Test result: Upesi Portable
Water boiling test (WBT)
Stove and fuel
Stove description
Upesi Portable, wood fuel (Dry)
Stove characteristics
Ceramic-lined, Non-traditional
Fuel type
Wood
Fuel description
Wood, dry
Fuel moisture content
not available
Fuel net calorific value
17.7 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
not available
Number of replicate tests
3
Test result IWA tiers of performance
Show subtiers
1
Emissions
0
Efficiency
0
Indoor emissions
unrated
Safety
Performance metrics
IWA emissions  
Metric Value SD (σ) Cv
IWA high power CO 10.93 g/MJ-del 1.2 0.11
IWA high power PM 914.0 mg/MJ-del 140.0 0.15
IWA low power CO 0.116 g/min/L
IWA low power PM 6.267 mg/min/L
IWA efficiency  
Metric Value SD (σ) Cv
IWA high power thermal efficiency 23.2% 1.95 0.08
IWA low power specific consumption 0.067 MJ/min/L
IWA indoor emissions  
Metric Value SD (σ) Cv
IWA CO 0.702 g/min
IWA PM 50.25 mg/min
Efficiency, energy consumption and fuel use
Metric Value SD (σ) Cv
Fuel consumed 223.0 g/task
Hot start thermal efficiency 23.8% 1.7 0.07
Cold start thermal efficiency 22.6% 2.2 0.1
Output
Metric Value SD (σ) Cv
Cold start firepower 5445.0 W 377.0 0.07
Hot start firepower 5489.0 W 122.0 0.02
Simmer firepower 4552.0 W 417.0 0.09
Mean time to boil 28.0 min 1.95 0.07
Emissions
Metric Value SD (σ) Cv
CH4 emissions factor (2) 2.154 g/kg fuel
CO emissions factor (2) 41.3325 g/kg fuel
PM2.5 emissions factor (2) 2.8975 g/kg fuel
CO emissions rate 0.702 g/min
PM2.5 emissions rate 49.08700118 mg/min