Effect of pulsation dampening on the collection efficiency of personal sampling pumps. Technical report

Technical Report · Wed Sep 01 00:00:00 EDT 1971

OSTI ID:6031446

Anderson, D P; Seta, J A; Vining, J F

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.

• Research Organization: National Inst. for Occupational Safety and Health, Cincinnati, OH (United States)
• OSTI ID: 6031446
• Report Number(s): PB-91-240283/XAB; TR--70
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
016000* -- Coal
Lignite
& Peat-- Health & Safety
AIR SAMPLERS
COAL MINES
CONCENTRATORS
CYCLONE SEPARATORS
DUST COLLECTORS
DUSTS
EFFICIENCY
EQUIPMENT
INERTIAL SEPARATORS
MINES
PERFORMANCE
POLLUTION CONTROL EQUIPMENT
RELIABILITY
SAMPLERS
SAMPLING
SEPARATION EQUIPMENT
UNDERGROUND FACILITIES