气布比英语:air-to-cloth ratio),是集尘器流过空气滤清器之空气的体积流率(常用单位为米³/分,国际标准制单位为米³/秒)除以滤网面积(单位为米²)后的比值:

气布比和速度有相同的因次,因此也称为也称为过滤风速

气布比依粉尘的浓度及空气滤清器特性有关,一般介于1.5至3.5米/分之间。

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