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Analysis of combustion of liquefied petroleum gas in a porous radiant burner

机译：多孔辐射燃烧器中液化石油气燃烧的分析

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This article deals with the combustion of liquefied petroleum gas (LPG) (40% C_3H_8 + 60% C_4H_(10) by volume) in a planar silicon carbide porous radiant burner (PRB). With volumetric radiative source term needed in the solid-phase energy equation computed using the finite volume method, the gas- and the solid-phase energy equations, continuity equation, species conservation equation and ideal gas equation are simultaneously solved. The energy equations are solved using the finite volume method. The species conservation equation, and the species diffusion and the heat generation terms appearing in the gas-phase energy equation are computed using the solver Cantera. The chemical kinetics consists of 111 species and 784 reactions. Comparisons are made for the stability range of LPG with CH_4 as well as with the combustion of LPG in the free-flame mode. For LPG combustion in the PRB, variations of species production rate, heat release rate, CO emissions, radiative heat flux and the total heat flux are analyzed. With LPG combustion in the PRB, the total heat flux is more than that of combustion of CH_4 in the PRB, and also LPG combustion in the free-flame mode. The radiative heat flux with LPG in the PRB, is also more than that with CH_4. CO emission with LPG combustion in the PRB is much lower than its combustion in the free-flame mode.
机译：本文涉及在平面碳化硅多孔辐射燃烧器（PRB）中燃烧液化石油气（LPG）（按体积计40％C_3H_8 + 60％C_4H_（10））的燃烧。利用有限体积法计算固相能量方程所需的体积辐射源项，同时求解了气相和固相能量方程，连续性方程，物种守恒方程和理想气体方程。使用有限体积法求解能量方程。使用求解器Cantera计算物种守恒方程，以及气相能量方程中出现的物种扩散和生热项。化学动力学由111种和784个反应组成。比较了带有CH_4的LPG的稳定范围以及在自由燃烧模式下LPG的燃烧情况。对于PRB中的LPG燃烧，分析了物种产生速率，放热速率，CO排放，辐射热通量和总热通量的变化。在PRB中进行LPG燃烧时，总热通量大于PRB中CH_4燃烧时的总热通量，并且在自由火焰模式下的LPG燃烧时的总热通量也更大。 PRB中LPG的辐射热通量也比CH_4中的辐射热通量大。 PRB中LPG燃烧产生的CO排放量远低于自由燃烧模式下的燃烧排放。

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