Condensation nucleus counter having vapor stabilization and working fluid recovery
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United States of America Patent
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Feb 16, 1999
Issued Date -
N/A
app pub date -
Jul 7, 1997
filing date -
Aug 12, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
A particle counter of the condensation nucleus type wherein a primary stream of fluent material containing particles enlarged by vapor condensate of a working fluid flow through a viewing volume. A secondary stream of fluent material, termed purge gas, surrounds the primary stream of fluent material as the primary stream traverses the view volume, thereby providing a boundary layer of fluent material, reducing turbulence of the primary stream. The two streams are merged after passing through the view volume and the merged stream is drawn into one or more coalescent filters for conversion of vapor to working fluid which is then recycled for reuse, thereby extending the life of the working fluid and preventing escape of vapor which might contaminate the ambient environment.
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