[Stoves] Fabricated Burn Barrel TLUDS

[Ronald Hongsermeier]

Dear AD,

Thanks for clarifying this issue that I mentioned in a msg to the list, 
evidently whilst you were composing this one.

regards,

Ronald aus der Oktoberfestlaune


On 30.09.2012 03:37, Anand Karve wrote:
> Dear Tom,
> our charring kilns are used primarily for light biomass such as dried 
> leaves, paper waste, cardboard, threshing floor debris, pine needles, 
> straw, etc. This material is too light to be transported to a central 
> charring unit. Therefore the user takes the kilns to the place where 
> the biomass is lying. A kiln accepts about 6 kg of such waste 
> and takes about 15 minutes to char it. Since these are portable units, 
> we dont bother to get any useful heat out of them. The material is not 
> packed into the barrels, as it would obliterate the air flow. It is 
> placed only lightly inside the barrel. If the operator finds that the 
> material is obliterating the primary air, we advice him to reduce the 
> quantity of material placed in the barrel.
> Yours
> A.D.Karve
>
> On Sat, Sep 29, 2012 at 9:16 PM, Tom Miles <tmiles at trmiles.com 
> <mailto:tmiles at trmiles.com>> wrote:
>
>     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>
>     [mailto: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
>     <mailto: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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> -- 
> ***
> Dr. A.D. Karve
> Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)
>
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