"Michael McNeil" wrote in message
om...
"IMM" wrote in message
...
Heat exchangers are not cheap. Many people make their own. It is
using
all the heat available. Having a small LPG genny, about 1.5 kW/hr, and
extracting all the heat is feabile. But you have to extract all of its
heat
and store it in a large thermal store. Then your house has to be run
mainly
on LV lights, run from batteries overnight with the genny off, and all
appliances run on gas (gas fridges are available). Washing machines,
etc,
have to be super energy efficient and hot and cold fill, with the hot
water
comming from the stored water. No appliance should draw more than 1.5
kW.
Now there are Combined Heat and Power Stirling units available.
http://www.whispergen.com
http://www.microgen.com/products1.html
Excellent sites well the first one was excellent except that it gave
no clear idea of the size weight and price.
Whispergen is available, so see a dealer.
Ditto the other one but I
couldn't get on with the way the
pictures loaded.
The Microgen is available next Spring.
I'd never heard of the stirling engine
http://www.stirlinginfo.com/
and am having difficulty with
the concept. They seem to be shooting themselves with the overbuild
quality as a fuel efficient small unit that wears out rapidly would
sell if it was cheap enough to supply a site. It could be without the
heat saving ad ons.
Stirling's do not wear out rapidly. They are super simple with minimum
components. The Microgen unit doesn't have a crank, with the piston being
the only moving part.
Of course the firms shown were designing a unit for specific purposes
not including what I would buy one for. If I was in the market for a
genny.
I wonder why they can't incorporate an oil way in the crancks and etc
the way that motorcycle 2 strokes do.
Why? It works on a different concept and operation to an IC engine. Get al
the stuff out your head about IC engines.
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