > Especially with low delta-T schemes.
> >
> > For instance, it is trivial to build a Peltier cooler with a 20 degree
> > drop across itself and a 40 degree rise across its heatsinks.
>
> Can you give me a link that has a good example of the low delta-T schemes?
> I'm not familiar with a Peltier cooler, and a picture would help enormously.

http://www.tinaja.com/glib/hack68.pdf plus other links on my website.
Plus, of course, anything OTEC. 

-- 
Many thanks,
Don Lancaster
Synergetics   3860 West First Street  Box 809  Thatcher, AZ 85552
voice: (928)428-4073 email: don@tinaja.com   
Please visit my GURU's LAIR web site at http://www.tinaja.com

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