White birch, small pieces, 20% moisture, 50.8 lbs
15 pieces. 2.75 lbs kindling.
Cold fuel. Cold heater
Animation, 2 minute intervals.
At 24 minutes, the ashbox door was closed as an experiment (air supply reduced to setting #2). This created a CO spike.
At 31 minutes the ashbox door was opened again (maximum air), but the burn did not recover, as is evident in the
opacity curve, below.
This may be a good example of "Umkippen der Verbrennung", an Austrian term referring to a burn "going off the
rails". Ie., a bifurcation, which is a feature of highly non-linear systems that have positive feeback phenomena.
Compare with the two ASTM crib simulation tests, HK-H12 and HK-H13, which also exhibit mid burn CO spikes,
unlike other tests.
Also HK-H16 and HK-H17 are cordwood simulations of the ASTM crib tests, and also a mid-burn CO spikes,
although not as pronounced.
TESTO Excel data file
Compare with mid-burn spikes from ASTM crib simulation tests HK-H12 and HK-H13
Also HK-H16 and HK-H17 cordwood simulations of the ASTM crib tests
Condar Spreadsheet Results
Condar Spreadsheet (includes detailed fueling data)
Pieces are numbered left to right, and stacked in a prescribed order.
Graphical data comparison of Condar tests
This page was updated on
January 17, 2008
This page was created on January 11, 2008