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Design and Analysis of Particulate Matter Air-Microfluidic Grading Chip Based on MEMS
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Design and Analysis of Particulate Matter Air-Microfluidic Grading Chip Based on MEMS
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Journal Article
Design and Analysis of Particulate Matter Air-Microfluidic Grading Chip Based on MEMS
2019
Overview
Atmospheric particulate matter (PM) air-microfluidic grading chip is the premise for realizing high-precision PM online monitoring. It can be used as an indispensable basis for identifying pollution sources and controlling inhalable harmful substances. In this paper, based on aerodynamic theory and COMSOL numerical analysis, a two-stage PM air-microfluidic grading chip with cut-off diameters of 10 μm and 2.5 μm was designed. The effects of chip inlet width (W), main flow width (L), second channel width (S), and split ratio (Q1/Q) on PM classification efficiency were analyzed, and optimized design parameters were achieved. The collection efficiency curves were plotted according to PM separation effects of the chip on various particle sizes (0.5–15 μm). The results indicate that the chip has good separation effect, which provides an efficient structural model for the PM micro-fluidization chip design.
Publisher
MDPI AG,MDPI
Subject
