Test result: kuniokoa™
Water boiling test (WBT)
Stove and fuel
Stove
Stove characteristics
Non-traditional, Household, Portable, Side-feed, Rocket
Fuel type
Wood
Fuel moisture content
9.5%
Fuel net calorific value
19313.69 MJ/kg
Test information
Test details
not available
Testing organization
Reporting type
Self reported
Country
United States
Year performed
2017
Test environment
Lab
Altitude
26 m
Number of replicate tests
5
Source information
Citation
not available
Source data
Test result IWA tiers of performance
Show subtiers
3
Emissions
2
Efficiency
2
Indoor emissions
3
Safety
Performance metrics
IWA emissions  
Metric Value SD (σ) Cv
IWA high power CO 1.9069 g/MJ-del 0.202 0.11
IWA high power PM 103.94 mg/MJ-del 6.692 0.06
IWA low power CO 0.0334 g/min/L 0.0019 0.06
IWA low power PM 1.4175 mg/min/L 0.14 0.1
IWA efficiency  
Metric Value SD (σ) Cv
IWA high power thermal efficiency 40.012% 0.01254 0.0
IWA low power specific consumption 0.0285 MJ/min/L 0.00115 0.04
IWA indoor emissions  
Metric Value SD (σ) Cv
IWA CO 0.1485 g/min 0.0168 0.11
IWA PM 8.0657 mg/min 0.6612 0.08
Efficiency, energy consumption and fuel use
Metric Value SD (σ) Cv
Hot start thermal efficiency 38.64% 0.0 0.0
Cold start thermal efficiency 40.355% 1.14558 0.03
Simmer thermal efficiency 31.33% 0.577 0.02
Specific fuel consumption cold start 56.034 g/L 2.167 0.04
Specific fuel consumption hot start 56.3 g/L 0.0 0.0
Temp-corrected specific consumption cold start 54.1197 g/L 2.137 0.04
Temp-corrected specific consumption hot start 56.68 g/L 0.0 0.0
Temp-corrected specific energy cons cold start 1045.27 kJ/L 41.27 0.04
Temp-corrected specific energy cons hot start 1094.8 kJ/L 0.0 0.0
Burning rate cold start 11.61 g/min 0.0887 0.01
Burning rate hot start 278.13 g/min 0.0 0.0
Burning rate simmer 6.256 g/min 0.2259 0.04
Specific fuel consumption simmer 67.733 g/L 2.7153 0.04
Temp-corrected specific energy cons simmer 1308.6 kJ/L 52.576 0.04
Output
Metric Value SD (σ) Cv
Cold start firepower 3221.917 W 42.83 0.01
Hot start firepower 3263.575 W 0.0 0.0
Simmer firepower 2014.66 W 72.542 0.04
Time to boil cold start 27.658 min 0.7636 0.03
Time to boil hot start 27.433 min 0.0 0.0
Temp-corrected time to boil cold start 26.714 min 0.771 0.03
Temp-corrected time to boil hot start 27.619 min 0.0 0.0
Turn down ratio 1.5941 0.078 0.05
Safety metrics
Metric Value SD (σ) Cv
Total safety score 88.5 points
Flames or fuel exiting chamber rating 3.0
Flames surrounding cookpot rating 4.0
Chimney shielding rating 4.0
Temperature of operational construction rating 4.0
Heat transmission to surroundings rating 4.0
Surface temperature rating 3.0
Obstructions near cooking surface rating 4.0
Containment of fuel rating 3.0
Cookstove tipping rating 3.0
Sharp edges and points rating 4.0