Focusing particle concentrator with application to ultrafine particles

Hering, Susanne; Lewis, Gregory; Spielman, Steven R.

Title: Focusing particle concentrator with application to ultrafine particles

Patent · Tue Jun 11 00:00:00 EDT 2013

OSTI ID:1176502

Hering, Susanne; Lewis, Gregory; Spielman, Steven R.

Technology is presented for the high efficiency concentration of fine and ultrafine airborne particles into a small fraction of the sampled airflow by condensational enlargement, aerodynamic focusing and flow separation. A nozzle concentrator structure including an acceleration nozzle with a flow extraction structure may be coupled to a containment vessel. The containment vessel may include a water condensation growth tube to facilitate the concentration of ultrafine particles. The containment vessel may further include a separate carrier flow introduced at the center of the sampled flow, upstream of the acceleration nozzle of the nozzle concentrator to facilitate the separation of particle and vapor constituents.

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Research Organization:: Aerosol Dynamics Inc., Berkeley, CA (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: FG02-04ER86179

Assignee:: Aerosol Dynamics Inc. (Berkeley, CA)

Patent Number(s):: 8,459,572

Application Number:: 12/910,705

OSTI ID:: 1176502

Resource Relation:: Patent File Date: 2013 Jun 11

Country of Publication:: United States

Language:: English

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