[Stoves] Using all the energy when char making

[Tom Miles]

Frank,

 

Direct combustion options include steam, Stirling engines, and organic
Rankine cycle (ORC) turbines. The challenge we have with these options is
cost, especially at the small scale. We did a recent comparison of the
feasibility at the 2 MWe scale and found that steam was the most cost
effective compared with ORC or Stirling.   


Tom

 

From: Stoves [mailto:stoves-bounces at lists.bioenergylists.org] On Behalf Of
Frank Shields
Sent: Monday, May 13, 2013 10:55 AM
To: 'Discussion of biomass cooking stoves'
Subject: [Stoves] Using all the energy when char making

 

Stovers,

 

 

Seems there is often a lot of wasted energy that could be used when making
char that is just flared off. 

I'm thinking the reason is that to convert to electricity one needs 1) a
very clean syngas 2) an expensive motor and 3) costly up-keep. The generator
is a onetime purchase with low maintenance.

 

So why not use a steam engine to convert the flame to electricity? Perhaps
not as efficient but all you are doing is heating water so the gas need not
be as clean as when drawn into an internal combustion engine. 

 

 

Thanks

 

 

Frank  

  

 

Thanks 

 

Frank Shields

 

BioChar Division

Control Laboratories, Inc. 

42 Hangar Way

Watsonville, CE  95076

 

(831) 724-5422 tel

(81) 724-3188 fax

frank at biocharlab.com

www.controllabs.com

 

 

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