Test result
Water boiling test (WBT)
Stove and fuel
Stove description
A fire surrounded by a mud and sawdust wall that creates a 10 mm vertical channel around the sunken pot.
Stove characteristics
Traditional, Non-traditional
Fuel type
Wood
Fuel moisture content
not available
Fuel net calorific value
not available
Test information
Test details
WBT-3.0, 5 Liters Boiled
Testing organization
Reporting type
Not available
Country
United States
Year performed
2010
Test environment
Lab
Altitude
not available
Number of replicate tests
3
Test result IWA tiers of performance
Show subtiers
unrated
Emissions
unrated
Efficiency
unrated
Indoor emissions
unrated
Safety
Performance metrics
IWA emissions  
Metric Value SD (σ) Cv
IWA high power CO 5.709 g/MJ-del
IWA high power PM 727.887 mg/MJ-del
IWA low power CO 0.164 g/min/L
IWA low power PM 3.899 mg/min/L
IWA efficiency  
Metric Value SD (σ) Cv
IWA high power thermal efficiency 29.0805963%
IWA low power specific consumption 0.027 MJ/min/L
IWA indoor emissions  
Metric Value SD (σ) Cv
IWA CO 0.87 g/min
IWA PM 71.504 mg/min
Efficiency, energy consumption and fuel use
Metric Value SD (σ) Cv
Specific energy consumption 13100.0 kJ/task
Fuel consumed 754.0 g/task
Hot start thermal efficiency 30.6%
Cold start thermal efficiency 27.6%
Output
Metric Value SD (σ) Cv
Cold start firepower 7801.0 W
Hot start firepower 8004.0 W
Simmer firepower 2078.0 W
Mean time to boil 16.0 min
Emissions
Metric Value SD (σ) Cv
CO emissions factor (2) 42.78397061 g/kg fuel
CO emissions rate 0.869934327 g/min