Following the part 1, this paper discusses about heat release, combustion efficiency, mole weight and density of burned gas of methanol, methane, propane and Douglas Fir in fire compartment and about the difference among them. Consequently on the assumption of previous and this paper, heat release per gram of oxygen in air consumed and combustion efficiency of methanol and Douglas Fir decrease, as equivalence ratio φ (the fuel-air mass ratio normalized by the stoichiometric fuel-air mass ratio) increases, because of the consumption of heat in their latent heat of non-reacted fuel. The combustion efficiency of methane shows relatively good relation to the previous work.
