[Gasification] Question: Connecting a gasifier to a microCHPunit

[Phil Marsh]

Tom:

You are correct. The $3900CDN includes stirling, heat exchanger and
generator head. From heat exchanger hot gas inlet backwards would be your
business. I'm not sure what the Gasifier would cost.

Phil Marsh
Marsh Bros.
(250) 569-2795

-----Original Message-----
From: gasification-bounces at listserv.repp.org
[mailto:gasification-bounces at listserv.repp.org] On Behalf Of Tom Miles
Sent: September 2, 2007 7:46 PM
To: 'Discussion of biomass pyrolysis and gasification'
Subject: Re: [Gasification] Question: Connecting a gasifier to a
microCHPunit

Phil,

Thanks for the report. Is that CDN 3900/kW (USD 3700/kW)just for the
Stirling and heat exchanger and so the CDN 5,300/kW (USD $5,000/kW) gasifier
is extra?

Thanks

Tom

> -----Original Message-----
> From: gasification-bounces at listserv.repp.org [mailto:gasification-
> bounces at listserv.repp.org] On Behalf Of Phil Marsh
> Sent: Sunday, September 02, 2007 6:28 PM
> To: 'Discussion of biomass pyrolysis and gasification'
> Subject: Re: [Gasification] Question: Connecting a gasifier to a
> microCHPunit
> 
> Tom & List:
> 
> I just finished meeting with Lars Jagd, CEO of Stirling Danmark. They
> are
> considering moving into the Canadian and US markets but the decision is
> not
> yet final as the incentive to operate (green electricity price) in
> Europe is
> much greater. The current price for their stirling engine works out to
> about
> $3900 CDN per KW but they hope to cut that price in half over the next
> two
> years. That may be ambitious or maybe not. Their current machine is in
> the
> 35Kw range. With combined units they are not planning to go above 150Kw
> in
> the near future. They need a gas temperature in the 1200 to 1300C
> range,
> this can give them efficiencies in the 25% range but the heat exchange
> materials are very expensive, thus the high cost.
> 
> If you can afford the investment, or can't afford not to, these units
> might
> be better suited to topping on an IC engine generator where in theory
> the
> fuel (exhaust gases) are free. If your electricity price is good and
> the
> equipment reliable and maintenance free I think an economic case could
> be
> made.
> 
> 
> 
> Phil Marsh
> Marsh Bros.
> (250) 569-2795
> -----Original Message-----
> From: gasification-bounces at listserv.repp.org
> [mailto:gasification-bounces at listserv.repp.org] On Behalf Of Tom Miles
> Sent: September 1, 2007 9:41 AM
> To: 'Discussion of biomass pyrolysis and gasification'
> Subject: Re: [Gasification] Question: Connecting a gasifier to a
> microCHPunit
> 
> If you search the gasification website for stirling you get:
> http://gasifiers.bioenergylists.org/search/node/stirling
> 
> Also select the small/microCHP tab:
> http://gasifiers.bioenergylists.org/smallchp
> 
> The only work I know of using producer gas and stirling engines was by
> Henrik Carlsen at Danish Technological University which led to the
> formation
> of Stirling Danmark
> http://www.stirling.dk/
> 
> They developed a special heat exchanger for producer gas. They claim
> that
> using wet wood in an updraft gasifier: "Typically, a plant with a 200
> kW
> wood chips consumption will generate around 35 kWe power and 145 kW
> heat.
> The capacity of the updraft gasifier can easily be increased where
> several
> Stirling engines can be fuelled. Plant sizes with electrical outputs of
> 300
> kW or more is thus possible." That's 17.5% based on lower heating value
> which would be comparable to a spark ignition engine. This was based on
> testing at Harbore in Denmark. They also have 45 kWe and 85 kWe engines
> that
> have been used on wood for a few years.
> http://www.stirling.dk/default.asp?ID=142
> 
> A few years ago the target price for a gasifier=stirling system was
> about
> 3000 EUR/kW or about USD $4000/kW
> 
> I don't know the current activities of the company.
> 
> Tom Miles
> 
> 
> 
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> 
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