Diffusive burning of blended peroxy-fuels: Some experimental results

•Diffusive burning characteristics four Blended Peroxy-Fuels (BPF) are studied.•Burning rates of BPF are 2 to 10 times declined w.r.t. their pure forms.•The visible flame lengths of BPF are 50% reduced.•Correlations between burning rates and dilution proportions are developed.•Dampening of energetic properties of peroxy-fuels is described.

Dampening of energetic properties and the effects of blending proportions of isododecane on the diffusive burning behaviour of peroxy-fuels are experimentally studied. Blended peorxy-fuels are obtained by adding isododecane in the proportions of 25 wt.%, 50 wt.% and 75 wt.%, respectively, in technical pure peroxy-fuels. The fuels were burned in form of pool fires with diameters 0.02 m ≤ d ≤ 1 m. The mass burning rates and relative flame lengths are found to be weakened with increasing diluent proportions. By measuring the mass burning rates and visible flame lengths of pool fires of different samples of fuel blends an optimum blending criterion is developed. Furthermore, it is shown that the dilution proportions and flame characteristics can be correlated by empirical equations.