Ron,<br><br>I think that this is what I need:<br><a href="http://www.hceramic.com/products/Liquefied_gas_stove_slice/">http://www.hceramic.com/products/Liquefied_gas_stove_slice/</a><br>You found it.<br>Thanks.<br><br>Paul<br>
<br><div class="gmail_quote">On Fri, Mar 9, 2012 at 7:42 AM, Paul Olivier <span dir="ltr"><<a href="mailto:paul.olivier@esrla.com">paul.olivier@esrla.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Very good, Ron.<span class="HOEnZb"><font color="#888888"><br><br>Paul</font></span><div class="HOEnZb"><div class="h5"><br><br><div class="gmail_quote">On Fri, Mar 9, 2012 at 7:21 AM, <span dir="ltr"><<a href="mailto:rongretlarson@comcast.net" target="_blank">rongretlarson@comcast.net</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><div style="font-size:12pt;font-family:Arial"><div style="font-size:12pt;font-family:Arial">Paul, Matt, list:<br><br> I like your (earlier) idea of a ceramic "strainer". You
might want to start by doing more googling on the topic of "ceramic
foam" - which seems to be a relatively new sub-discipline of the ceramic
industry. The "foam" companies seem to be able to produce a material
which can serve as a strainer (open cell structure, not closed) - which
will allow the hot gases to flow through the foam.<br><br> Here is one example of a group explaining this sort of work:<br> <a href="http://www.madehow.com/Volume-5/Ceramic-Filter.html#b" target="_blank">http://www.madehow.com/Volume-5/Ceramic-Filter.html#b</a><br>
<br> There are plenty of companies doing this "foam" work - to be found via googling.<br><br> Following Matt's suggestions below, there may be a place also for "rock wool" - vs glass fiber (to get higher temp capability.<br>
<br>If you use metal (as below), I think a thin ceramic coating might help on longevity, if the coating is thin enough. Will be hard to match coefficients of thermal expansion, but may be possible .<br><br>Ron<br><br><hr>
<b>From: </b>"Paul Olivier" <<a href="mailto:paul.olivier@esrla.com" target="_blank">paul.olivier@esrla.com</a>><br><b>To: </b><a href="mailto:mredmond3@gatech.edu" target="_blank">mredmond3@gatech.edu</a><br>
<b>Cc: </b>"Discussion of biomass cooking stoves" <<a href="mailto:stoves@lists.bioenergylists.org" target="_blank">stoves@lists.bioenergylists.org</a>><br><b>Sent: </b>Thursday, March 8, 2012 4:54:46 PM<br>
<b>Subject: </b>Re: [Stoves] the 150 gasifier in operation in Vietnam (Matt Redmond)<div><div><br><br>Matt,<br><br>One way to solve the problem of what material to use in a wire mesh dome<br> is to view the wire mesh as a disposable item that might last but a few months.<br>
I found an easy way to insert a 304 stainless steel wire mesh disk (30 mesh) into a rigid receiving structure that is dome-shaped.<br>
When a flat wire mesh disk is pushed into the shape of a dome, it exerts a lot of pressure against the receiving structure.<br>Nothing has to be welded.<br>When it wears out, it is pulled out, and another disk is put in its place.<br>
<br>Thanks.<br>Paul<br><br><div class="gmail_quote">On Wed, Mar 7, 2012 at 7:44 PM, Matthew Redmond <span dir="ltr"><<a href="mailto:mredmond3@gatech.edu" target="_blank">mredmond3@gatech.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Ron, List, <div><br></div><div>Interesting find. You reported that the silicon carbide meshes for drywall sanding are really just paper meshes coated with silicon carbide.</div><div><br></div><div>I was trying to think of other materials that can handle high temperatures and ceramics came to mind. Ceramics are often used in metal casting processes. Aluminum Oxide, or even some sorts of fiberglass have high working temperatures. Ceramics generally have higher emissivity than metals (~ 0.7 I think). </div>
<div><br></div><div>It looks like fiberglass meshes are often used to filter molten aluminum and iron for casting operations. Perhaps something like this would have longer lifetimes? Again, cost may become a big issue, but here are 2 that I found: </div>
<div><a href="http://www.ecplaza.net/trade-leads-seller/fiberglass-mesh-for-aluminium-filtration--6816138.html" target="_blank">http://www.ecplaza.net/trade-leads-seller/fiberglass-mesh-for-aluminium-filtration--6816138.html</a>
</div><div><a href="http://www.king-in-china.com/productview.asp?id=954" target="_blank">http://www.king-in-china.com/productview.asp?id=954</a>
</div><div><br></div><div>Just throwing a few more ideas out there. </div><div><br></div><div>-Matt Redmond</div><div><br></div><div><br></div><div><br></div>
</blockquote></div><br><br clear="all"><br>-- <br>Paul A. Olivier PhD<br>27C Pham Hong Thai Street<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>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Paul A. Olivier PhD<br>27C Pham Hong Thai Street<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>
</div></div></blockquote></div><br><br clear="all"><br>-- <br>Paul A. Olivier PhD<br>27C Pham Hong Thai Street<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>