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螺旋板换热器轴向错流通道湿法捕尘拟均相模型

CIESC Journal(2014)

Cited 23|Views0
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Abstract
提出了螺旋板换热器轴向错流通道冷却冷凝湿法除尘的方法,指出了 PM2.5在尾气对流传热传质边界层内热泳和伴随水蒸气冷凝的扩散泳运动特征和冷凝液膜吸收除尘机理并建立了拟均相模型,获得了 PM2.5浓度衰减函数和以冷凝通量nw为参数的捕尘效率模型。通过“三传”类比获得了从尾气流速求取模型参数的方法,并通过恒壁温条件下冷却冷凝实验数据验证了模型参数计算方法的正确性,结果表明水蒸气组分扩散体积通量即 PM2.5扩散泳速度Vw是控制性参数,其值在20~40 mm·s-1范围。
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Key words
spiral plate exchanger,dust removal,wet process,pseudo-homogeneous,axial-cross
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