Test
HK-M27
March 9, 2014
Red oak cordwood. Small wood, wetter than HK-M26
Side ignition. Newspaper 3/4 up the kindling pile.
67.8 lbs including 6.0 lbs kindling
22.9% moisture.
Stack temperature corrected for height.
Pisla HTT 602 door, 22" wide
Austrian eco firebox, see http://www.heatkit.com/research/lopez-2014-03-01.html
Custom air frame, setup "D"
Rear grate closed
Condar spreadsheet results, calculated at 140 minutes.
Animation, 5 minute intervals. Newspaper is located 3/4 up the kindling stack. Sequence goes to 170 minutes.
See burn videos, below.
Testo gas graph, entire cyle.
Notice the CO drop at 1:03 PM, when the pile is poked.
Opacity graph.
Compare with the opacity graph for HK-M26.
HK-M26
had a faster start because of a lower piece of newspaper at the
front,resulting in less staging and more of an initial spike.
Note that there is usually an immediate very short spike lasting a few seconds.
Because
the Condar is constant flow sampling instead of proportional flow (EPA
dilution tunnel), it over-estimates the PM at the beginning, when flow
is low.
We can very reliably predict that an EPA number will be slightly lower than a Condar number - this allows the Condar
to be used with less precision, yet still give reliable
pre-certification estimates before going to an accredited lab for
certification testing.
Red oak cordwood with bark left on. Largest pieces were placed at the bottom, smallest pieces at the top.
Stacked in firebox
Burn sequence to 180 minutes
Video:
This page was updated on March 9, 2014
This page was created on March 9, 2014