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Details van artikel 6 van 14 gevonden artikelen
| Titel: |
Design and Test of 2.5 μ m Cutoff Size Inlet Based on a Particle Cup Impactor Configuration |
| Auteur: |
Kim, H. T. Han, Y. T. Kim, Y. J. Lee, K. W. Chun, K. J. |
| Verschenen in: |
Aerosol science and technology |
| Paginering: | Jaargang 36 (2002) nr. 2 pagina's 136-144 |
| Jaar: |
2002-02 |
| Inhoud: |
Based on the particle cup impactor configuration, an inlet for sampling fine particles smaller than 2.5 μm in diameter was designed for operation at a flow rate of 25 l/min. To determine the optimal dimensions of the particle cup impactor applicable to the PM 2.5 inlet, calibration experiments were carried out at wind velocities of 2 and 24 km/h in a wind tunnel. It was noted that the particle cup impactor having an impaction nozzle diameter of 3.2 mm and the nozzle-to-cup spacing of 3.6 mm yielded a sharp size cutoff. Supplementary experiments were conducted on sampling performance with the inlet having the optimally selected configuration at a near-zero wind speed in the test chamber. Results of the tests showed the inlet had a cutoff size of 2.43 μm in aerodynamic diameter, at 25 l/min, and that particles larger than 2.5 μm were trapped in the cup. Additional experiments covering a flow rate between 10 and 40 l/min with particle sizes between 0.8 and 4.3 μm were conducted in the test chamber. A field test was performed to examine the PM 2.5 inlet in real situations. The performance indicated that the inlet design met the basic requirements of fine-particle sampling. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 6 van 14 gevonden artikelen
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