Hybrid Car – More Fun with Less Gas

Electricity from heat (continued) - Page 3

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Posted by harry on April 6, 2009, 7:33 pm



Apparently Volkswagen have a 600W thermopile that runs off the exhaust
of a car. The idea is to replace the alternator with this device & so
improve the overall efficiency of the engine by eliminating parasitic

The efficiency is around 5-10% which compares well with steam engines
hat is the efficiency of a solar photovoltaic panel for comparison?
Only 5-15% at present mostly because the panel only converts part of
the spectrum of sunlight.  Apparently 50% efficiencies are
theoretically possible.

Some more interesting stuff here:-

What I would like is a short section of chimney to go on my stove that
generated electricity!

Posted by Eeyore on April 7, 2009, 2:14 am

harry wrote:

I don't think they do. Provide a cite if you're going to make extravagant claims.

There are people here who know what they're talking about. YOU don't.


Posted by Bruce in alaska on April 7, 2009, 4:13 pm

There was an experimental unit that was mounted on a Diesel 18 Wheeler
that was designed to produce 1Kw... but really only did 750 watts, and
had some other problems... and then they ran out of money.... Unit OEM
Costs were in the $-4KUS range....

Bruce in alaska
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Posted by harry on April 7, 2009, 6:46 pm


Just follow the link.  Brain in gear before fingers.

Posted by Bruce in alaska on April 7, 2009, 4:10 pm
 In article

You can build one... It will only cost your about $K just for the 600
Watt Thermopile....

Bruce in alaska
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