Graphs of data scatter and various correlations, from 65 cordwood and 2 crib tests in 2008-9
55 tests were "normal" and 12 tests were "not normal", meaning: cold firebox and cold fuel, or bottom ignition, or cribs.
The 12 "not normal" tests are shown in purple.
What is CO and PM ? (see page 13)
Lowest CO - - HK-K11 January 18/09
0.83 g/kg PM
7.65 g/kg CO
Warm heater
White Birch, 20% moisture
7 pieces, 4.75 lbs kindling, 63.5 lbs total
Very staged burn, with evenly shaped half logs.
Highest CO - - HK-K05 January 12/09
2.29 g/kg PM
45.5 g.kg CO
Warm heater
White Birch, 20% moisture
7 pieces, 4.5 lbs kindling, 63.4 lbs total
Error - grate air control was closed for the whole run.
Lowest PM - - HK-K03 January 10/09
0.48 g/kg PM
16.24 g/kg CO
Warm heater
White Birch, 20% moisture
6 pieces, 4.5 lbs kindling, 62.3 lbs total
Error - grate air control was closed for the whole run.
Highest PM - - HK-J12 January 27/08
3.63 g/kg PM
36.50 g/kg CO
ASTM fuel crib supplied by OMNI, 10% moisture 47.2 lbs
12 pieces, 6 lbs kindling
Room temp fuel. Warm heater (24 hrs)
Kindling from the bottom (underneath pile)
Modified air - front slot reduced 50%
Low PM /// High CO - - HK-J02 January 5/08
0.66 g/kg PM
37.90 g/kg CO
Mixed oak and maple, large pieces, 16% moisture, 60.1 lbs
8 pieces. 2.5 lbs kindling.
High PM /// Low CO - - HK-K15 February 4/09
2.09 g/kg PM
18.28 g/kg CO
Warm heater
White Birch, 20% moisture
8 pieces, 4.5 lbs kindling, 60.6 lbs total
Smaller pieces, very fast start in kindling stack.
CO spike at beginning, PM spike.
This page was updated on
January 12, 2010
This page was created on September 5, 2009