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基于结构协同的PM_(2.5)粒子切割器性能提升
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作者 邹亚雄 任晓庆 +3 位作者 刘伟光 刘巍 张泽武 闫骏 《中国粉体技术》 CAS CSCD 2022年第5期113-127,共15页
为提高VSCC型PM_(2.5)粒子切割器对颗粒物的分离能力,采用Sigmoid-8092、Logistic和Gompertz等3种常用的S型函数对实验数据进行回归分析并对比拟合精度,借助实验手段研究切割器不同结构对50%切割粒径Da_(50)和几何标准偏差σ_(g)的影响... 为提高VSCC型PM_(2.5)粒子切割器对颗粒物的分离能力,采用Sigmoid-8092、Logistic和Gompertz等3种常用的S型函数对实验数据进行回归分析并对比拟合精度,借助实验手段研究切割器不同结构对50%切割粒径Da_(50)和几何标准偏差σ_(g)的影响,基于结构协同的方法改进切割器性能并进行实验验证。结果表明:Sigmoid-8092函数的线性回归拟合度R^(2)≥0.991,拟合精度相比其他2种较高;改进后的切割器将VSCC型的Da_(50)由2.32~2.52μm调整到2.52~2.57μm,σ_(g)由1.15~1.30缩小至1.15~1.25。Sigmoid-8092方程可作为切割曲线拟合的函数形式;单因素结构变量难以实现优化σ_(g)的同时不改变Da_(50),协同切割器进口直径D_(in)和锥底直径B能够改进切割器性能;提高回旋段雷诺数Re_(ann)有利于σ_(g)的改善,提高Re_(ann)的有效方式是减小D_(in)的值;确定D_(in)尺寸时可采用等同雷诺数方法。 展开更多
关键词 粒子切割器 切割性能 结构协同 等同雷诺数法
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Estimation of the Collection Efficiency of the AxialFlow Cyclone Dust Collector with the Fixed Guide Vanes 被引量:3
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作者 Akira OGAWA(Department of Mechanical Engineering, College of Engineering, Nihon University T-963, Tokusada,Tamura-machi, Kooriyama-shi, Japan)Tetzuya IWANAMI Hideki SHONO(Mikuni Comp., Japan) 《Journal of Thermal Science》 SCIE EI CAS CSCD 1997年第1期58-65,共8页
In order to estimate the cut-size Xc and the mechanically balanced particles in the axial flow cyclonewith the slit-separation method, the tangential velocity distributions were calculated by the finitedifference meth... In order to estimate the cut-size Xc and the mechanically balanced particles in the axial flow cyclonewith the slit-separation method, the tangential velocity distributions were calculated by the finitedifference method. In comparison of the calculated results of the total collection efficiency with theexperimental results, the calculated results showed a little higher than the experimental results due tothe re-entrainment of the collected particles by turbulence. The effect of the slit for promoting thecollection efficiency was not recognized. 展开更多
关键词 axial flow cyclone finite difference method eddy kinematic viscosity tangential velocity mechanically balanced particle collection efficiency particle size distribution
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