[Stoves] Equipment required for testing stoves

[Paul Olivier]

Frank,

Getting an accurate dry weight of biochar is indispensable in being able to
sell it.
If we douse the biochar with water, then we no longer have an accurate
measurement of dry weight.
Also biochar right out of the gasifier contains valuable heat that could be
used in keeping food warm.

Therefore I designed a terracotta vase to contain the hot biochar.
A pot placed on top of the vase prevents oxygen from entering.
The vase shown in the drawing below can hold six liters of biochar.
This is the volume of rice hull biochar produced in my 150 gasifier.
https://dl.dropbox.com/u/22013094/150%20Gasifier/Terrecotta%20Vase/Drawing/Terracotta%20Vase.pdf

Thanks.
Paul Olivier




On Wed, Dec 5, 2012 at 3:20 AM, Frank Shields <frank at compostlab.com> wrote:

> Hi Crispin,
>
> Weighing the fuel when removed (hot and burning) and dry weight after
> soaking with water, draining (screen) and drying is not a convenient
> procedure to determine moisture left -and prone to error - but only method
> I
> can think of at the moment.
> Water puts out a fire by taking away its heat. So wondering if there is
> another method that could be used? Combination nitrogen gas and pieces of
> steel in a tumbler? Must be some way besides water.
>
> Frank
>
>
> Frank Shields
> Control Laboratories, Inc.
> 42 Hangar Way
> Watsonville, CA  95076
> (831) 724-5422 tel
> (831) 724-3188 fax
> www.biocharlab.com
>
>
>
>
>
>
>
>
> -----Original Message-----
> From: Stoves [mailto:stoves-bounces at lists.bioenergylists.org] On Behalf Of
> Crispin Pemberton-Pigott
> Sent: Tuesday, December 04, 2012 11:26 AM
> To: Stoves
> Subject: Re: [Stoves] Equipment required for testing stoves
>
> Dear Frank
>
> You are on the right track, in my view. The assumed energy for the wood and
> char is a major source of imprecision in the test.
>
> As for quenching with water: unfortunately we need to know the residual
> moisture content of the fuel 'as removed'. That varies a lot depending on
> the stove type. Quenching it with nitrogen is an alternative.
>
> Regards
> Crispin
> -----Original Message-----
> From: "Frank Shields" <frank at compostlab.com>
> Sender: "Stoves" <stoves-bounces at lists.bioenergylists.org>
> Date: Tue, 4 Dec 2012 10:19:39
> To: 'Discussion of biomass cooking stoves'<stoves at lists.bioenergylists.org
> >
> Reply-To: Discussion of biomass cooking stoves
>         <stoves at lists.bioenergylists.org>
> Subject: [Stoves] Equipment required for testing stoves
>
> _______________________________________________
> Stoves mailing list
>
> to Send a Message to the list, use the email address
> stoves at lists.bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists
> .org
>
> for more Biomass Cooking Stoves,  News and Information see our web site:
> http://www.bioenergylists.org/
>
>
> _______________________________________________
> Stoves mailing list
>
> to Send a Message to the list, use the email address
> stoves at lists.bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists
> .org
>
> for more Biomass Cooking Stoves,  News and Information see our web site:
> http://www.bioenergylists.org/
>
>
>
> _______________________________________________
> Stoves mailing list
>
> to Send a Message to the list, use the email address
> stoves at lists.bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
>
> for more Biomass Cooking Stoves,  News and Information see our web site:
> http://www.bioenergylists.org/
>
>


-- 
Paul A. Olivier PhD
27/2 Phu Dong Tieng Vuong
Dalat
Vietnam

Louisiana telephone: 1-337-447-4124 (rings Vietnam)
Mobile: 090-694-1573 (in Vietnam)
Skype address: Xpolivier
http://www.esrla.com/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20121205/e7371891/attachment.html>