Test result: New Lao Stove
Water boiling test (WBT)
Stove and fuel
Stove description
Geres, low-moisture charcoal fuel
Stove characteristics
Ceramic-lined, Non-traditional
Fuel type
Charcoal
Fuel description
Charcoal, dry
Fuel moisture content
0.043%
Fuel net calorific value
28.2 MJ/kg
Test information
Test details
WBT 4.1.2, 5 Liters of water
Testing organization
Reporting type
Third party
Country
United States
Year performed
2012
Test environment
Lab
Altitude
100 m
Number of replicate tests
3
Test result IWA tiers of performance
Show subtiers
0
Emissions
1
Efficiency
0
Indoor emissions
unrated
Safety
Performance metrics
IWA emissions  
Metric Value SD (σ) Cv
IWA low power CO 0.15 g/min/L
IWA low power PM 0.97 mg/min/L
IWA high power CO 21.65 g/MJ-del 4.25 0.2
IWA high power PM 507.0 mg/MJ-del 60.0 0.12
IWA efficiency  
Metric Value SD (σ) Cv
IWA low power specific consumption 0.026 MJ/min/L
IWA high power thermal efficiency 24.8% 2.3 0.09
IWA indoor emissions  
Metric Value SD (σ) Cv
IWA CO 1.431 g/min
IWA PM 24.508 mg/min
Efficiency, energy consumption and fuel use
Metric Value SD (σ) Cv
Fuel consumed 88.0 g/task
Cold start thermal efficiency 17.8% 2.1 0.12
Hot start thermal efficiency 31.7% 2.5 0.08
Output
Metric Value SD (σ) Cv
Mean time to boil 22.3 min 0.9 0.04
Cold start firepower 5864.0 W 377.0 0.06
Hot start firepower 6934.0 W 650.0 0.09
Simmer firepower 1856.0 W 126.0 0.07
Emissions
Metric Value SD (σ) Cv
PM2.5 emissions factor (2) 2.24 g/kg fuel
CO emissions factor (2) 169.275 g/kg fuel
CH4 emissions factor (2) 2.27965 g/kg fuel
PM2.5 emissions rate 19.64571307 mg/min
CO emissions rate 1.431 g/min