20.500.12556/RUL-119391 Surrogate model for improved simulations of small-scale sludge incineration plants Although various modelling approaches exist for the simulation of solid fuel combustion, no specific model hasbeen developed for the accurate description of gas-phase combustion in small-scale combustion devices. This isparticularly limiting in scenarios when volatile-rich, complex and incompletely described solid fuels such assewage sludge are used. To address this issue, an accurate description of combustion from the fuel bed onwardsis required as well as an improved description of emitted volatiles. This paper introduces an innovative surro-gate-based combustion model that combines data on sludge devolatilisation and measured combustion char-acteristics to offer a new surrogate composition. The composition includes heavy hydrocarbon species to ac-curately describe combustion evolution. A sensitivity analysis revealed that H2contributes significantly tocombustion evolution, while the most robust surrogate composition is obtained when ethanol is used as a leadingrepresentative of heavier hydrocarbons. The model can be used to produce suitable surrogates for the mainsludge combustion interval, offering the required improvement in fuel descriptions and accuracy of simulationsin the vicinity of the fuel bed. Hence, this model is particularly suitable for the optimisation of temperature, heatrelease rate, and concentration field in combustion chambers with limited volumes. sewage sludge combustion detailed reaction kinetics volatiles 3D CFD numerical simulations odpadni mulj zgorevanje detajlna kemijska kinetika volatili 3D CFD numerične simulacije true false false Angleški jezik Slovenski jezik Neznano 2020-09-08 10:34:53 2020-09-08 10:34:59 2022-08-31 03:52:53 0000-00-00 00:00:00 2020 0 0 Str. 1-15 Vol. 280 Nov. 2020 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 519.876.5:662.581(045) 0016-2361 10.1016/j.fuel.2020.118422 25534979 RAZ_Znidarcic_Anton_2020.pdf RAZ_Znidarcic_Anton_2020.pdf 1 36A975CE2019F7E8A108639AAA0CDB16 1d8b8a62f64e6671510383f21dc37b091319867038e3635f9c7de68634985ef0 d0cec99d-a1b9-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=134103 https://www.sciencedirect.com/science/article/pii/S0016236120314186?via%3Dihub 1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=134102 Fakulteta za strojništvo 0 0 0