[Stoves] Fabricated Burn Barrel TLUDS

[Tom Miles]

AD, Paul, Kobus and others. Many thanks for the suggestions. 

 

What is the largest practical size (kg fuel/hr, kW) for a single TLUD with a
clean stack for heat recovery? There must be a limit to the air penetration
to get a clean gas burn form a natural draft stack or even a fan driven
TLUD. 

 

Tom 

 

From: stoves-bounces at lists.bioenergylists.org
[mailto:stoves-bounces at lists.bioenergylists.org] On Behalf Of Anand Karve
Sent: Friday, September 28, 2012 11:22 PM
To: Discussion of biomass cooking stoves
Subject: Re: [Stoves] Fabricated Burn Barrel TLUDS

 

Dear Tom,

we regularly supply charring kilns made out of used 55 gallon drums. The
kilns are based on the TLUD principle. The cost of a kiln plus an extra
barrel for storing the char, is about US$100. We have sold more than 100
such kilns in India and have also trained a number of persons from India and
Africa. These kilns are so easy to manufacture, that we ask the trainees to
photograph and take measurements of our kiln so that they can copy the
design. In many instances, people buy a kiln from us, because they feel that
their local fabricator would be better able to copy the design from an
actual object than from a blue print or a photograph.

The advantage of using 55 gallon drums is that used drums are available at a
relatively low cost, and the kilns are portable. Instead of transporting the
biomass, one transports the kiln to the location where the biomass is
available, and brings back only the charred material, which weighs only a
third as much as the biomass.  

Yours

A.D.Karve

On Fri, Sep 28, 2012 at 11:42 PM, Tom Miles <tmiles at trmiles.com> wrote:

Am often asked if there is a burn barrel sized TLUD that is commercially
fabricated. We've seen some great DIY with Doug's Jolly Roger and others. Is
anyone fabricating a 55 gal drum sized TLUD that can be used for regular
biochar production? If so, what is the cost and availability?

 

Thanks

 

Tom Miles  


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-- 
***
Dr. A.D. Karve
Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)



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