<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Today I added 9 more secondary air ports just above the first 29. The results were predictable:</div><div><br>1. Less draft on the already restricted primary made starting even trickier;</div><div><br></div><div>2. The red,orange hot carbon flame issue was clearly abated, if not fully eliminated - ie fewer moments of soot clearly being ejected.</div><div><br></div><div>3. Run time was slightly extended - ie pyrolysis was a bit slower;</div><div><br></div><div>4. Peak temperatures were lower which showed up as less thermal damage to the metal parts, esp, the central column in the burner.</div><div><br></div><div>5. Biochar yield went up slightly to about 20%. Nice stuff too.</div><div><br></div><div>Sometime in May I will try a reactor with about twenty five ½ inch holes in a single layer for secondary air.</div><div><br></div><div>That's it for now.</div><div><br></div><div>Thanks,</div><div><br></div><div>Jock</div><div><br></div><div>PS: If you wish to contact me, PLEASE use <jock[at]jockgill[dot]com> -- this keeps my email off of Apple's and Google's servers. I am not terribly interested in them reading my email and then monetizing it.</div><div><br><div>Jock Gill</div><div>P.O. Box 3</div><div>Peacham, VT 05862</div><div><br></div><div>Cell: (617) 449-8111</div><div><br></div><div><span style="font-weight: bold; text-decoration: underline; background-color: rgba(255, 255, 255, 0);"><a href="http://google.com/+JockGill">google.com/+JockGill</a></span></div><div><br></div><div><span style="background-color: rgba(255, 255, 255, 0);">:> Extract CO2 from the atmosphere! <:</span></div><div><br></div>Via iPad</div></body></html>