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2010 Heater Fuel Tests at Shawville

Test HK-L20
February 26, 2010

Second of a pair matched loads, large loads of wet birch, stacked front to back.
White birch, 78.1 lb total, incl. 3.75 lbs kindling. 31.7% moisture.
North-South loading. Largest pieces first. Loaded onto a coal bed (Colorado method)
Efficiency is calculated at 95% oxygen recovery (Colorado method).
Stack temperature corrected for height.

Did not spike like last test, slower controlled start, yet hotter burn overall, slightly shorter.
Slightly drier, hotter firebox to start, so difference must have been in the stacking.
40% lower PM, 20% lower CO, 0.6% higher efficiency

Condar Spreadsheet Results
Condar Spreadsheet Results

Condar Spreadsheet (includes detailed fueling data)

Animation, 2 minute intervals.

gas analysis
Flue gas

Testo graph
Graph from Testo analyzer. 30 second sampling intervals.
The green line tracks the CO/CO2 ratio.

TESTO Excel data file
Raw data file

Opacity curve started at 10 minutes, just after fuel loaded. Did not capture the kindling phase.

fuel load
Fuel load.
Stacking is North-South, with largest pieces on bottom, onto a coal bed.
fuel load
Fuel load. Pieces are ordered smallest to largest, left to right. Stacking was from right to left (largest pieces on the bottom).

burn sequence
Burn sequence.

This page was updated on March 7, 2010
This page was created on February 27, 2010