不同类型颗粒物切割器采样流量与切割粒径关系研究

doi:10.3969/j.issn.1000-1158.2023.09.22

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Abstract The method of static box was used to explore the influence of sampling flow (Q) on the cut size D50 of particulate matter cutter,including a variety of cyclone cutters of BGI and an impaction-type cutter of Chinese brand.The results showed that no matter which type cyclone cutter,the changes of sampling flow resulted in translation of collection efficiency curve.And the greater the flow rate,the smaller D50.In addition, it was found that the PM1.0,PM2.5 and PM4.0 modes could be switched by changing the flow rate in the same whirlwind cutter,and the sampling flow rate was approximately inversely proportional to D50.For the impaction-type cutter,the square root of D50 was approximately inversely proportional to the sampling flow.It could be used as a rapid evaluation method to quickly estimate the corresponding D50 according to the actual flow rate,which has certain application value.

Key words： metrology particulate matter cutter cutting size sampling flow static box method

Received: 21 August 2022 Published: 21 September 2023

PACS:

TB99

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	Articles by authors
	TIAN Ying
	ZHANG Guo-cheng
	LIU Jia-qi
	SHEN Shang-yi
	WU Dan
	PAN Yi-ting
	JING Wen-jie

Cite this article:

TIAN Ying,ZHANG Guo-cheng,LIU Jia-qi, et al. Study on the Relationship Between Sampling Flow Rate and Cut Size of Different Types of Particulate Matter Cutters[J]. Acta Metrologica Sinica, 2023, 44(9): 1467-1472.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2023.09.22 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2023/V44/I9/1467

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