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RECORD NUMBER: 24 OF 59

OLS Field Name OLS Field Data
Main Title Five-Stage Cyclone System for in Situ Sampling.
Author Smith, Wallace B. ; Wilson, Jr., Rufus R. ; Harris, D. Bruce ;
CORP Author Southern Research Inst., Birmingham, AL.;Industrial Environmental Research Lab., Research Triangle Park, NC.
Year Published 1979
Report Number EPA-68-02-2131; EPA-600/J-79-116 ; IERL-RTP-P-233
Stock Number PB81-129520
Additional Subjects Cyclone separators ; Air pollution ; Aerosols ; Sampling ; Particles ; Viscosity ; Density(Mass/volume) ; Concentration(Composition) ; Design criteria ; Performance evaluation ;
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB81-129520 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 8p
Abstract The paper describes the development and calibration of a five-stage cyclone system for in situ sampling of process streams. Cyclones may be used to advantage for collecting large samples and in sampling aerosols of high particulate concentration. At 25C, 28.3 L/min, and for a particle density of 1,0 g/cu cm, the D50 cut points of the cyclone system were 5.4, 2.1, 1.4, 0.65, and 0.32 micrometers for cyclones I-V, respectively. Results from calibrating the cyclones at several flow rates, temperatures, and particle densities suggest that the D50 cut points are: (1) proportional to the flow rate of the gas raised to an exponent between -0.63 and -1.11, (2) linearly proportional to the viscosity of the gas, and (3) proportional to the reciprocal of the square root of the particle density. (Copyright (c) 1979 American Chemical Society.)
Supplementary Notes Pub. in Environmental Science and Technology, v13 n11 p1387-1392 Nov 79.
NTIS Title Notes Journal article Apr 76-Jun 77.
PUB Date Free Form c1979
Category Codes 13B; 68A
NTIS Prices PC A02/MF A01
Primary Description 600/13
Document Type NT
Cataloging Source NTIS/MT
Control Number 323790055
Origin NTIS
Type CAT