WO2004008110A3 - Method and system for measuring aerosol discharge - Google Patents

Method and system for measuring aerosol discharge Download PDF

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Publication number
WO2004008110A3
WO2004008110A3 PCT/GB2003/002918 GB0302918W WO2004008110A3 WO 2004008110 A3 WO2004008110 A3 WO 2004008110A3 GB 0302918 W GB0302918 W GB 0302918W WO 2004008110 A3 WO2004008110 A3 WO 2004008110A3
Authority
WO
WIPO (PCT)
Prior art keywords
particles
detected
field
charge
velocity
Prior art date
Application number
PCT/GB2003/002918
Other languages
French (fr)
Other versions
WO2004008110A2 (en
WO2004008110A8 (en
Inventor
Wamadeva Balachandran
Janusz Kulon
Original Assignee
Univ Brunel
Wamadeva Balachandran
Janusz Kulon
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Univ Brunel, Wamadeva Balachandran, Janusz Kulon filed Critical Univ Brunel
Priority to AU2003244842A priority Critical patent/AU2003244842A1/en
Publication of WO2004008110A2 publication Critical patent/WO2004008110A2/en
Publication of WO2004008110A3 publication Critical patent/WO2004008110A3/en
Publication of WO2004008110A8 publication Critical patent/WO2004008110A8/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/24—Suction devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
    • G01N2001/222—Other features
    • G01N2001/2223—Other features aerosol sampling devices
    • G01N2015/016—
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/10—Investigating individual particles
    • G01N15/14—Electro-optical investigation, e.g. flow cytometers
    • G01N15/1434—Electro-optical investigation, e.g. flow cytometers using an analyser being characterised by its optical arrangement
    • G01N2015/1447—Spatial selection
    • G01N2015/145—Spatial selection by pattern of light, e.g. fringe pattern
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/10—Investigating individual particles
    • G01N15/14—Electro-optical investigation, e.g. flow cytometers
    • G01N15/1468—Electro-optical investigation, e.g. flow cytometers with spatial resolution of the texture or inner structure of the particle
    • G01N2015/1472—Electro-optical investigation, e.g. flow cytometers with spatial resolution of the texture or inner structure of the particle with colour
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/10—Investigating individual particles
    • G01N15/14—Electro-optical investigation, e.g. flow cytometers
    • G01N2015/1493—Particle size

Abstract

The method and system provide for particles to be detected to be fed to a measurement device in motion. A field is applied to the particles and changes in movement of the particles is detected. Change in movement of the particles is detected by a change in phase of a detection signal. The field is preferably lower that the field required to charge the particles. The preferred technique is designed to measure the magnitude and the polarity of electrostatic charge on an individual particle basis, which is non-invasive, fast and can provide aerosol bipolar charge distribution in real-time, which makes it particularly suitable for measurements of rapidly evolving, unstable aerosols. The preferred method employs Phase Doppler Anemometry (PDA), which extends the capabilities of LDV to simultaneous measurement of velocity, size and charge distribution of the scattering particles. It can provide a high count rate of analysed particles, typically in the range of thousands particles per second. It can also provide the ability to analyse uncharged as well as highly charged particles by traversing the probe volume to map the velocity of the particles within the measurement cell, between the high voltage electrodes.
PCT/GB2003/002918 2002-07-16 2003-07-07 Method and system for measuring aerosol discharge WO2004008110A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003244842A AU2003244842A1 (en) 2002-07-16 2003-07-07 Method and system for measuring aerosol discharge

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0216549.6 2002-07-16
GBGB0216549.6A GB0216549D0 (en) 2002-07-16 2002-07-16 Method and system for measuring aerosol discharge

Publications (3)

Publication Number Publication Date
WO2004008110A2 WO2004008110A2 (en) 2004-01-22
WO2004008110A3 true WO2004008110A3 (en) 2004-03-11
WO2004008110A8 WO2004008110A8 (en) 2004-05-06

