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无尘车间技术文档

洁净车间积尘和阻力有什么关系

作者:无尘车间 文章来源:krockwinnipeg.com 发表时间:2021-02-09 06:38:23

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此外还有一种情况,某些粗效洁净车间如以玻璃丝为原料的,它们在积尘初始时,其过滤效率和其他洁净车间一样,随积尘量增加而增高。但积尘到一定程度后,将发生“反弹”现象,即原已被阻留下的尘粒又从纤维上脱落下来,并穿透过去。也就是说积尘到一顶程度后,阻力继续增长,但过滤效率都有所下降,因此也不宜于继续使用。按照美国采暖制冷空调协会的规定,当积尘到其相应过滤效率下降为最高效率的85%时,洁净车间则应予更换。此时,洁净车间洁净车间在额定风量下的阻力称之为终阻力。原则来说,洁净车间积尘到应予更换时,它在额定流量下的阻力,即为该洁净车间的终阻力。