[Stoves] Discussion of biomass cooking stoves <>

[paal wendelbo]

Dear Andrew

The project is based on the Tlud Peko Pe developed in Uganda in the early 
90ies and used in the refugee camp in North of Uganda with straw as fuel. 
Later on it is justified for wood ships at the Masindi Forestry College. And 
there we had a forestry-energy plantation with fast-growing trees and tried 
out cutting and drying processes.  We also had training of trainers and 
dissemination group moving around. I use the system my self for heating at 
my workshop the whole winter (with no chimney) and I know the limits. The 
last version is a cooperation with Mr. P.S.Anderson.

 We don’t have any ambition to save the world with this pilot-project. We 
just want to register what is happening with such an intervention and if the 
project will continue will be up to the community

To answer your questions

1) The stove is a simple TLUD/nd.

2) The fuel is chopped wood less than 15% moisture. We want to follow the 
whole process, by chopping the stick they will split up and dry fast in the 
sun, 2 – 3 days.

3) The fuel will be filled loose into the stove.

4) It is not us to decide about the charcoal. If the community find some 
advance with the changes there will be a justification over time about 
prices for household fuel. It is a question about to survive for everybody 
in the community, and that is not always the aim of the free market as we 
have seen this days.  For the charcoal producers it will probably be more 
easy  to cut 1” sticks than 10 “ logs.

 Regards Paal W



----- Original Message ----- 
From: "andrew heggie" <list at sylva.icuklive.co.uk>
To: "Discussion of biomass cooking stoves" <stoves at listserv.repp.org>
Sent: Friday, January 02, 2009 5:02 AM
Subject: Re: [Stoves] Discussion of biomass cooking stoves <>


> On Friday 02 January 2009 10:36:04 paal wendelbo wrote:
>> We have also learned from the discussion that the Tlud/ND is
>> giving clean smokeless energy, is efficient and flexible and will cover 
>> all
>> the needs of energy for household and institutional cooking. The Tlud can
>> utilize different types of biofuel like sawdust, maize cobs,
>>
>> straw, briquettes, pellets etc with only small changes. That's why we 
>> have
>> chosen the Tlud/nd for our project, but we start with the fuel, the fast
>> growing trees and the local resources. Afterwards we want to introduce
>> other types of biomass for briquetting for household fuel.
>
> A happy New Year to you too Paal and all stovers everywhere.
>
> You've given yourself a task in weaning people off charcoal made by
> traditional methods. Which tlud stove are you planning on?
>
> I suppose you have opted for natural draught to keep things simple?
>
> With your one year coppicing cycle I think the crux will be in making sure 
> the
> fuel is very dry, tlud stoves function mcuh better as charcoal producers 
> the
> drier the fuel.
>
> How are you planning to prepare the fuel? I've tied bundles of sticks and 
> used
> them direct in a tlud stove but one problem I found was if a smaller stick
> burned through and was able to fall to the bottom, thus destroying the
> stratified descending pyrolysis front and turning the stove into a smoky
> updraught device.
>
> What is the plan for the residual charcoal, are you going to let the 
> market
> place decide it's value and use. One thing I did learn about business is 
> that
> it's not sustainable for a business to cross subsidise an output from 
> profits
> of another part of the business.
>
> AJH
>
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