Family

ID=9940596

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2003/002918 WO2004008110A2 (en) 2002-07-16 2003-07-07 Method and system for measuring aerosol discharge

Country Status (3)

Country Link
AU (1) AU2003244842A1 (en)
GB (1) GB0216549D0 (en)
WO (1) WO2004008110A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8031339B2 (en) 2007-12-21 2011-10-04 Lawrence Livermore National Security, Llc Particle measurement systems and methods
CN107690412B (en) 2015-04-06 2020-05-05 约翰逊父子公司 Dispensing system
CN105699691B (en) * 2016-03-15 2020-05-15 重庆工商大学 Method for processing instantaneous velocity of suspended particles in LDV oil based on initial velocity of oil
CN106198326B (en) * 2016-07-19 2018-12-28 浙江大学 Particle dispersal device based on negative-pressure adsorption

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4633714A (en) * 1985-08-13 1987-01-06 University Of Arkansas Aerosol particle charge and size analyzer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4633714A (en) * 1985-08-13 1987-01-06 University Of Arkansas Aerosol particle charge and size analyzer

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
FOOT ET AL: "A comparison of two techniques for the measurement of particle size and mobility in an electric field", J. AEROSOL SCI., vol. 31, no. Suppl. 1, 2000, pages S610 - S611, XP002262890 *
JAWOREK A ET AL: "Viscosity effect on ERD spraying using AC superimposed on DC electric field", IEEE-IAS ANNUAL MEETING 2000, vol. 2, 8 October 2000 (2000-10-08) - 12 October 2000 (2000-10-12), Rome, Italy, pages 770 - 776, XP010521403 *
KULON J ET AL: "Simultaneous analysis of particle size and electrostatic charge distribution using phase doppler anemometry", CONFERENCE RECORD OF THE 2002 IEEE INDUSTRY APPLICATIONS CONFERENCE. 37TH IAS ANNUAL MEETING. PITTSBURGH, PA, OCT. 13 - 18, 2002, CONFERENCE RECORD OF THE IEEE INDUSTRY APPLICATIONS CONFERENCE. IAS ANNUAL MEETING, NEW YORK, NY: IEEE, US, vol. 1 OF 4. CONF. 37, 13 October 2002 (2002-10-13), pages 984 - 989, XP010610000, ISBN: 0-7803-7420-7 *
KULON J ET AL: "The bipolar charge aerosol classifier", CONFERENCE RECORD OF THE 2001 IEEE INDUSTRY APPLICATIONS CONFERENCE. 36TH IAS ANNUAL MEETING. CHICAGO, IL, SEPT. 30 - OCT. 4, 2001, CONFERENCE RECORD OF THE IEEE INDUSTRY APPLICATIONS CONFERENCE. IAS ANNUAL MEETING, NEW YORK, NY: IEEE, US, vol. 1 OF 4. CONF. 36, 30 September 2001 (2001-09-30), pages 2241 - 2248, XP010561997, ISBN: 0-7803-7114-3 *
MALAY K MAZUMDER ET AL: "MEASUREMENT OF PARTICLE SIZE AND ELECTROSTATIC CHARGE DISTRIBUTIONS ON TONERS USING E-SPART ANALYZER", IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, IEEE INC. NEW YORK, US, vol. 27, no. 4, 1 July 1991 (1991-07-01), pages 611 - 618, XP000259693, ISSN: 0093-9994 *
SHRIMPTON ET AL: "Size and velocity measurements in an electrostatically produced hydrocarbon spray", FED, LASER ANEMOMETRY ASME 1995, vol. 229, 13 August 1995 (1995-08-13) - 18 August 1995 (1995-08-18), HILTON HEAD, SC, USA, pages 57 - 64, XP009021903 *

Also Published As

Publication number Publication date
WO2004008110A2 (en) 2004-01-22
GB0216549D0 (en) 2002-08-28
WO2004008110A8 (en) 2004-05-06
AU2003244842A1 (en) 2004-02-02

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