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本文对含有Botryococcus Braunii UTEX 572的微生物碳捕获电池阴极室内的光合有效辐射(Photosyntheticallyactive radiation,PAR)分布建立数学模型。采用离散坐标法(Discrete Ordinate Method,DOM)求解一维稳态辐射传递方程(Radiative transfer equation.RTE),使用SMARTS(the Simple Model for Atmospheric Transmission of Sunshine)模式对边界条件进行计算。在所建模型基础上,对400～800 nm波长范围的阴极室内PAR分布情况进行计算,并结合Botry-ococcusBraunii UTEX 572的生长动力学对CO_2的局部吸收速率进行研究。同时对不同散射处理方法,气泡含量以及藻类浓度对CO_2捕获速率的影响进行对比,为改善光在微生物碳捕获燃料电池阴极室的分布和阴极室优化设计提供依据。
In this paper, a mathematical model of photosynthetically active radiation (PAR) distribution in the cathode compartment of a microbial carbon trapping cell containing Botryococcus Braunii UTEX 572 was established. The Discrete Ordinate Method (DOM) was used to solve the one-dimensional Radiative Transfer Equation (RTE) and the boundary conditions were calculated using SMARTS (the Simple Model for Atmospheric Transmission of Sunshine). Based on the model established, the PAR distribution in the cathode of 400-800 nm was calculated, and the CO 2 absorption rate was studied in combination with the growth kinetics of Botryococcus Blumeii UTEX 572. At the same time, the influence of different scattering treatment methods, bubble content and algae concentration on CO 2 capture rate were compared to provide the basis for improving the distribution of light in the cathode chamber of microbial carbon capture fuel cell and the cathode chamber design.