[Stoves] Challenging fuel

[Crispin Pemberton-Pigott]

Dear Kirk

You are correct. It is how Dr AD's charcoal powder maker works with sugarcane‎ leaves: using a retort within a fire.

>From your description there is no reason why fuels cannot be mixed - sawdust and so on - that is hard to burn on its own.

Thanks for reporting your progress. It is inspiring.

Regards
Crispin

BBM 2B567CC3
From: kgharris
Sent: Thursday, December 18, 2014 03:46
To: Discussion of biomass cooking stoves
Reply To: Discussion of biomass cooking stoves
Subject: Re: [Stoves] Challenging fuel


Marc and All,

Was there not a post a month or two ago about putting rice hulls or saw dust into a can with a hole in the top.  This then was put in the reactor with fuel around it.  The heat of the stove pyrolyzed the contents of the can and produced wood gas which exited the hole and was burned in the secondary.  I forget who posted it and could not find the post, but it was a wonderful idea.  I tried this with saw dust and with pellets and both worked.  The can needs to be raised off the grate some so pyrolysis will finish before the migratory pyrolysis front goes out or it smokes on and on.  A single screening of the almond hulls will seperate the small pieces and dust out for use in the can, while the larger pieces will be the outer fuel.  This way the small pieces are used without clogging the primary air passage.  Perhaps pieces that are too large could be used in the can as well without having to chop them up.  The can cannot be to big or the power level is reduced.  The can which worked for me was .4 the diameter which is 1/6 the area of the reactor.

Kirk
  ----- Original Message -----
  From: "Marquitusus "@k.mx.sonic.net
  To: 'Discussion of biomass cooking stoves'
  Sent: Tuesday, December 16, 2014 3:21 PM
  Subject: [Stoves] Challenging fuel




  Dear stovers,

  I send you a picture of the fuel I'm trying to deal with.
  This is the raw fuel as it is normally sold here. They are almond husks.
  As you see, it's sizes varies from 1 to 40mm!

  Maybe people can tell me how this can affect the TLUD design











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