HK-J30 - February 23rd, 2008

Notes

• This is the last run in the HK-J series.
• Largest fuel load of 30 run series.
• Maple, 18% moisture, 78.0 lbs
• 5 round pieces of maple, with 3 pieces of white birch on top, 2 on bottom, 10pieces
• Warm heater (162F firebox temp), cold fuel
• Side ignition
• Cold kindling, 4.0 lbs
• Similar to run HK-J29, 1/2 lb more kindling, larger load.
• Nice clean start, then fire overamped at 27 minutes, creating large opacity spike for 10 minutes.
• Dark grey smoke from stack. However, PM number still reasonably low, indicating that this was pure soot with no tar, as would be expected at this stage in the burn.
• This is an interesting demonstration of the high opacity, low mass nature of the soot component of PM.
• 1.0 g/kg PM (Condar)
• 21.5 g/kg CO
• 74.2% overall efficiency

Animation

Flue Gas

Opacity

Note that the opacity spikes lag the CO spikes, and there is no corresponding opacity spike for the CO spike at the end.

Statistics

Fuel stack

Resources

• Excel Data File: testoJ-30.xls
• Condar Spreadsheet + Fueling Excel Data File: Condar-HKJ-30.xls