Current Research at Lopez Labs

February 10, 1997

Today, we did run 4 of a 10 run series with a controlled wood load. All pieces have the same moisture content, and are split from hardwood boles between 8" and 14" in diameter. The wood load consists of 8 pieces and 2 lb kindling. The pieces are stacked in a 2-3-3 log cabin configuration. The two top rows are stacked tight, with the bark down (see fuel load photo).

• Wood load: 69.7 lbs
• Wood moisture: 18.4%
• Excess air: 256%
• Average stack temp: 401F
• Burn rate: 12.26 dry kg/hr
• Overall efficiency: 71.6%
• Average heat output (24 hour cycle): 4.22 kW