See comments.<br><br><div class="gmail_quote">On Wed, Mar 14, 2012 at 1:54 PM, Andrew C. Parker <span dir="ltr"><<a href="mailto:acparker@xmission.com">acparker@xmission.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Are you measuring the temperature of the gas or the radiant temperature or both? </blockquote><div><br>I am supposed to be measuring both. <br>The temperature with the dome normally should not be be less than without the dome.<br>
This, though, is what's happening.<br>This means, perhaps, that the probe is not absorbing thermal radiation very well.<br> </div><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
The gas temperature should go down with the dome and the radiant energy should go up. </blockquote><div><br>It makes perfect sense that the gas temperature should go down.<br>I think that my probe, though, is not picking up the thermal radiation very well when the dome is present.<br>
But, then, without the dome, the probe turns red hot.<br>With the dome, it does not.<br> </div><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">In reading the patents I posted earlier, the point appears to be to convert as much heat into IR as possible. Infraconic purports to convert 70% or more, which seems a reasonable goal, since the heaters are pointed down.<br>
</blockquote><div><br>I like very much the funnel that surrounds the infraconic heater.<br><a href="http://www.infraconic.com/">http://www.infraconic.com/</a><br>What is the funnel made from?<br></div><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<br>
If you want to measure the total radiant heat from the dome, it might be more complex than a single temperature probe.<br>
<br>
Both commercial heater patents burn the gas in/on the porous layer. Both use diffuser(s)/flame suppressor(s) before the combustion layer. I think that the gas diffusers in both designs also serve to reflect radiant energy back to the combustion layer. The Infraconic adds an amplifying layer after the combustion layer.<br>
<br>
Have you tried using the mesh dome as your primary gas burner (be careful of backfires)?<br></blockquote><div><br>Yes, if I turn the gas very low, I only get combustion of the gas in the apex of the dome.<br>No backfires occur.<br>
</div><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<br>
The two chimney designs convert heat from a primary heat source and convert it into IR or visible light. There may be some secondary combustion in/on the porous layer.<br>
<br>
For Rocket stovers, the first thing that came to mind when I read the Infraconic patents and, more particularly after reading the chimney patent, was Aprovecho's study on controlling chimney draft.<br>
<br>
<br>
Andrew Parker (Not AJH, so feel free to take my comments with a sack of salt.)<br>
<br>
<br>
<br>
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<br>
On Tue, 13 Mar 2012 22:38:02 -0600, Paul Olivier <<a href="mailto:paul.olivier@esrla.com" target="_blank">paul.olivier@esrla.com</a>><br>
wrote:<div class="im HOEnZb"><br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Alex,<br>
<br>
I took three sets of temperature readings with and without the dome.<br>
<br>
With Without<br>
Reading 1 - 500 C 563 C<br>
Reading 2 - 473 C 578 C<br>
Reading 3 - 470 C 571 C<br>
<br>
All measurements were taken at the same height above the burner.<br>
With the dome, the probe remained its normal color.<br>
Without the dome, the probe got red hot.<br>
<br>
The burner that I am using is a Belonio burner.<br>
In a first step I added a burner housing to the Belonio burner.<br>
In a second step I added the dome.<br>
I can't imagine that the burner housing alone accounts<br>
for the much better boiling time that I get in comparison to Belonio.<br>
I am totally at loss in explaining these temperature readings.<br>
<br>
Paul<br>
</blockquote>
<br></div><div class="HOEnZb"><div class="h5">
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