[Digestion] small generators - Stirling engines (Warren Weisman)

[Warren Weisman]

Cezar, 

Awesome, thanks. I will check out the group and see
where they're at. They use a Stirling engine at the
wastewater treatment facility just north of me in
Corvallis, Oregon. A 55 kW Stirling genset they got
from Germany. One of the engineers told me biogas is
excellent for Stirling engines because it eliminates
the variable engine timing with the CO2. 

He said it gets about twice the fuel economy of an
internal combustion engine and it has so many less
moving parts they're much cheaper and easier to
maintain. 

The flue gas can be used to heat water for CHP. Plus,
it makes less noise than an electric sewing machine,
so if your neighbor could be producing 10 kW of power
and you'd never hear it---it puts power production
inside city limits. 

--- Cezar T <blimpyway at yahoo.com> wrote:

> Warren,
> 
> Check out this discussion group:
>
http://tech.groups.yahoo.com/group/HotAirEngineSociety
> 
> Alot of people there are discussing this issue and
> they are planning to design and make something
> usefull
> for home power generation. Currently there are
> almost
> no commercial nor DIY engines on this topic, except
> mabe expensive ones like WhisperGen's CHP
> http://www.whispergen.com/
> 
> And no they do not heat water, the flame directly
> heats the hot side of the engine and it needs to be
> quite hot - around 1000 F, or 550C - for reasonable
> efficiency and power.
> 
> -----
> 
> Why not burning the biogas in a modified gasoline
> engine? 
> 
> regards,
> cezar 
> 
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----------------------------------------------------------------------
> > 
> > Message: 1
> > Date: Tue, 1 Apr 2008 20:15:21 -0700 (PDT)
> > From: Warren Weisman <weiswar at yahoo.com>
> > Subject: [Digestion] small generators - Stirling
> > engines
> > To: digestion at listserv.repp.org
> > Message-ID:
> > <818469.24386.qm at web62408.mail.re1.yahoo.com>
> > Content-Type: text/plain; charset=iso-8859-1
> > 
> > 
> > Hi, all, 
> > 
> > Does anyone have experience with running Stirling
> > engines with biogas? Could you give an idea of
> > typical
> > fuel use? Were you heating the engine directly, or
> > heating water to run it? 
> > 
> > Warren Weisman
> > USA
> > 
> > 
> >      
> >
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