Table 2.

Energy and efficiency of different fuel types typically used in India (46)

Fuel Type	Stove Types	Energy (MJ/kg)	Thermal efficiencyb
Wood	Three stone	15.1–15.5a	0.18–0.29
	Traditional mud
	Improved vented mud
	Improved vented ceramic
	Improved metal
Charcoal	Angethic	25.7	0.18
LPG	LPG Stove	45.8	0.54

^aDepending on wood type (e.g. acacia, eucalyptus, roots).

^bThermal efficiency is a combination of combustion and heat transfer efficiency.

^cGalvanized iron bucket combined with mud/concrete and a grate.