Crib test. Top two layers are 4x4 spruce, 15% moisture, 4 pc per layer. See stacking photos.
Left side ignition with 3 standard newspaper balls tucked into the recess shown (no room to ignite
small kindling at bottom). Similar to "side burn" ignition, except with no kindling.
Resulted in an interesting "top down" burn.
Very different burn characteristics from cordwood, particularly CO and PM (see gas and opacity curves)
Regular air - ashbox door closed, air open for whole burn, no changes
Opacity normalized to a 1 - 100 scale, referenced to HK-H11
Flue gas analysis. Compare with HK-H10, a normal hardwood run in a cold heater, with the updated opacity system
and using the same air.
CO/CO2 ratio minimum of 0.0147 at 62 minutes.
Opacity. Compare with HK-H10, a normal hardwood run in a cold heater, using the same air.
Fuel Load. Newspaper not shown - 4 balls tucked into the recess at lower left.
Top two layers are spruce 4"x4"s, spaced 3/4" apart, sitting on 3/4" spacers.
Detail of bottom layers, below.
Crib detail. First layer is 3/4 x 3/4" spruce, 20% moisture
Next is a layer of 1.75" x 1.75", spaced 3/4" apart horizontally.
Next layer is 2"x4"s, sitting on 3/4" spacers, and spaced 3/4" apart horizontally. 15% moisture.
TESTO Excel data file
This page was updated on
March 18, 2007
This page was created on March 4, 2007