Test result: Graminheet Natural Draft Biomass Cook Stove
Water boiling test (WBT)
Stove and fuel
Stove description
Biomass / Natural draft / Metallic / Single pot
Stove characteristics
Household, Portable, Side-feed, Heating, Rocket, Ceramic-lined, Non-traditional
Fuel type
Wood
Fuel description
Average Hardwood (Gross Calorific Value = 19734 KJ/Kg)
Fuel moisture content
10.0%
Fuel net calorific value
not available
Test information
Test details
LEMS with PM 2.5 gravimetric measurement, CO measurement with electrochemical cell sensor and CO2 measurement with NDIR sensor
Reporting type
Third party
Country
Nepal
Year performed
2019
Test environment
Lab
Altitude
not available
Number of replicate tests
3
Source information
Source data
not available
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 5.4 g/MJ-del
IWA high power PM 510.18 mg/MJ-del
IWA low power CO 0.06 g/min/L
IWA low power PM 7.07 mg/min/L
IWA efficiency  
Metric Value SD (σ) Cv
IWA high power thermal efficiency 25.39%
IWA low power specific consumption 0.049 MJ/min/L
IWA indoor emissions  
Metric Value SD (σ) Cv
IWA CO 0.39 g/min
IWA PM 40.37 mg/min
Safety metrics
Metric Value SD (σ) Cv
Total safety score 81.5 points