HK-J03 - January 11th, 2008

Notes

• Highest piece count (cordwood) of 30 run series
• Small white birch, 20% moisture, 51 lbs
• Cold heater, cold fuel
• Small wood, 15 pieces, stacked tight, 2.75 lbs kindling
• 2.34 g/kg PM (Condar)
• 38.75 g/kg CO
• 76.5 % overall efficiency

Animation

Flue gas

Flue gas analysis

• 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 feedback 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.

Opacity

Compare with mid-burn spikes from ASTM crib simulation tests HK-H12 and HK-H13. Also compare HK-H16 and HK-H17 cordwood simulations of the ASTM crib tests.

Statistics

Fuel stack

Resources

• Excel Data File: testoJ-03.xls
• Condar Spreadsheet + Fueling Excel Data File: Condar-HKJ-03.xls