<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Arial; font-size: 12pt; color: #000000'>Kevin:<br><br> I don't recall saying I need any spherical biomass. But any size, and specification, and amount you have will find a needy biochar home. What have you got for us?<br><br>Ron<br> <br><br><hr id="zwchr"><b>From: </b>"Kevin" <kchisholm@ca.inter.net><br><b>To: </b>"Discussion of biomass cooking stoves" <stoves@lists.bioenergylists.org><br><b>Sent: </b>Tuesday, May 7, 2013 4:35:55 PM<br><b>Subject: </b>Re: [Stoves] Charcoal as space filler in TLUD reactors<br><br>
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<div><font face="Arial">Dear Ron</font></div>
<blockquote style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<div style="FONT: 10pt arial">----- Original Message ----- </div>
<div style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><b>From:</b>
<a title="rongretlarson@comcast.net" href="mailto:rongretlarson@comcast.net" target="_blank">rongretlarson@comcast.net</a> </div>
<div style="FONT: 10pt arial"><b>To:</b> <a title="stoves@lists.bioenergylists.org" href="mailto:stoves@lists.bioenergylists.org" target="_blank">Discussion of biomass cooking
stoves</a> ; <a title="frank@compostlab.com" href="mailto:frank@compostlab.com" target="_blank">Frank Shields</a> </div>
<div style="FONT: 10pt arial"><b>Sent:</b> Tuesday, May 07, 2013 5:57 PM</div>
<div style="FONT: 10pt arial"><b>Subject:</b> Re: [Stoves] Charcoal as space
filler in TLUD reactors</div>
<div><br></div>
<div style="FONT-FAMILY: Arial; COLOR: #000000; FONT-SIZE: 12pt">Frank and
list:<br><br> Need to bring in one more variable: fuel
shape. Imagine the fuel is pencil shaped. If placed vertically,
they work fine to make char. If horizontal and parallel, they can block
most vertical air flow. Anyone able to supply biomass fuel
spheres?</div>
<div style="FONT-FAMILY: Arial; COLOR: #000000; FONT-SIZE: 12pt"> </div>
<div style="FONT-FAMILY: Arial; COLOR: #000000; FONT-SIZE: 12pt"># What
diameter do you want? What material? Do you have a complete specification? How
many tonnes do you want? How much are you willing to pay per tonne?</div>
<div style="FONT-FAMILY: Arial; COLOR: #000000; FONT-SIZE: 12pt"> </div>
<div style="FONT-FAMILY: Arial; COLOR: #000000; FONT-SIZE: 12pt">Kevin<br><br>Ron<br><br></div>
<div style="FONT-FAMILY: Arial; COLOR: #000000; FONT-SIZE: 12pt">
<hr id="zwchr">
</div>
<div style="FONT-FAMILY: Arial; COLOR: #000000; FONT-SIZE: 12pt"><b>From:
</b>"Frank Shields" <<a href="mailto:frank@compostlab.com" target="_blank">frank@compostlab.com</a>><br><b>To:
</b>"Discussion of biomass cooking stoves" <<a href="mailto:stoves@lists.bioenergylists.org" target="_blank">stoves@lists.bioenergylists.org</a>><br><b>Sent:
</b>Tuesday, May 7, 2013 2:46:13 PM<br><b>Subject: </b>Re: [Stoves] Charcoal
as space filler in TLUD reactors<br><br>Dear Martin, <br><br>I often determine
the particle density here in the lab using free flowing<br>sand. If the
particle density of the fuel is determined (g/cc) and you know<br>the weight
of fuel packed in a known volume you know the volume of voids and<br>can
determine the air speed - I am thinking.
<br><br>Frank<br><br><br><br><br>-----Original Message-----<br>From:
Stoves [mailto:stoves-bounces@lists.bioenergylists.org] On Behalf
Of<br>ajheggie@gmail.com<br>Sent: Tuesday, May 07, 2013 1:26 PM<br>To:
Discussion of biomass cooking stoves<br>Subject: Re: [Stoves] Charcoal as
space filler in TLUD reactors<br><br>[Default] On Tue, 7 May 2013 09:22:19
+0200,"Boll, Martin Dr."<br><boll.bn@t-online.de> wrote:<br><br>>You
have to calculate the free space in order to get the real air-speed in<br>this
area.<br>>I think even if that is naturally not the true surface-speed on
the fuel,<br>it is a good number to deal with.<br><br>I think in gasification
they use the term "superficial velocity" a fictional<br>speed derived from the
air volume and cross section of the chamber, the<br>actual speed of any given
bit of air flow through the spaces will be much<br>higher of
course.<br><br>AJH<br><br>_______________________________________________<br>Stoves
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<p></p>_______________________________________________<br>Stoves mailing
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