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In the early days of graphite fiber/graphite matrix brake disks on race cars, the ceramic coating would sometimes crack, allowing oxygen onto the hot graphite. The result became known in the pits as "Designer Coal."<div><br class="webkit-block-placeholder"></div><div>Bob</div><div><br class="webkit-block-placeholder"></div><div><div><div>On 15-Jul-12, at 9:50 PM, Viswanathan KS wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">IMO the graphite tubes are not coated.<br><br><div class="gmail_quote">On Mon, Jul 16, 2012 at 8:45 AM, Bob Stuart <span dir="ltr"><<a href="mailto:bobstuart@sasktel.net" target="_blank">bobstuart@sasktel.net</a>></span> wrote:<br> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Would the coating that protects the graphite from oxidation not also work on copper?<span class="HOEnZb"><font color="#888888"><br> <br> Bob</font></span><div class="im"><br> <br> On 15-Jul-12, at 8:10 PM, Tom Miles wrote:<br> <br> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im"> Graphite heat exchangers are now used on domestic condensing hot water boilers. (See SGL Group.) Heat transfer is reportedly 8 times that of stainless steel. Why not use them for cooling and condensing producer gas?<br> <br> <br> <br> Tom<br> <br></div><div class="im"> ______________________________<u></u>_________________<br> Gasification mailing list<br> <br> to Send a Message to the list, use the email address<br> <a href="mailto:Gasification@bioenergylists.org" target="_blank">Gasification@bioenergylists.<u></u>org</a><br> <br> to UNSUBSCRIBE or Change your List Settings use the web page<br> <a href="http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org" target="_blank">http://lists.bioenergylists.<u></u>org/mailman/listinfo/<u></u>gasification_lists.<u></u>bioenergylists.org</a><br> <br> for more Gasifiers, News and Information see our web site:<br> <a href="http://gasifiers.bioenergylists.org/" target="_blank">http://gasifiers.<u></u>bioenergylists.org/</a><br> </div></blockquote><div class="HOEnZb"><div class="h5"> <br> <br> ______________________________<u></u>_________________<br> Gasification mailing list<br> <br> to Send a Message to the list, use the email address<br> <a href="mailto:Gasification@bioenergylists.org" target="_blank">Gasification@bioenergylists.<u></u>org</a><br> <br> to UNSUBSCRIBE or Change your List Settings use the web page<br> <a href="http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org" target="_blank">http://lists.bioenergylists.<u></u>org/mailman/listinfo/<u></u>gasification_lists.<u></u>bioenergylists.org</a><br> <br> for more Gasifiers, News and Information see our web site:<br> <a href="http://gasifiers.bioenergylists.org/" target="_blank">http://gasifiers.<u></u>bioenergylists.org/</a><br> </div></div></blockquote></div><br><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">_______________________________________________</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Gasification mailing list</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">to Send a Message to the list, use the email address</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><a href="mailto:Gasification@bioenergylists.org">Gasification@bioenergylists.org</a></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">to UNSUBSCRIBE or Change your List Settings use the web page</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><a href="http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org">http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org</a></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; min-height: 14px; "><br></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">for more Gasifiers,<span class="Apple-converted-space"> </span>News and Information see our web site:</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><a href="http://gasifiers.bioenergylists.org">http://gasifiers.bioenergylists.org</a>/</div> </blockquote></div><br></div></body></html>