[Stoves] Re tar in P-gas

[Otto Formo]

Dear all,
I guess Switchgrass is considered as excellent fuel in gasifisres, either you call it a TLUD test or not?
Pellets out of grass has proved to be suitable fuel in gasifiers, like the Peko Pe.
Now and even before, I dont see any or much difference from other types of pellets made out of grass. 

The problems with slagging, can "easily" be avoided by using the char as biocahr and removed before reaching that stage. isnt that correct, Crisrpin?
Then you also avoid the higher accumelated ash content as well.

Have a nice an quite Christmas and Happy Holydays.

Regards
Otto

> From: Crispin Pemberton-Pigott [crispinpigott at gmail.com]
> Sent: 2011-12-20 22:23:10 MET
> To: 'Discussion of biomass cooking stoves' [stoves at lists.bioenergylists.org]
> Subject: Re: [Stoves] Re tar in P-gas
> 
> Dear Paal
> 
>  
> 
> Thank you for emphasizing that the fuel makes a difference to these
> formations. A study of stove fuel moisture and its effect on emissions (not
> a different fuel, just a different moisture level) was undertaken by
> Ernestine Yuntenwi
> http://opus.kobv.de/btu/volltexte/2008/458/pdf/diss_ernestine_pdf.pdf which
> showed considerable variation in emissions even if the stove and pot were
> the same. Different stoves react in completely different ways to a similar
> change in fuel moisture. Some might stop operating altogether.
> 
>  
> 
> Regards
> 
> Crispin
> 
>  
> 
>  
> 
>  
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> 
> ++++++++++++
> 
>  
> 
> Dear Stovers
> 
> There are at least three troubles on the cooking pot caused by stove and
> type of fuel while cooking.
> 
> 1.	Soot, which is easy to clean
> 2.	Tar, which is more troublesome to clean
> 3.	Pitch, which is more like varnish and really difficult to remove. 
> 
> Which one of 2 and 3 are we talking about? All of them are possible to avoid
> by using TLUD-ND with a good balance between the primary and secondary air,
> and distance to the pot, but it differ a bit with type of fuel.
> 
> Regards Paal W
> 
>  
>