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- W4220847191 abstract "Fuel in aircraft fuel tanks, as well as some industrial processes, are under conditions of reduced pressure. However, few models have been proposed for estimating the influence of the initial pressure on flammability limits at subatmospheric pressures. A model to describe this influence was derived in this study according to the assumption that the heat release rate is equal to the heat loss rate. Several assumptions used in the model simplification process were verified to accord with real situations. The experimental data on seven gaseous fuels, namely methane, ethane, ethylene, propane, propylene, n -butane, and n -butylene, were analysed to validate the proposed model. In general, the simulation results accord well with the data on flammability limits measured at subatmospheric pressures. In its extension to systems functioning at elevated pressures, the proposed model accurately estimated the lower flammability limit data for atmospheric pressures up to 30 MPa and the upper flammability limit (UFL) for atmospheric pressures from 0.1 to 0.9 MPa. However, large deviations were noted between the estimated and actual UFLs for atmospheric pressures from 0.1 to 24.9 MPa. Nevertheless, the proposed model accurately describes the variation trends of flammability limits over a wide pressure range. • A theoretical model was proposed to describe the initial pressure influence on flammability limits at reduced pressure. • This model was developed according to the assumption that the heat release rate is equal to the heat loss rate. • The model was also verified to accord well with the LFL for pressures up to 300 bar and UFL for pressures from 1 to 9 bar." @default.
- W4220847191 created "2022-04-03" @default.
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- W4220847191 date "2022-07-01" @default.
- W4220847191 modified "2023-10-05" @default.
- W4220847191 title "Mathematical model for describing the influence of initial pressure on the flammability limits of light hydrocarbons at subatmospheric pressures" @default.
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- W4220847191 doi "https://doi.org/10.1016/j.jlp.2022.104776" @default.
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