Test result: Upesi Portable
Water boiling test (WBT)
Stove and fuel
Stove description
Upesi Portable, wood fuel (Wet)
Stove characteristics
Ceramic-lined, Non-traditional
Fuel type
Wood
Fuel description
Red Oak (Quercus rubra), wet
Fuel moisture content
0.217%
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
unrated
Emissions
unrated
Efficiency
unrated
Indoor emissions
unrated
Safety
Performance metrics
IWA emissions  
Metric Value SD (σ) Cv
IWA high power CO 18.4 g/MJ-del 2.65 0.14
IWA high power PM 2455.0 mg/MJ-del 620.0 0.25
IWA low power CO 0.178 g/min/L
IWA low power PM 17.2 mg/min/L
IWA efficiency  
Metric Value SD (σ) Cv
IWA high power thermal efficiency 20.7% 2.7 0.13
IWA low power specific consumption 0.049 MJ/min/L
IWA indoor emissions  
Metric Value SD (σ) Cv
IWA CO 0.973 g/min
IWA PM 112.458 mg/min
Efficiency, energy consumption and fuel use
Metric Value SD (σ) Cv
Fuel consumed 233.0 g/task
Hot start thermal efficiency 22.9% 1.8 0.08
Cold start thermal efficiency 18.4% 3.6 0.2
Output
Metric Value SD (σ) Cv
Cold start firepower 4834.0 W 1107.0 0.23
Hot start firepower 4741.0 W 518.0 0.11
Simmer firepower 3256.0 W 423.0 0.13
Mean time to boil 42.6 min 4.4 0.1
Emissions
Metric Value SD (σ) Cv
CH4 emissions factor (2) 3.921 g/kg fuel
CO emissions factor (2) 73.4875 g/kg fuel
PM2.5 emissions factor (2) 8.2275 g/kg fuel
CO emissions rate 0.973 g/min
PM2.5 emissions rate 111.9003995 mg/min