Posted by Frank Scrooby on January 25, 2008, 11:35 am
I'm not smart enough with fuel cell terminology and technology to decide
whether this could work or whether its some elaborate scam. The credentials
of the inventor should be above reproach but how often has that worked in
Any comments welcome.
Thanks and regards
Posted by Robert Scott on January 25, 2008, 1:18 pm
According to that Popular Mechanics article, the efficiency of 60% is based on a
temperature of 600 degrees C (1080 F), with proportionally lower efficiency at
lower temperatures. Apparently this limit is imposed by the theoretical maximum
in the Carnot thermodynamic cycle. So at 300 degrees (assuming 0 deg ambient),
the efficiency would be only 30%, so now we are getting closer to the PV range.
In any case, this would do little in a typical flat-plate collector without
concentrating reflectors. But PV panels can work at low temperature. I say PV
is still better, even if this does work as advertized.
Posted by J. Clarke on January 25, 2008, 1:28 pm
Frank Scrooby wrote:
Sounds like he may have come up with something new. I suspect that
until design rules are developed it's going to be a bear to analyze.
to email, dial "usenet" and validate
(was jclarke at eye bee em dot net)