[Stoves] corn cobs and char?

[Paul Olivier]

Kevin,

Note that I used the phrase "sufficiently uniform". I have experimented
with several forms of loose biomass in no way as uniform as rice hulls,
such as coffee husks. Some work quite nicely.

But I would not venture a guess about the wooden spheres you describe.
I like to see a certain resistance to air or gas flow.
We can't say much until we run tests.

Thanks.
Paul


On Wed, Aug 14, 2013 at 5:04 AM, Kevin <kchisholm at ca.inter.net> wrote:

> **
> Dear Paul
>
> ----- Original Message -----
> *From:* Paul Olivier <paul.olivier at esrla.com>
> *To:* Discussion of biomass cooking stoves<stoves at lists.bioenergylists.org>
> *Sent:* Tuesday, August 13, 2013 6:38 PM
> *Subject:* Re: [Stoves] corn cobs and char?
>
>  Ron,
>
> In a TLUD it's all about the uniformity of air flow.
> If corn cobs were cut to the same length, they just might be sufficiently
> uniform.
>
> # I think it is a bit more complex that "unifiorm length." With a given
> species of fuel, I think it is more a relation of relative size (that would
> determine pressure drop and uniformity of flow across the fuel bed), and
> surface area and diameter of the fuel particle. (That will have a large
> impact on fuel burning characteristics.)
>
> For example, consider a TLUD running on wood spheres of say 1/4" daimeter,
> and 1" diameter. Such stoves would have quite different operating
> characteristics.
>
> Best wishes,
>
> Kevin
>
>
>
>
> Thanks.
>
> Paul Olivier
>
>
> On Wed, Aug 14, 2013 at 1:54 AM, Ronal W. Larson <
> rongretlarson at comcast.net> wrote:
>
>> List:
>>
>>    Anyone have any data on using corn cobs in char-making stoves?  The
>> supply would seem to be large and likely low cost..
>>
>> Ron
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>>
>
>
> --
> Paul A. Olivier PhD
> 26/5 Phu Dong Thien Vuong
> Dalat
> Vietnam
>
> Louisiana telephone: 1-337-447-4124 (rings Vietnam)
> Mobile: 090-694-1573 (in Vietnam)
> Skype address: Xpolivier
> http://www.esrla.com/
>
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-- 
Paul A. Olivier PhD
26/5 Phu Dong Thien Vuong
Dalat
Vietnam

Louisiana telephone: 1-337-447-4124 (rings Vietnam)
Mobile: 090-694-1573 (in Vietnam)
Skype address: Xpolivier
http://www.esrla.com/
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