[Stoves] Biogas backpack

[Anand Karve]

Dear Max,
biogas is lighter than air. So, even if it leaks, it does not accumulate on
the ground like LPG to cause an explosion.
Yours
A.D.Karve

On Tue, Jan 10, 2012 at 2:20 AM, Max Turunen <maxturunen at gmail.com> wrote:

> Jean Pain used old tractor inner tube tires for that... much more gas
> could probably be contained in higher pressure, and even if heavier, such
> could be rolled along... problem: such has much more explosive power and
> potential for accidents.... and leaks do occur and can start to burst to
> flames :s
>
> But.... inner tires could be used for careful transport to various "depot"
> locales in neighbourhoods... route and tire (gas for few days for few
> households ?) kept in safe shaded and distant / blocked / fenced range,
> away from creatures and kids... far enough... with a hose, from which
> portable gas bags could be loaded.... ?
>
> Perhaps usable in some conditions...
>
>
> MaxT
>
> On Mon, Jan 9, 2012 at 8:02 PM, Crispin Pemberton-Pigott <
> crispinpigott at gmail.com> wrote:
>
>>  Dear Ron****
>>
>> ** **
>>
>> Good to hear from you in the new year.****
>>
>> ** **
>>
>> *>*I think you misunderstood the article. The bag is only for transport
>> and temporary storage. They take the empty (and some dung) to a biogas
>> producer, get it filled and go home to cook with it. It is supposed to be
>> about a day's cookin' worth.****
>>
>> I am with David House www.completebiogas.com on this one: it is a
>> portable digester with nothing but gas in it! J ****
>>
>> He writes, “It's actually a gas bag, not a digester. Even so, it's an
>> excellent innovation, and a worthy addition to the armamentarium, wherever
>> it can serve as a means of transport in connection with a large digester
>> near any large population.
>>
>> And as well, from my point of view, it's also a bit ironic, since the
>> very sturdy bag, selling for ~$US38, could actually *be* a digester if
>> it had two additional pipes (an inlet and an outlet), and further that
>> since it's about a cubic meter in volume, it would produce about a cubic
>> meter of gas every day, if fed and kept warm.”****
>>
>> I think David is working on a bag digester himself. The transport of gas
>> is interesting. If it turned out to be attractive as a cooking fuel (and
>> delivery system) the users would perhaps be convinced to install their own
>> systems. I am not convinced that a minibus would accept the gas ‘package’
>> without fear or charge.****
>>
>> It is a lot lighter than a load of wood and the walking distance might be
>> less. I wonder if a tire on a rim might be as good, and could be pumped by
>> hand. Will a tire hold a useful volume of gas if hand pumped?****
>>
>> Regards****
>>
>> Crispin****
>>
>> ** **
>>
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>>
>>
>
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>


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