Test result: CookClean CookMate
Water boiling test (WBT)
Stove and fuel
Stove characteristics
Batch loaded, Household, Non-traditional, Portable, Pot skirt
Fuel type
Charcoal
Fuel description
Produced from neem tree (Azadirachta indica) chopped in average dimensions of 5.4 cm x 2.9 cm
Fuel moisture content
0.91%
Fuel net calorific value
28.2 MJ/kg
Test information
Test details
WBT 4.2.3
Reporting type
Third party
Country
Ghana
Year performed
2015
Test environment
Lab
Altitude
not available
Number of replicate tests
3
Source information
Citation
not available
Source data
not available
Test result IWA tiers of performance
Show subtiers
0
Emissions
2
Efficiency
unrated
Indoor emissions
unrated
Safety
Performance metrics
IWA emissions  
Metric Value SD (σ) Cv
IWA high power CO 31.682 g/MJ-del 5.4503 0.17
IWA high power PM 440337.0 mg/MJ-del 263379.0 0.6
IWA low power CO 0.106 g/min/L 0.1188 1.12
IWA low power PM 1219.3 mg/min/L 440.19 0.36
IWA efficiency  
Metric Value SD (σ) Cv
IWA low power specific consumption 0.0092 MJ/min/L 0.0074 0.8
IWA high power thermal efficiency 25.7% 0.0125 0.0
IWA indoor emissions  
Metric Value SD (σ) Cv
IWA CO 1.2272 g/min 0.2196 0.18
IWA PM 17152.0 mg/min 11609.0 0.68
Efficiency, energy consumption and fuel use
Metric Value SD (σ) Cv
Specific energy consumption 8627.9 kJ/task 2103.2 0.24
Fuel consumed 307.26 g/task 74.901 0.24
Hot start thermal efficiency 26.99% 1.63 0.06
Cold start thermal efficiency 24.41% 1.06 0.04
Simmer thermal efficiency 24.83% 16.4 0.66
Specific fuel consumption cold start 49.141 g/L 5.2992 0.11
Specific fuel consumption hot start 40.746 g/L 1.4997 0.04
Temp-corrected specific consumption cold start 50.284 g/L 5.459 0.11
Temp-corrected specific consumption hot start 43.185 g/L 2.4562 0.06
Burning rate cold start 5.0873 g/min 0.4908 0.1
Burning rate hot start 5.5642 g/min 0.6226 0.11
Burning rate simmer 1.4846 g/min 1.0844 0.73
Specific fuel consumption simmer 14.718 g/L 11.881 0.81
Output
Metric Value SD (σ) Cv
Cold start firepower 2380.9 W 229.7 0.1
Hot start firepower 2604.0 W 291.4 0.11
Simmer firepower 694.81 W 507.51 0.73
Time to boil cold start 46.667 min 0.5774 0.01
Mean time to boil 42.784 min 1.664 0.04
Time to boil hot start 35.667 min 2.5166 0.07
Temp-corrected time to boil cold start 47.753 min 0.8857 0.02
Temp-corrected time to boil hot start 37.815 min 3.3312 0.09
Turn down ratio 4.6441 2.1954 0.47
Emissions
Metric Value SD (σ) Cv
Total CO emissions cold start 46.291 g 9.7581 0.21
Total CO2 emissions cold start 479.36 g 163.61 0.34
Total PM2.5 emissions cold start 874510.0 mg 654720.0 0.75
Total CO emissions hot start 51.884 g 7.1742 0.14
Total CO2 emissions hot start 537.85 g 162.45 0.3
Total PM2.5 emissions hot start 543635.0 mg 288307.0 0.53
Total CO emissions simmer 21.305 g 22.586 1.06
Total CO2 emissions simmer 271.88 g 460.81 1.69
Total PM2.5 emissions simmer 254770.0 mg 72812.0 0.29