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The effect of pulsation dampening on the collection efficiency of personal sampling pumps.

Authors
Anderson-DP; Seta-JA; Vining-JF III
Source
NIOSH 1971 Sep:1-15
Link
NIOSHTIC No.
00047934
Abstract
Portable, cyclone-type personal samplers, used to sample respirable dust in coal mines, report significantly lower respirable concentrations than do similar cyclone-filter configurations when operated at steady flow rates. The decrease in respirable concentration is caused by increased cyclone retention which has been related to the degree of velocity fluctuation at the cyclone inlet port. Pulsation dampeners, when added, improve respirable collection efficiency, resulting in performance close to that of uniform flow.
Keywords
NIOSH-Author; Air-quality-control; Dust-control; Coal-dust; Particulate-sampling; Dust-samplers; Personal-protective-equipment; Air-sampling-equipment; Cyclone-separators; Centrifugal-separators;
Publication Date
19710901
Fiscal Year
1971
NTIS Accession No.
PB91-240283
NTIS Price
A03
Source Name
NIOSH, No. TR-70
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