• Login
    View Item 
    •   Intellectual Repository at Rajamangala University of Technology Lanna
    • Faculty and Institute (คณะ และสถาบัน)
    • College of Integrated Science and Technology
    • Journal Articles
    • View Item
    •   Intellectual Repository at Rajamangala University of Technology Lanna
    • Faculty and Institute (คณะ และสถาบัน)
    • College of Integrated Science and Technology
    • Journal Articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of RepositoryCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    Login

    An Electrical Mobility Spectrometer for Aerosol Size Distribution Measurement

    Thumbnail
    View/Open
    An Electrical Mobility Spectrometer.pdf (583.5Kb)
    Date
    2006
    Author
    Intra, Panich
    Tippayawong, Nakorn
    Metadata
    Show full item record
    Abstract
    Accurate measurements of aerosol size distribution are desirable in order to investigate atmospheric aerosol processes. In the present paper, an electrical mobility spectrometer for measurement of numberweighted particle size distribution in sub-micrometer size range is described. The spectrometer consists of a size selective inlet, an aerosol charger, an electrostatic classifier, a signal detection system, a flow arrangement system and a computer controlled interface system. Particle charging is accomplished by exposing aerosol sample to the cloud of unipolar corona ions, and then charged via ion-particle collisions. The charged aerosol passes into the electrostatic classifier, configured as coaxially cylindrical electrodes. There are two separate streams, aerosol and sheath air flows. The charged aerosols enter the analyzer column. They are then deflected radially outward and collected on electrically isolated electrometer rings, positioned at the inner surface of the outer electrode. Electrometers connected to these electrode rings measure currents corresponding to the number concentration of particles of a given mobility which is related to the particle size. Signal currents are then recorded and processed by a data acquisition system. A prototype of the spectrometer was built and experimentally tested. From preliminary test results, the spectrometer has been found to be promising for determining particle size distribution.
    URI
    http://repository.rmutl.ac.th/handle/123456789/148
    Collections
    • Journal Articles [41]

    DSpace software copyright © 2002-2015  DuraSpace
    Contact Us | Send Feedback | สำนักวิทยบริการและเทคโนโลยีสารสนเทศ | มหาวิทยาลัยเทคโนโลยีราชมงคลล้านนา
    Theme by @mire NV
     

     


    DSpace software copyright © 2002-2015  DuraSpace
    Contact Us | Send Feedback | สำนักวิทยบริการและเทคโนโลยีสารสนเทศ | มหาวิทยาลัยเทคโนโลยีราชมงคลล้านนา
    Theme by @mire NV