The scanning flow DMA

被引：18

作者：

Collins, DR ^{[1
]}

Nenes, A ^{[1
]}

Flagan, RC ^{[1
]}

Seinfeld, JH ^{[1
]}

机构：

[1] CALTECH, Dept Chem Engn, Pasadena, CA 91125 USA

来源：

JOURNAL OF AEROSOL SCIENCE | 2000年 / 31卷 / 10期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0021-8502(99)00576-5

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A new method of DMA operation has been implemented in which the flow rates are continuously changed in conjunction with the applied voltage. By optimizing the Row and voltage ramps, improvements can be made in the DMA's measurable size range, counting statistics, resolution, or a partial combination of each of these. Detailed modeling of this technique suggests that errors on the order of 2 to 5% result from incorrect assumptions concerning the flow profile within the DMA. The experimental system enabled accurate control of flows that were varied by an order of magnitude in as little as 30 a. Excellent agreement was obtained between mobility distributions recovered from a voltage ramp, a flow ramp, and a combined voltage and Row ramp. Slight deviations were apparent in the recovered data as the how scan time was reduced from 60 to 30 s. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：1129 / 1144

页数：16

共 18 条

[1]

[Anonymous], LECT NOTES CALCULATI

[2]

Bird R.B., 2006, TRANSPORT PHENOMENA, Vsecond, DOI 10.1002/aic.690070245

[3]

BRINK HM, 1983, J AEROSOL SCI, V14, P589

[4] High resolution size analysis of nanoparticles and ions: Running a Vienna DMA of near optimal length at Reynolds numbers up to 5000 [J].