Frank,<br><br>Getting an accurate dry weight of biochar is indispensable in being able to sell it.<br>If we douse the biochar with water, then we no longer have an accurate measurement of dry weight.<br>Also biochar right out of the gasifier contains valuable heat that could be used in keeping food warm.<br>
<br>Therefore I designed a terracotta vase to contain the hot biochar.<br>A pot placed on top of the vase prevents oxygen from entering.<br>The vase shown in the drawing below can hold six liters of biochar.<br>This is the volume of rice hull biochar produced in my 150 gasifier.<br>
<a href="https://dl.dropbox.com/u/22013094/150%20Gasifier/Terrecotta%20Vase/Drawing/Terracotta%20Vase.pdf">https://dl.dropbox.com/u/22013094/150%20Gasifier/Terrecotta%20Vase/Drawing/Terracotta%20Vase.pdf</a><br><br>Thanks.<br>
Paul Olivier<br><br><br><br><br><div class="gmail_quote">On Wed, Dec 5, 2012 at 3:20 AM, Frank Shields <span dir="ltr"><<a href="mailto:frank@compostlab.com" target="_blank">frank@compostlab.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Crispin,<br>
<br>
Weighing the fuel when removed (hot and burning) and dry weight after<br>
soaking with water, draining (screen) and drying is not a convenient<br>
procedure to determine moisture left -and prone to error - but only method I<br>
can think of at the moment.<br>
Water puts out a fire by taking away its heat. So wondering if there is<br>
another method that could be used? Combination nitrogen gas and pieces of<br>
steel in a tumbler? Must be some way besides water.<br>
<br>
Frank<br>
<br>
<br>
Frank Shields<br>
Control Laboratories, Inc.<br>
42 Hangar Way<br>
Watsonville, CA 95076<br>
(831) 724-5422 tel<br>
(831) 724-3188 fax<br>
<a href="http://www.biocharlab.com" target="_blank">www.biocharlab.com</a><br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
-----Original Message-----<br>
From: Stoves [mailto:<a href="mailto:stoves-bounces@lists.bioenergylists.org">stoves-bounces@lists.bioenergylists.org</a>] On Behalf Of<br>
Crispin Pemberton-Pigott<br>
Sent: Tuesday, December 04, 2012 11:26 AM<br>
To: Stoves<br>
Subject: Re: [Stoves] Equipment required for testing stoves<br>
<br>
Dear Frank<br>
<br>
You are on the right track, in my view. The assumed energy for the wood and<br>
char is a major source of imprecision in the test.<br>
<br>
As for quenching with water: unfortunately we need to know the residual<br>
moisture content of the fuel 'as removed'. That varies a lot depending on<br>
the stove type. Quenching it with nitrogen is an alternative.<br>
<br>
Regards<br>
Crispin<br>
-----Original Message-----<br>
From: "Frank Shields" <<a href="mailto:frank@compostlab.com">frank@compostlab.com</a>><br>
Sender: "Stoves" <<a href="mailto:stoves-bounces@lists.bioenergylists.org">stoves-bounces@lists.bioenergylists.org</a>><br>
Date: Tue, 4 Dec 2012 10:19:39<br>
To: 'Discussion of biomass cooking stoves'<<a href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a>><br>
Reply-To: Discussion of biomass cooking stoves<br>
<<a href="mailto:stoves@lists.bioenergylists.org">stoves@lists.bioenergylists.org</a>><br>
Subject: [Stoves] Equipment required for testing stoves<br>
<br>
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</blockquote></div><br><br clear="all"><br>-- <br>Paul A. Olivier PhD<br>27/2 Phu Dong Tieng Vuong<br>Dalat<br>Vietnam<br>
<br>Louisiana telephone: 1-337-447-4124 (rings Vietnam)<br>Mobile: 090-694-1573 (in Vietnam)<br>Skype address: Xpolivier<br><a href="http://www.esrla.com/" target="_blank">http://www.esrla.com/</a><br>