[Stoves] BioBriquette testing

[Richard Stanley]

Ref stove / Briquette testing in Malawi,
I've got a better idea,
Rather than trying to enter cold with your own insight  from scratch, 
or even relying upon our  foreign perspective there, Why not first go 
to the Nkhmoano center for development in Indirande , or the PAMET 
organisation in neighboring Blantyre and talk to William Malabu and 
Bonaventure Chidzaro respectively. These organisations are actually 
assisting local village groups, know all about the applications of the 
briquettes in real life cooking situations and can teach you all you 
need to know for your subsequent empirical  modeling of their 
reality...

Richard Stanley


On Oct 30, , at 8:48 AM, Crispin Pemberton-Pigott wrote:

> Dear Olof
>
> Please contact Andi Michel at the ProBEC office in Mulanje (email 
> address
> above) for some assistance.
>
> You are correct, the tests are for stoves not fuels, however there is 
> little
> point in burning a fuel in a stove for which it was not designed.
>
> They have some capacity to burn different things and you might try out 
> one
> or more of the stoves they have (in some numbers) at the 
> office/workshop.
>
> My best suggestion is to get a moisture content before burning it, and 
> to
> work out how much heat is in it theoretically.  Then cook with various
> moisture contents in different devices and there will always be 
> surprises -
> good and bad.
>
> It is quite possible that you will find briquettes burn best when 
> combined
> with wood fuel.
>
> You may also find that the emissions from charcoal are significantly 
> reduced
> when you add small briquettes because they provide the flames to 
> ignite the
> CO.  You might have to raise the pot to get a combination of fuels to 
> work
> better (provide flame-space).
>
> Have fun!
>
> Best regards
> Crispin in Matsapha
> (Swaziland)
>
> ----- Original Message -----
> From: "Olof Nyström" <olof.nystrom at gmail.com>
> To: <stoves at listserv.repp.org>
> Sent: Monday, October 30, 2006 3:25 PM
> Subject: [Stoves] BioBriquette testing
>
>
> Hello all,
>
> we are two engineering students from Sweden, now in Malawi,  and need 
> some
> help about fuel testing. We want to make fuel tests to compare 
> different
> biomass briquettes with charcoal and firewood (in terms of heat 
> content/kg,
> price/Joule etc). We are now thinking about possible ways to carry out 
> these
> tests.
>
> We are planning to do something like a Water Boiling Test to make a
> comparison, although this test is made to compare stoves and not 
> fuels. Is
> there any similar controlled standard tests that are more suited for 
> testing
> of fuels?
>
> One problem we face is the comparison between charcoal and briquettes, 
> since
> we believe that the charcoal needs to be tested on a charcoal stove 
> while
> the briquettes are more suited for use in a firewood stove. To make a 
> fair
> comparison these stoves should have similar efficiency, and this may 
> be a
> problem. Anybody with experience on this topic?
>
> Regards,
>
> Olof Nyström
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