进气流量对PM<sub>2.5</sub>切割器捕集效率的影响

doi:10.3969/j.issn.1000-1158.2021.04.20

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Abstract Generally, the commercial cutters have a fixed working flow rate range, if the actual gas flow rate into the cutter is not in this fixed range, deviation of the capture efficiency might be occurred. In this study, by using the cutter capture efficiency evaluation system based on static box method, the capture efficiency for two domestic and imported PM2.5 cutters were evaluated. The influences of the standard working flow of the cutter and the flow of 70%, 80%, 120% and 130% on the trapping efficiency of the PM2.5 cutter were studied. The results showed that with the change of inlet flow rate, the change trend of Da50 is opposite. The distribution range of Da50 is 140% to 80% of the value under standard operating flow. The geometrical standard deviations of the penetrating curve staynearly unchanged, while the change is not more than 0.9% compared with the value under standard operating flow. This study has scientific value for further regulating the manufacture and the usage of cutter.

Key words： metrology PM2.5 cyclone inlet flow collection efficiency cut diameter

Received: 19 May 2020 Published: 20 April 2021

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TB99

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	Articles by authors
	LIU Jia-qi
	ZHANG Guo-cheng
	ZHAO Xiao-ning
	WU Dan
	JING Wen-jie

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LIU Jia-qi,ZHANG Guo-cheng,ZHAO Xiao-ning, et al. The Influence of Air Inlet Flow Rate on the Capture Efficiency of PM2.5 Cutter[J]. Acta Metrologica Sinica, 2021, 42(4): 532-536.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2021.04.20 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2021/V42/I4/532

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