Analytical modeling of lycopodium-propane dual-fuel combustion system in premixed mode in counter-flow configuration

Shahin Akbari, Saeed Tashakori, Ali Mohammad Ranjbar, Javad Afshar Jahanshahi, Sadegh Sadeghi, Mehdi Bidabadi and Fei Xu

Renewable Energy, 2021, vol. 165, issue P1, 783-798

Abstract: In this paper, an analytical study was conducted on two possible cases of dual-fuel combustion systems operating in premixed mode in counter-flow configuration fueled simultaneously with lycopodium particles/air and propane/air. Combustion behaviors of two distinct cases were discussed whose difference is whether there is an overlap between the reaction zone formed by combustion of propane and that formed by combustion of lycopodium particles. Non-dimensional forms of mass and energy conservation equations were formulated and analytically solved using Matlab and Mathematica. The derived analytical solution was first validated against experimental data and good agreement was achieved. Then, the profiles of temperature and species distributions for the two cases were discussed to evaluate the effects of overlap between reaction zones. It was found that in both cases, dual fuel mode can be considered as an effective technique for improving the combustion characteristics of lycopodium particles. However, the flame temperature in case 1 is higher than that in case 2. Eventually, influences of fuel and oxidizer Lewis numbers and particle size on the flame temperature and position were parametrically analyzed. Furthermore, flame temperature and position inversely varied with Lewis number of reactants and particle size.

Keywords: Dual-fuel combustion; Lycopodium/air mixture; Propane/air mixture; Analytical study; Premixed mode; Flame (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:165:y:2021:i:p1:p:783-798

DOI: 10.1016/j.renene.2020.10.033

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